Editing Boo

{{FASTAT}}

{{Species-infobox

|title=Boo

|expand=expandable

|image=[[File:BooNSMBWii.PNG|200px]]

|affiliation=[[Koopa Troop]], [[Bowser]], [[King Boo]], [[Lady Bow]], [[Mushroom Kingdom]]

|sub_species=[[Big_Boo|Atomic Boo]]<br>[[Balloon Boo]]<br>[[Big Boo]]<br>[[Big & Little Boo]]<br>[[Black Boo]]<br>[[Blindfold Boo]]<br>[[Bomb Boo]]<br>[[Boo Balloon]]<br>[[Boo Buddy Block]]<br>[[Boo Buddy Snake]]<br>[[Boo Buddy Swarm]]<br>[[Boo Guy]]<br>[[Boo Man Bluff]]<br>[[Broozer]]<br>[[Calm Fishin' Boo]]<br>[[Circling Boo Buddies]]<br>[[Dark Boo]]<br>[[Dark Dark Boo]]<br>[[Disappearing Boo Buddies]]<br>[[Eerie]]<br>[[Fishin' Boo]]<br>[[Ghoul Guy]]<br>[[Green Boo]]<br>[[Li'l Boo]]<br>[[Mad Big Boo]]<br>[[Mad Boo]]<br>[[Mini Boos]]<br>[[Red Boo]]<br>[[Sleepy Boo]]<br>[[Stretch]]<br>[[Terekuribo]]<br>[[The Big Boo]]

|first_appearance=''[[Super Mario Bros. 3]]'' ([[1988]])

|notable=[[Big Boo]]<br>[[Bigger Boo]]<br>[[Boo Mario]]<br>[[Boo Luigi]]<br>[[Boolossus]]<br>[[Bootler]]<br>[[Creepy Steeple Boo]]<br>[[Franky]]<br>[[Herbert]]<br>[[Igor]]<br>[[King Boo]]<br>[[King Boo (Super Mario Sunshine)]]<br>[[Lady Bow]]<br>[[Lahla]]<br>[[Luigi's Mansion Boos]]<br>[[Peeka]]<br>[[Stanley (Boo)|Stanley]]<br>[[Spooky Speedster]]

|latest_appearance=''[[Mario Sports Mix]]'' ([[2010]])

{{Quote|Ghosts... ...don't... ...DIE! Heh, heh, heh! Can you get out of here... ...alive?|Boo|Super Mario 64}}

====''Super Mario Bros. 3====

[[File: SMB3Boo.jpg|thumb|left|A Boo from ''Super Mario Bros. 3''.]]

Boos first appear in ''[[Super Mario Bros. 3]]''. Then, they are referred to as '''Boo Diddleys''', a pun off the late former rock star Bo Diddley. However, future games refer to them only as Boos. The Boo shields its face if [[Mario]] or [[Luigi]] look at it, but it would start to chase Mario or Luigi if they look away. Boos are unable to defeat, unless the two are equip with a Hammer Bro. Suit, Koopa shell, or [[Starman]]. The game also has [[Stretch|Stretches]], which are Boos with very long bodies that live in the Fortresses throughout the kingdom.

====''Super Mario World====

[[File:SMWBoo.png|frame|right]]

In ''[[Super Mario World]]'', there are [[Ghost House]]s, which contain many Boos. These Boos retain their usual pattern of attack from ''Super Mario Bros. 3'' and sometimes make faces at Mario or Luigi. This game also introduces many new sub-species of Boo, the [[Boo Buddy Block]], [[Boo Buddy Snake]], [[Boo Buddy Swarm]], [[Circling Boo Buddies]], and [[Disappearing Boo Buddies]]. It also introduces a giant version of the Boo, the [[Big Boo]], and a ghost-like [[Lakitu]] called a [[Fishin' Boo]].

====''Super Mario 64====

[[File:Boo 64.png|thumb|120px|left|A Boo in ''Super Mario 64''.]]

Boos make a starring appearance in the level, [[Big Boo's Haunt]], in ''[[Super Mario 64]]''. A group of Boos can be found in the Castle Gardens (holding [[Red Coin]]s in the ''DS'' version). After collecting twelve Power Stars, Mario is able to enter Big Boo's Haunt by going into the little cage a certain Boo drops. A portal to this course is hidden inside a Big Boo. After Mario attacks it once, a small cage falls out of the Boo, and Mario can jump inside of it. He also battles Big Boo three times here. Additionally, when the Boos look at Mario, they attempt to hide by becoming partially invisible. In the invisible Boo; the player can see a [[Coin]] or a [[Blue Coin]] as this was an add-on to the Boos' physics. To defeat them, a punch or kick from behind is needed. Unfortunately for them, Mario can also defeat them with a ground pound. They can also be defeated by an explosion.

====''Super Mario Bros. Deluxe====

[[File:You_vs._Boo.PNG|frame|The Boos from ''Super Mario Bros. Deluxe'', arranged by speed.]]

While Boos did not appear in the original ''[[Super Mario Bros.]]'', Boos appear in ''[[Super Mario Bros. Deluxe]]'' as the main enemy in the "You VS. Boo" mode. The goal is to reach the flagpole before the Boo. After defeating Boo a certain amount of times, he flies away and a [[Green Boo]] replaces him; after that Boo is defeated, a [[Red Boo]] takes its place, and finally, a Black Boo with a yellow outline appears. Each new Boo is faster than the one before it, meaning the plain White Boo is the slowest while the so-called "Legendary Black Boo" is the fastest and hardest to defeat.

====''Super Mario Sunshine====

[[File:booshine.jpeg|thumb|left|A Boo from ''[[Super Mario Sunshine]]''.]]

Boos return in ''[[Super Mario Sunshine]]'' terrorizing the residents of [[Hotel Delfino]]. In this game, they could be stunned by [[F.L.U.D.D.]], and defeated by being jumped on. They also disguise themselves as [[coins]]. It turns out that Hotel Delfino has mysteries, including flipping floor tiles, a magic painting, and a flipping bookcase. Mario treks through the hotel, solving its mysteries. Eventually, he finds [[King Boo (Super Mario Sunshine)|King Boo]] in the basement of the Casino, and Mario has to battle him. He can defeat him by throwing a Chili at him, and then throwing another piece of fruit at him. Mario has to do this three times before King Boo is defeated. Boos can also disguise themselves as [[Shadow Mario]], while the real Shadow Mario runs from Mario. Boo's appearance had just one change, which is blue circles surrounding their black pupils. Red Boos also appear and can be turned into a platform if sprayed by [[F.L.U.D.D.]].

====''Super Mario 64 DS====

[[File:Big Boo Battle.png|thumb|175px|Boos coming at [[Mario]].]]

In ''[[Super Mario 64 DS]]'', Boos keep the same role they did in ''Super Mario 64''. However, Mario can find a Luigi Painting, which will take him to the [[Big Boo Battle]] level on the Balcony. After reaching the end, by following the cackle of [[King Boo]], he makes it to a room with a mirror at the end of it. He then has to battle King Boo. However, King Boo is invisible and the only way for Mario to see him is by looking in the mirror, making it harder to hit him. After hitting him three times, Mario gains the key to the room where [[Luigi]] is trapped in, and proceeds to free Luigi. In the English version of the game, King Boo is erroneously referred to as "Big Boo." Yoshi cannot defeat them in this game. Ground Pounding yields no results, and eating them simply causes Yoshi to spit them back out. Fortunately, the mustached plumbers can hit Boos with ground-pounds.

====''New Super Mario Bros.====

[[File:Booboo.gif|frame|left]]

Boos also appear in ''[[New Super Mario Bros.]]''. They are found mainly in Ghost Houses, scattered throughout the game as well as World 8-1. They appear like they usually do, shy. The game also introduces the [[Balloon Boo]], which are normal Boos who could suck up the air, and become much bigger. [[Broozer]], the boxing ghost, first appears in this game as well. An icon of a Boo covers the lower screen in Ghost Houses.

====''Super Mario Galaxy====  

[[File:Mario_Seek.png|thumb|200px|Mario looking at a Boo in ''Super Mario Galaxy''.]]

Boos make an appearance in ''[[Super Mario Galaxy]]'' and can be found in the [[Ghostly Galaxy]], the [[Bigmouth Galaxy]], the [[Deep Dark Galaxy]], and the [[Sand Spiral Galaxy]]. Boos act the same way that they did in previous games, such as hiding by turning transparent when Mario looks at them and then following Mario when he looks away. Boos can only be defeated when they are brought under a ray of light (including the Toad Brigade captain's helmet and the light emitted from shells while in the water), and they cannot be defeated by Mario's spin or jump attack. However the spin attack can throw a Boo around Mario, knocking it off course temporarily or into a light. If a Boo hits Mario while he is in the Boo Suit, Mario loses the suit, but does not lose any health. Boos can also be found underwater in the [[Bigmouth Galaxy]] in this game. While underwater, Boos attack just by swimming back and forth, similar to [[Cheep-Cheep]]s, and damage Mario if they touch him. These Boos could be defeated only by pointing at them with the light of the [[Golden Shell]] and would rapidly multiply after a while. Also, a Boo named, [[Spooky Speedster]], is found in two areas of the game. Mario must race him to win a [[Power Star]]. This game also introduces a new kind of Boo, called the [[Bomb Boo]], it is similar to a normal Boo, but is black with yellow eyes and can be grabbed by its tongue if Mario uses his spin attack on it. Spinning again will hammer-toss it into statues and enemies upon which it will blow up on impact destroying the statues and damaging enemies. However, if Mario holds onto the Bomb Boo too long, it will blow up and Mario will take damage.

[[File:3-Ghost_Housensmbwii.PNG|200px|thumb|left|A Boo chasing Mario in ''New Super Mario Bros. Wii''.]]

Boos reappear in ''[[New Super Mario Bros. Wii]]'' in various ghost houses that have appeared in ''[[Super Mario World]]'' throughout the game. They behave the same way as they did in ''New Super Mario Bros'' and, just like before, they are invincible, unless the player has a [[Star]] power-up. [[Big Boo]]s also reappear along with [[Broozer]]s. [[Circling Boo Buddies]] can also be found in a small amount of ghost houses in the game. Despite their concept art, they appear with a blue glow as opposed to plain white in this game, giving off a more spectral appearance. In the map, a single Boo will be watching Mario, and will taunt Mario as he enters. If Mario gets tossed out, the Boo will laugh. However, once the level is beaten, the Boo will cover its face for the rest of the game.<br clear=all>

====''Super Mario Galaxy 2====

[[File:Mg10.jpg|thumb|Boos alongside a [[Big Boo]] in the [[Haunty Halls Galaxy]] in ''Super Mario Galaxy 2''.]]

Boos reappear in the game ''[[Super Mario Galaxy 2]]''. They behave the same way they did in its predecessor. They are found in haunted levels such as [[Haunty Halls Galaxy]] and [[Boo Moon Galaxy]]. The underwater Boos from the prequel also appear in this game, in the [[Battle Belt Galaxy]] and [[Slimy Spring Galaxy]].

====''Super Mario 3D''====

[[File:3DS_SuperMario_10_scrn10_E3.png|thumb|left|A Boo chasing [[Fire Mario]].]]

Boos are scheduled to appear in the [[Nintendo 3DS]] game, ''[[Super Mario 3D]]''. They will appear as enemies, alongside many others, such as [[Cheep Cheep]], [[Bullet Bill]], and more. In the game, they will retain their normal battle strategy, which is chasing [[Mario]] when he looks away while sticking its tongue out.

===''The Adventures of Super Mario Bros. 3===

[[File:CartoonBoo.jpg|thumb|left|A Boo in ''[[The Adventures of Super Mario Bros. 3]]''.]]

Boos made infrequent appearances in ''[[The Adventures of Super Mario Bros. 3]]'' television series, which depicted them as having a somewhat more menacing appearance. Like in the game the show was based on, Boos worked for Bowser and often aided him in causing trouble. An example of this is seen in the episode "[[Reign Storm]]", in which Bowser has several Boos terrorize the new Mushroom Shopping Mall. In this episode they were referred to as 'Boodidlies' which was their original name before it became Boo.

===''Super Mario World'' television series===

[[File:aboo.jpg|thumb|A Boo in the ''Super Mario World'' television series.]]

In ''[[Super Mario World (television series)|Super Mario World]]'', Boos, who were completely redesigned, appear in the episodes "[[Ghosts 'R' Us]]", in which a gang of Boos, as well as a Big Boo, appear to chase [[Yoshi]] through [[Wizardheimer's Haunted House]], "[[The Night Before Cave Christmas]]", and when Yoshi sees one and he runs off screaming, and "[[The Yoshi Shuffle]]" in where several boos appeared in the audience during the episode. They are referred to as Ghosts.

===''Super Mario Adventures===

In ''[[Super Mario Adventures]]'', a horde of Boos appear to attack Mario and Luigi when they are tricked into a haunted house by Bowser and the Koopalings. Mario and Luigi become trapped by the Boos and a Big Boo, who are held at bay by the bros staring at them in the face. Eventually, nearing exhaustion, Mario races to a nearby room, dragging Luigi while being chased by the Boos. Upon barging into this room, the Boos and Big Boo find Mario [[Dr. Mario (character)|dressed as a psychiatrist]] with Luigi as his nurse. After some talking, Mario and Luigi manage to reform the Boos and the Big Boo, while learning they were bullied in their youth and that is why they act so nasty to everyone. These Boos and their Big Boo leader were last seen happily waving goodbye to Mario, Luigi and Yoshi as they left the haunted house, which the Boos led them out of. Boos also make an appearance at Peach's wedding.

===''Super Mario-Kun''===

[[File:SMK25.jpg|thumb|left|Lady Boo as seen on the cover of ''Super Mario-Kun'' issue 25.]]

Boos make appearances in some of the ''[[Super Mario-Kun]]'' comics. A Boo appears on the cover of the sixteenth issue. This issue is based on ''[[Super Mario 64]]''. Alongside it, [[Eyerok]], a [[Bob-omb]], and [[Bowser]] can be seen. Throughout the comic, they appear, too. Their role in the comic is similar to their role in the game. [[Lady Boo]], a notable boo, appears in a couple of the ''[[Paper Mario]]'' based issues. These issues are 25 and 27. Lady Boo appears on the cover of the twenty-fifth issue along with  many of [[Mario]]'s other partners, including [[Goombario]], [[Kooper]], [[Eldstar]], and [[Twink]]. Besides appearing on the cover, she appears throughout the comic. Her role in the comic mimics her role in the game. Lady Boo reappears on the cover of the twenty-seventh issue and in the comic. Like in issue 25, Lady Boo's role in the comic is similar to her appearance in the game. In a ''[[Super Mario Galaxy]]'' based issue, [[Boo Mario]] appears on the cover along with more of Mario's transformations.

===''Mario and the Incredible Rescue''===

[[File:MarioAndIncredibleRescue.jpg|thumb|right|Two Boos on the cover of ''Mario and the Incredible Rescue''.]]

Boos makes an appearance in the chapter book, ''[[Mario and the Incredible Rescue]]''. The cover features two Boos. One of the Boos is from ''[[Mario Kart: Super Circuit]]'' and the other is a mirrored Boo from ''[[Luigi's Mansion]]''. They are known as "ghosts" in the book. Boos capture [[Princess Peach]] and take her to [[Bowser's Castle]]. Mario also sees a vision of Princess Peach  being caged and surrounded by six Boos. Boos are eventually defeated by Mario at the end of the book. To defeat them, Mario casts a spell on them and sends them flying out of the castle.

Boos made their first appearance in the ''[[Mario Kart (series)|Mario Kart]]'' series, in ''[[Super Mario Kart]]''. Though not as obstacles, they only appear in three race courses. These courses are [[Ghost Valley 1]], [[Ghost Valley 2]], and [[Ghost Valley 3]]. In each race, they just laugh when the player drives by.

Boos are used as an item, in ''[[Mario Kart 64]]''. When activated, the Boo selects a racer with the best item in reach, and steals the item and gives it to the player that released it. At the same time, the player turns invisible and therefore is completely invulnerable for a short period of time. While invisible, the player can pass the other racers more easily by simply going through them. If no other players have any items, the Boo will return empty handed. Boos also appear in the course [[Banshee Boardwalk]].

[[File:MKSCBoo.jpg|thumb|right|A Boo from ''Mario Kart: Super Circuit''.]]

[[File:BrokenPier.png|thumb|left|Boos attacking [[Toad]] in Broken Pier.]]

Boos appear as items, again, in ''[[Mario Kart: Super Circuit]]''. When activated, they can also slow down the leading racer. Boos also appear in two new courses, [[Boo Lake]] and [[Broken Pier]]. In Boo Lake, Boos hold candles which guide the player through the track. In Broken Pier, they attack the players and take their [[Coin|coins]]. Ghost Valley 1, Ghost Valley 2, and Ghost Valley 3 also reappear with Boos in it.

====''Mario Kart Arcade GP''====

Boos appear as items in the arcade game, ''[[Mario Kart Arcade GP]]''. A Boo appears as a basic item. It causes whoever is hit by it to slow down temporarily. There is also a new item called the '''Triple Boo'''.  

In ''[[Mario Kart DS]]'', Boos reappear as items. The only difference is, they do not slow down the leading racer. Also, using the Boo won't affect off-road racing, so various shortcuts can be made. Some pictures of Boos from the game, ''[[Luigi's Mansion]]'', appear in the [[Luigi's Mansion (place)#Mario Kart DS|Luigi's Mansion]] race course. [[Banshee Boardwalk]] reappears as a race, but this time, Boos appear in it. They do not do anything that effects the racers, they just laugh when a racer drives by.

 

Boos reappear in the arcade game, ''[[Mario Kart Arcade GP 2]]''. Like what they do in ''Mario Kart Arcade GP'', they slow down the leading racer. Though, the '''Triple Boos''' do not appear in this game, even though it appears in the prequel.

[[File:GhostValleyWii.jpg|thumb|right|Boos from the race, Ghost Valley 2 in ''Mario Kart Wii''.]]

Boos do not appear as items in ''[[Mario Kart Wii]]'', but [[King Boo]] appears as a playable character. However, Boos do appear in a returning race, Ghost Valley 2. Like their original appearance in the track, Boos only laugh when racers drive by, but they eventually disappear.

===''Mario Baseball'' series===

[[File:Mini Boos.PNG|thumb|left|[[Mini Boos]] being used in ''Mario Super Sluggers''.]]

Boo makes its first baseball appearance in ''[[Mario Superstar Baseball]]''. It is on Wario's team as a starter. Boo has the highest ranked pitch in the game, along with Waluigi and Peach. Its special running and fielding move is a [[Super Jump]]. The only worse fielder in the game is [[Bowser]]. Boo make another appearance in ''[[Mario Super Sluggers]]''. It is on Wario's team once again and it can be unlocked in Wario City by finding it in between boxes and completing its challenge. Like its predecessor, Boo has the highest ranked pitch in the game along with Peach (9/10) and averages other moves. Also, a new item, called Mini Boos, appear. When activated, Mini Boos turn the ball invisible for a short period of time.

===''Super Mario Land'' series===

====''Super Mario Land 2: 6 Golden Coins====

[[File:Boosprite.PNG|frame|left]]

Boos appear in ''[[Super Mario Land 2: 6 Golden Coins]]''. These Boos are relatively unchanged from the previous Boos. Boos in this game are found in the [[Pumpkin Zone]]. A thrown [[Green Shell]] can defeat it. A new sub-species named [[Terekuribo]]s, which are a species of undead Goombas, also appears in this game.

Boos also appear in the game ''[[Hotel Mario]]'', though exclusively under the name of '''Boo Buddies'''. There are two types of Boos in this game. One type stays visible and does not hurt Mario until transparency is achieved, at which they can harm the heroic plumber. The other type of Boo uses the traditional attack method and turns invisible when looked at, and attacks Mario when his back is turned.

===''Yakuman DS''===

[[File:YakumanDS CharacterSelection.jpg|thumb|right|Boos on the character selection screen in ''Yakuman DS''.]]

Boos appear in the Japan-only [[Nintendo DS]] game, [[Yakuman DS]]. They are one of the many opponents. Other opponents include, [[Goomba]], [[Diddy Kong]], and [[Hammer Bro.]]. Boos are not unlockable or playable. They are opponents from the start of the game.

===''Tetris DS''===

Boos also appear in the [[Nintendo DS]] game, [[Tetris DS]]. They are one of the few multiplayer items. Other items include, [[Mushroom]]s and [[Lightning]]. Boos are able to block the opponents sight of the upcoming block, making it harder for the opposing player to see the upcoming block. They do not appear in single player.

===''Yoshi'' series===

====''Yoshi''====

[[File:BooY.jpg|thumb|left|100px|A Boo from ''Yoshi''.]]

Boos make an appearance in ''[[Yoshi (game)|Yoshi'']]. They are enemies in the A Type part of the game, as well as the B Type. Boos are not main enemies in the game, as they simply make appearances throughout some parts of the game. Boo's sprite in the game is similar to its sprite from ''[[Super Mario Bros. 3]]''. Many of the other enemies' sprites also are similar to their sprites from ''Super Mario Bros. 3''.

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====''Yoshi's Cookie''====

In ''[[Yoshi's Cookie]]'', Boos return as enemies to [[Yoshi]]. Though in this game, they are depicted as one of Yoshi's "opponents". They are among the easy opponents, the others being [[Goomba]], [[Cheep Cheep]], [[Koopa Paratroopa|Paratroopa]], and [[Spiny]]. Two sub-species of Boo, [[Eerie]] and [[Fishin' Boo]] appear, too.  

====''Yoshi's Safari''====

[[File:YoshiSafariBoo65.png|thumb|left|A Boo from ''Yoshi's Safari''.]]

In ''[[Yoshi's Safari]]'', Boos appear as enemies. They first and only appearance throughout the game is  in the [[Ghost House#Yoshi's Safari|Ghost Mansion]], a level in the [[Dark Realm]]. A [[Big Boo]] serves as the boss for the level. Just like any other enemy in the game, [[Yoshi]] must shoot the Boos with his [[Super Scope]].

====''Super Mario World 2: Yoshi's Island====

[[File:YIBoo.png|frame|right]]

Boos first appear chronologically as antagonists to [[Yoshi]] in ''[[Super Mario World 2: Yoshi's Island]]''. They are first seen in World 2, which featur numerous ghastly creatures. They are underlings for [[Kamek]], the head of the [[Magikoopa|Magikoopas]], who turns one Boo into [[Bigger Boo]], which grows in size every time he is hit by an egg. It serves as a minor boss. The main boss of World 2 is also a Boo-like creature, [[Roger the Potted Ghost]], who is a normal flower pot, until Kamek makes him giant, and transforms it into a living creature. The game also features the [[Boo Blah]], a spectacle Boo exclusive to this game. The only way to defeat Boos is by looking away and then make a egg bounce off a wall after it is thrown, hitting the ghost in the face.

====''Yoshi's Story====

[[File:Bigboo.gif|frame|A Boo in ''Yoshi's Story''.]]

Boos appear in ''[[Yoshi's Story]]'' in Stage 6-3: [[Ghost Castle]]. They do not act differently, although they are slightly bigger. In this game, the normal Boo is called a Big Boo, despite not being an actual Big Boo. The Ghost Castle is also home to other Boo species: namely, the [[Boo Block]], [[Blindfold Boo]], and others. The stage, Yoshi Sewers, also has ghost platforms, along with a blue boo variant called a [[Boo Buddy]].

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====''Yoshi's Universal Gravitation====

Boos appear again in ''[[Yoshi's Universal Gravitation]]'' however in this game they are very rare enemies. In fact, there are only four missions that they appear in. They follow the same tactics as normal. In this game, they are in 3-D, and use their normal laugh that is used in previous games.

====''Yoshi's Island DS====

[[File:Boo Island DS.jpg|thumb|left|100px|Two Boos from ''Yoshi's Island DS''.]]

Yoshi comes into contact with Boos, again, in ''[[Yoshi's Island DS]]''. Here, they are commonly found in castles, along with other ghastly creatures. Again, they work for Kamek. They attack the same as all Boos before, but like in ''Super Mario World 2: Yoshi's Island'', they can only be defeated if Yoshi looks away. So Yoshi must bounce an egg off of the wall into their face to defeat them. A Boo-like mid-boss, named [[Hector the Reflector]] appears as well. The Boos' laughs are used in many games before. It is used for the boss [[Six-Face Sal]], and even [[Baby Bowser]].

===''Super Mario RPG: Legend of the Seven Stars===

|image=[[File:Bigboo_SMRPG.gif|150px]]

|name=The Big Boo (Teresa)

|location=Kero Sewers

|mgdefense=24

|attacks=[[Scream]], [[Lightning Orb]], [[Bolt]]

|strengths=Fire, Jump

|itemdropped=[[Pure Water]], [[Honey Syrup]]

|expgained=2

|psychopath=Stop staring at me!

}}

Boos return during the events of ''[[Super Mario RPG: Legend of the Seven Stars]]''. The English translation erroneously calls them "The Big Boo". In the japanese version in fact they are just called Teresa. These Boos, like other Boos that appear in previous games, hide behind their arms when stared at. However, some of The Big Boos teleport around the room, attempting to scare Mario and his friends. The Big Boos live in [[Kero Sewers]] along with many other ghouls, including [[Hobgoblin]]s and [[Shadows]]. Often, these three undead monsters will assist each other in battle. Strangely enough, Big Boos have no physical defense, making them extremely weak enemies (even a [[Goomba]] has three defense points). However, The Big Boos make up for their lack of defense with high evasion, meaning that most attacks against a The Big Boo will miss. In battle, The Big Boos command powerful lighting magic, including the attacks [[Lightning Orb]] and [[Bolt]]. The Big Boos also know the special attack [[Scream]], which cuts a party member's attack and defense in half. When not using magic, a The Big Boo will approach one of Mario's party members and make a face, damaging that character. In this game there is also a stronger Boo variation called [[Li'l Boo]]s, which are the same size as normal Boos but have blue tongues, similar to the first appearance of [[King Boo]]. The only true appearance of a Big Boo in this game is the one used in [[Bowser]]'s [[Terrorize]] attack <ref>As named in the ''Super Mario RPG: Legend of the Seven Stars'' manual.</ref>.

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[[File:CrazyCutter.png|thumb|left|[[Mario]], [[Luigi]], [[Peach]], and [[Donkey Kong]] cutting out a Boo.]]

Boos make minor appearances in ''[[Mario Party]]''. Their voices can be mimicked by one of the items: the [[Talking Parrot]]. Boos also appear in each of the game's board maps, excluding [[Peach's Birthday Cake]]. On the boards, they steal coins or stars from opponents, and they are willing to steal a few coins for free from any player, although they ask for coins to steal a star. Additionally, after the Luigi's Engine Room board is completed, a Boo, [[Koopa]], and a [[Toad]], along with the two runner-ups, surround the victor and congratulate them. Boos also appear as one of the shapes the player can cut in the minigame, [[Crazy Cutter]].

Boos make several appearances in ''[[Mario Party 2]]''. In it, they steal coins or stars as they did in the first game. Additionally, an item called the [[Boo Bell]] appears. When a player obtains it, they can ring for a Boo to come. The Boo that comes to the player's side is asked to steal coins or stars, depending on how much the player can afford. If the Boo is sent to steal coins from an opponent, the opponent can fight it off by pressing the A button quickly. Additionally, the Boo can only steal a maximum of 30 coins or a maximum of one star.

 

A Boo also appears in the battle minigame, [[Day at the Races]], along with the others racers, [[Whomp]], [[Thwomp]], and [[Bob-omb]]. The Boo can disappear and then reappear in a further spot on the racetrack. However, it gets its face stuck in the ground sometimes, causing it to stop for a short period of time.

[[File:BooIcon MP3.png|right|thumb|Boo from ''Mario Party 3''.]]

Boos also appear in ''[[Mario Party 3]]''. Like in their previous appearances, they are not major characters in the game. They are among the Duel Partners in the [[Mario Party 3#Duel Mode Partners|Duel Mode Partners]]. Its partner is [[Yoshi]] and it is able to counterattack the attacker's move for equal damage. Boos appear in the unlockable party board, [[Waluigi's Island]]. Whenever a player runs into a Boo, it will show them to two paths. One of the paths are rigged. If the player chooses the rigged path, they will be summoned back to the start. If they choose the correct path, they will continue on the board. Boos appear on all of the other boards, [[Chilly Waters]], [[Deep Bloober Sea]], [[Spiny Desert]], [[Woody Woods]], and [[Creepy Cavern]]. On the board map, a picture of them can be seen next to a grave. Boos try to steal the player's  [[Coin|coins]] or [[Star|stars]]. They also return with the Boo Bell.

[[File: Booparty4.jpg|thumb|175px|left|The Sorcerer Boo from ''Mario Party 4''.]]

In ''[[Mario Party 4]]'', a Boo plays a major role as the host for [[Boo's Haunted Bash]]. This Boo has a whole new look with a wizard's cape. Like the other hosts in the game, it is the character to reward to player with a star. Multiple Boos also appear on this board as background characters. One controls the Item Shop. Another one owns the [[Mystery Train]], but it only gives out rides to the Boneyard if a [[Red Boo]] is not in its presence. Two other Boos own the Boo House, allowing players to steal stars and coins from their opponents. [[Boo's Crystal Ball]] has the same effect as the Boo house. Two sidegames involving Boos requires a [[Mini Mushroom]]. One of them has the player pressing one of the keys of the Horn of Penalty to get one of three randomly chosen items. The second one has the character on a piano. They have to press the correct key at the right time until the end of the sidegame to get a certain amount of coins. A question mark space activates a Boo clock. If three people land on them, Big Boo will appear. Big Boo is basically an upgraded version of the Boo House; he targets all players instead of one. Boo is also the fourth host of the Reversal of Fortune, who oversees what is given. Also, a Boo is an unlockable, playable character in the stage, [[Beach Volley Folley]]. They also appear on all of the other boards, [[Toad's Midway Madness]], [[Koopa's Seaside Soiree]], [[Goomba's Greedy Gala]], [[Shy Guy's Jungle Jam]], and [[Bowser's Gnarly Party]]. On theses boards, the player can go to them to steal coins or stars from the other players.  

[[File:MP5Boo.PNG|thumb|right|125px|Boo from ''Mario Party 5''.]]

''[[Mario Party 5]]'' marks the first game in the ''Mario Party'' series where a Boo is a playable character in Party Mode. It is one of the unlockable characters, the others being [[Koopa Kid]] and [[Toad]]. Boo's partner in the game is [[Koopa Kid]]. Since Boo is playable, it does not make any major background appearances.

[[File:MP6 Boo.jpg|thumb|left|Boo, along with some Red Boos, form ''Mario Party 6''.]]

A Boo reappears as playable character in ''[[Mario Party 6]]''. In this game, it is a default character. In the game, there is also an orb called [[Boo Away Orb]], which protects the player from a [[Red Boo]]. Red Boos also appear in the minigame [[Boo'd Off the Stage]]. Red Boos also appear two boards, [[Towering Treetop]] and [[Castaway Bay]]. This game also marks the third appearance of Red Boos in the ''Mario Party'' series.

[[File:DB and Boo.JPG|thumb|150px|Boo and Dry Bones from ''Mario Party 7''.]]

''[[Mario Party 7]]'' marks the third ''Mario Party'' game where Boo is playable. It also marks [[Dry Bones]]'s first playable appearance, who is Boo's partner throughout the game. Red Boos appear in the game, too. Red Boos appear in a few minigames such as [[Ghost in the Hall]]. In this minigame, Red Boos try to scare the players. Oddly, the Red Boos also try to scare Boo, if Boo is one of the characters.

''[[Mario Party 8]]'', marks the latest game where Boo is a playable character in the ''Mario Party'' series. Boo's partner is Dry Bones, again. Red Boos appear in some minigames such as [[Boo-ting Gallery]]. ''Mario Party 8'' also marks the first appearance of [[King Boo]], who is the board host of [[King Boo's Haunted Hideaway]]. In this board, Boos appear in the background. One of them owns an Item Shop.

 

[[File:MPDS Peek-a-Boo.jpg|thumb|left|Boos from the minigame, Peek-a-Boo, in ''Mario Party DS''.]]

Boo is not a playable character in ''[[Mario Party DS]]'' and plays no part in board play, but appears as an unlockable figure. They also appear in the mini-games [[Boo Tag]], and [[Peek-a-Boo]]. In Boo Tag, a Boo tags a player. The tagged player must try to get rid of the Boo by running into another player. The player that spent the least time with the Boo wins. In Peek-a-Boo, the players must find the wanted Boo. A lot of different Boos appear in outfits, such as hats.

====''Mario Tennis (Nintendo 64)''====

[[File:Mt64boo.png|thumb|150px|right|Boo from ''Mario Tennis''.]]

A Boo appears in ''[[Mario Tennis (Nintendo 64)|Mario Tennis]]'' for the [[Nintendo 64]]. It is classified as a tricky character. The only other tricky character is [[Paratroopa]]. It is also a default character. Most of the playable characters have courts named after them. However, Boo does not have its own court.

====''Mario Tennis (Game Boy Color)''====

[[File:Mario Tennis GBC.PNG|thumb|left|Boo and Daisy's cameo appearance.]]

A Boo makes a cameo appearance in ''[[Mario Tennis (Game Boy Color)|Mario Tennis]]'' for the [[Game Boy Color]]. [[Princess Daisy]] and [[Toad]] also make cameo appearances. They can be seen in the audience at [[Peach's Castle]].

====''Mario Power Tennis''====

[[File:MPTBoo.PNG|thumb|200px|left|Boo from ''Mario Power Tennis''.]]

Boo also appears in ''[[Mario Power Tennis (GameCube)|Mario Power Tennis]]'' where it is a playable character. When it wins a championship, Mario and Luigi would come out with the trophy and Boo would be missing. They look around and then the trophy would start to float. Boo then appear unders it and Mario and Luigi are relieved. Then they start floating and the air is  full of Boos who start flying around. Then the main Boo flies up to the screen and holds the trophy. Boo's taunt is to wave its racket while laughing. Boo's offensive power shot is the [[Boo Blast]] and its defensive power shot is the [[Boo Brigade Return]].

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[[File:Boomgtt.png|thumb|right|180px|Boo from ''Mario Golf: Toadstool Tour.'']]

A Boo makes a couple of appearances in the ''[[Mario Golf (series)|Mario Golf]]'' series. It first appears in ''[[Mario Golf (Nintendo 64)|Mario Golf]]'' for the [[Nintendo 64]]. Boo is one Mario's Power Star Holes for Hole 2. Also, Boos appear in one of the courses, [[Boo Valley]]. Boo is one of the unlockable characters in ''[[Mario Golf: Toadstool Tour]]'', the others being [[Bowser Jr.]], [[Shadow Mario]], and [[Petey Piranha]]. Boos also appear in one of the courses, [[Bowser Badlands]].

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====''Mario Strikers Charged Football''====

[[File:Boo MSC.jpg|thumb|left|Boo from ''Mario Strikers Charged Football''.]]

However Boos do not appear in ''[[Mario Smash Football]]'', the do appear in its sequel, ''[[Mario Strikers Charged Football]]''. Boos, along with [[Hammer Bros.]], [[Toad (species)|Toads]], [[Koopa Troopa]]s, [[Birdo (species)|Birdos]], [[Dry Bones]], [[Monty Mole]]s, and [[Shy Guys]], are sidekicks to the many captains. They appear with a helmet with the logo of their team captain. Boos are classified as a playmaker. The only other playmaker are Toads. Their skillshot is [[Possess]]. The given description of the Boos is: "''This ghost can fly up and down the sidelines with great speed, using precise and accurate passing to lead his team to victory. His long-distance shots are quite weak though and his hits are not very powerful. If Boo gets a chance, he can Possess the ball and score at will.''"

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====''Paper Mario====

[[File:PMBoo.png|frame]]

The [[Boo's Mansion]] in ''[[Paper Mario]]'' for the Nintendo 64 is a bigger version of the SNES ''Super Mario World'' Ghost Houses, which has many puzzles involving Boos in it. The only difference, is that these Boos are kind, but tricky Boos. After solving these puzzles, [[Lady Bow]], the princess of the Boos, joins Mario's party, in order to destroy [[Tubba Blubba]], who has been terrorizing the native Boos, by having them as a snack. One certain Boo he eats is [[Stanley (Boo)|Stanley]]. Mario helps Lady Bow in order to get the [[Star Spirit]] she has in her possession. In ''[[Paper Mario: The Thousand-Year Door]]'', Bow and [[Bootler]] are seen on vacation in [[Poshley Heights]] after Mario and his teammates defeat the [[Shadow Queen]].

====''Paper Mario: The Thousand-Year Door====

|PM2=yes

|image=[[File:PM2_Boo.PNG]]

|hp=7

|atk=3

|def=0

|location=Creepy Steeple, Pit of 100 Trials (Levels 31-40)

|log=A somewhat shy ghost that can make itself or its allies invisible. It may be a ghost, but its pretty cute.

|items=[[Mini Mr. Mini]], [[Fire Flower]], [[Dizzy Dial]], [[Slow Shroom]]

|moves=Scare (3), Hide (Invisible), Power Transfer (Invisible), Air Boos (causes all Boos in battle to move high in the air)

|tattle=That's a Boo. It's everyone's favorite ghost. ...Well, most everyone... It's nothing to write home about on the Attack side, but it can turn invisible. If it turns invisible, we won't be able to hit it, so beat it while you can see it. Boos are kinda cute, but I sure wouldn't want to meet one in a dark alley. If I ran into one in the bathroom in the middle of the night, I'd... Well, never you mind what I'd do.

|before=[[Poison Puff|70]]

|after=[[Big_Boo#Paper_Mario:_The_Thousand-Year_Door|72]]

In the GameCube game ''[[Paper Mario: The Thousand-Year Door]]'', the Boos live in a tower called [[Creepy Steeple]]. When Mario first enters the steeple there is only one Boo in the room who says that he misses his friends. He will let Mario through one door (Blocking him from using any other doors), where he finds a chest. When he opens it, 200 Boos fly out. The last Boo asks Mario "How many Boos came out of that chest?" If Mario answers correctly the Boo will give him an [[Ultra Shroom]]. If Mario is wrong the Boo will give him one [[Coin]]. Upon returning the main room, the first Boo is still there. He asks if Mario is going to be mean to him. If Mario answers "No", a bunch of Boos (The same ones from the treasure chest) will start flying around the main room, attempting to swarm Mario. If successful, they will throw Mario out of the Steeple, exactly like the [[Sentinel]]s in [[Tubba Blubba's Castle]]. If Mario Spin Attacks them several times, they merge into the [[Big_Boo#Paper_Mario:_The_Thousand-Year_Door|Atomic Boo]]. Once the Atomic Boo is defeated, Mario can fight Boos in other parts of the Steeple. Strangely enough, the original Creepy Steeple Boo sends a letter to Mario that thanks him for freeing his friends, despite the fact that he and his friends attacked him. He signs the letter "[[Creepy Steeple Boo|The Creepy Steeple Boo]]". More Boos can be found in the Pit of 100 Trials. The game also introduced a more powerful sub-species, the [[Dark Boo]] which can be found in [[Poshley Sanctum]].

====''Super Paper Mario====

{{spmenemybox

Boos return as enemies in ''[[Super Paper Mario]]''. Additionally, the Arcade in Flipside houses a Boo themed shooting game. This game has the player shooting Boos (Both Normal, Dark and occasionally Big Boos) to score points. A [[Toad]] frequently appears to give power ups, as long as the player saves him from his Boo captor.

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===''Mario & Sonic'' series===

[[File:BooMASATOG.png|right|frame|100px]]

Boos are minor, supporting characters in ''[[Mario & Sonic at the Olympic Games]]''. It appears in the version for the [[Wii]] and [[Nintendo DS]]. They are not playable characters, but they can be seen in the crowd with other ''[[Mario (series)|Mario]]'' enemies, including [[Bullet Bill]]s, [[Goomba]]s, and [[Bob-omb]]s. Though Boos do not appear in ''[[Mario & Sonic at the Olympic Winter Games]]'', [[King Boo]] is one of the rivals.

===''Mario Bros.''===

Boos make an appearance in the ''[[Super Mario All-Stars]]'' remake of ''[[Mario Bros. (game)|Mario Bros.]]''. This version of ''Super Mario All-Stars'' is for the [[Nintendo Entertainment System|NES]]. [[Koopa Troopas]], who replace [[Shellcreepers]], and [[Spiny|Spinies]] also appear in the remakes of ''Mario Bros.'', but not in the same remake as Boos. Boos also replace the green fireballs from the original ''Mario Bros.''.

===''Mario's Picross''===

Boos also make a cameo appearance in the [[Game Boy]] game, ''[[Mario's Picross]]''. They appear in one of the pictures in the "Early Picross" stage in level 6C. The other character that appears in the "Early Picross" stage is [[Mario]], who appears in level 6H. Like their first appearance, ''[[Super Mario Bros. 3]]'', they appear under the name '''Boo Diddley'''.

===''Mario Clash''===

Boos make appearances in the [[Virtual Boy]] game, ''[[Mario Clash]]''. They are among the nine enemies. Some of these enemies include, [[Pokey|Pokeys]], [[Paragoomba|Paragoombas]], and [[Snake (Mario Clash)|Snakes]]. Though ''Mario Clash'' is a new style of ''[[Mario Bros. (game)|Mario Bros.]]'', Boos do not appear in ''Mario Bros.'', but they do appear in a remake. In this game, Boos' objectives are to defeat [[Mario]], but Mario is able to attack a Boo from the side.

[[File:LMBoo.jpg|thumb|A Boo in ''Luigi's Mansion''.]]

In ''[[Luigi's Mansion]]'', Boos are the main antagonists. King Boo sends a letter to Luigi, stating that he had won a Mansion in a contest. However, Luigi did not enter any contest, but pays no attention, and heads off. Mario goes on ahead, but get captures by the King of the Boos, [[King Boo]]. Luigi has to rescue him from the Boos, using [[Professor Elvin Gadd|E. Gadd]]'s [[Poltergust 3000]]. Luigi manages to find his brother, stuck in a painting. He ends up having to battle King Boo in order to rescue Mario. King Boo sends them to the roof of the Mansion, and uses a Bowser suit to battle him. However, the suit's head could come off once a spikeball was thrown at him, and King Boo would float out, leaving him open for Luigi's Poltergust. After taking away all of his 500 HP, King Boo is turned into a painting, and Mario is restored back to his normal self. However, King Boo manages to escape by unknown means and reappears in several future ''[[Mario (series)|Mario]]'' games.

There are 51 Boos which Luigi must suck up in the Poltergust 3000. There are 50 regular Boos, 15 of them making up the portrait ghost [[Boolossus]], with King Boo as the final Boo. When Luigi attacks them, they usually run away, but occasionally twirl into him to cause damage. It should also be noted that all of the 36 Boos, excluding King Boo and counting Boolossus as one Boo, have puns in their names.

===''Game & Watch Gallery Advance''===

A Boo appears in the Modern version of ''[[Donkey Kong 3 (Game & Watch)|Donkey Kong 3]]'' in ''[[Game & Watch Gallery Advance]]''. If Mario or Donkey Kong turn their backs, it'll slowly come closer to the player that it's closest to. If it gets close enough, the Boo will either scare Donkey Kong and award the player points (1 player only), or scare Mario and give the player a miss.

===''Dance Dance Revolution: Mario Mix''===

[[File:DDRMMboos.jpg|thumb|left|A Boo with [[Mario]].]]

Some Boos make appearances in ''[[Dance Dance Revolution: Mario Mix]]'' in both regular and giant varieties. Their objective is to try to make [[Mario]] miss a step. If successful, they block Mario's next move. Mario is able to step on regular Boos to hold them back, but he can not do the same to their gigantic counterparts.

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[[File:BooHoops.PNG|thumb|right|Boo from ''Mario Hoops 3-on-3''.]]

A Boo makes an appearance in ''[[Mario Hoops 3-on-3]]''. It appears as an unlockable character. It is unlocked by beating the [[Flower Tourney]] on hard. Boo's special ability is the [[Thriller Dunk]]. This is performed by tapping a ''B''-like shape twice. In the game, the Boo is classified as a tricky character. The other tricky characters are [[Paratroopa]], [[Fly Guy]], and [[Moogle]]. Boo is also one of many of the unlockable characters to not have a baller name.  

[[File:LMSportsMix.png|thumb|left|Boos seen in the background in ''Mario Sports Mix''.]]

Boos appear in ''[[Mario Sports Mix]]''. They appear as the only members of the crowd in [[Luigi's Mansion (place)#Mario Sports Mix|Luigi's Mansion]] circling around the court. Their appearances are in [[Basketball]] and [[Volleyball]] matches and their laughs can also be heard during the game. Mainly, they can be heard when the player gets a point.

===''Mario & Luigi'' series===

====''Mario & Luigi: Superstar Saga====

|image=[[File:Boo SSS.png]] 

|speed=110

|def=1000

|location=[[Bowser's Castle]]

|item=[[1-Up Mushroom]], Random Slacks

In ''[[Mario & Luigi: Superstar Saga]]'', Boos are enemies that only appear in [[Bowser's Castle]]. Outside of the battle, they hover around, attacking Mario and Luigi when they are not looking. However, they look away if Mario or Luigi make eye contact. The Boos also show the ability to teleport outside battle. In battle, they fly up into the air, and fall back down into the Mario Bros., and even prohibit the use of certain moves. These Boos are unknowingly aiding [[Bowletta]], thinking she is the actual Bowser.

====''Mario & Luigi: Partners in Time====

|image=[[File:Boo Pit.png]]

|coins=4

|items=

|related=[[Dark Boo]]

|notice=Stats in parentheses are from the Japanese and European versions of the game if they differ from the original American stats.<ref>[http://themushroomkingdom.net/mlpit_guide.shtml TMK Mario & Luigi: Partners in Time Enemy Guide]. Some stats were changed from the original American version of the game to the Japanese and European versions.</ref>

During the events of ''[[Mario & Luigi: Partners in Time]]'', Boos appear in [[Bowser's Castle]] of the past. Mario, Luigi, [[Baby Mario]], and [[Baby Luigi]] meet a lot of them while trying to reach the end of Baby Bowser's Castle. In the field, Boos attack the same way as they did in ''Mario & Luigi: Superstar Saga'', but in-battle they fight differently, and have significantly decreased defense. They cover their faces, but when they start to attack, the Boo would take one of its hands off one of its eyes, showing who it is about to attack. If it shows its right eye, it will attack Mario, but if it shows its left eye, it is attacking Luigi. Then it would appear from behind, and charge towards one of the Mario Bros.. However, this could easily be countered with a jump. They also appear during the battle with [[Sunnycide]]. After the Mario Bros. flip the egg monster over, Sunnycide could summon a Boo to attack Mario or Luigi. [[Dark Boo]]s also return in the game, and are found in the [[Gritzy Caves]]. Also, when a [[Handfake]] has a [[Bowser]] sign, a Boo or a [[Fly Guy]] carries a flame from Bowser's mouth.

====''Mario & Luigi: Bowser's Inside Story====

[[File:Bis Boo plate sprite.PNG|frame|left|A Boo holding a plate.]]

Boos make a reappearance in ''[[Mario & Luigi: Bowser's Inside Story]]''. They appear in Bowser's Castle, after being brainwashed by Fawful, and they also help many of the former minions of Bowser push the Fawful statue against the power-upped Bowser. In addition, a Boo appears whenever Bowser gets a level up. The Boo (just like the Lakitu in Mario's or Luigi's level up screen) holds the circle for getting a bonus upgrade for the stat of the players choice.

[[Yikk]], a ghost who appears in the same game at the [[Tower of Yikk]], explains that he researches Boos. He even builds a [[Boo-ray Machine|machine]] to visualize Boo transparency waves before he passed away.

An odd thing shown in the game is a Boo and [[Koopa Troopa]] in love with each other in Bowser's Castle. They not only love each other, but love Fawful, due to the brainwashing that was put on the minions.

===''Mario vs. Donkey Kong'' series===

====''Mario vs. Donkey Kong====

A Boo appears in ''[[Mario vs. Donkey Kong]]''. Throughout the whole game, they make only one appearance in the [[Spooky House]]. It uses its regular battle strategy, which is attacking Mario when his back is turned and looking away when Mario turns around. The Boo sticks its tongue out at [[Mario]] if he is about to lose a life.

===''Mario Pinball Land===

[[File:Boo-piranha.jpg|thumb|left|A group of Boos with [[Petey Piranha]] in ''Mario Pinball Land''.]]

In ''[[Mario Pinball Land]]'', Boos appear in certain areas in the game. [[Mario]] cannot hit them at the front because they will become transparent as Mario passes through them. If Mario hits one of the Boos on its back, the Boo disappears and it is worth 2000 points. They occasionally will disappear and reappear to another spot in the area.

===''Super Princess Peach===

[[File:SPPBoo.png|thumb]]

Boos appear in [[Princess Peach|Princess Peach's]] first starring game, ''[[Super Princess Peach]]''. They act as normal Boos, hiding their face when Peach looked, and attacking when Peach has her back turned. However, there is an angry variety called the [[Mad Boo]], which attacks the opposite way. They attack when Peach looks at them, and gander around for her when she looks away.

===''Super Smash Bros.'' series===

====''Super Smash Bros. Brawl''====

[[File:Boo Trophy.jpg|thumb|100px|left|The trophy of Boo from ''Super Smash Bros. Brawl''.]]

As well as appearing as a [[trophy]] in ''[[Super Smash Bros. Brawl]]'', Boos make cameos in the [[Luigi's Mansion (place)#Super Smash Bros. Brawl|Luigi's Mansion stage]]. When a part of the mansion is knocked down, Boos are seen flying out.

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==General Information==

===Appearance===

[[File:Boo_History.PNG|frame|right|''Boos'' as they appear in various games.]]

Though their specifics change from game to game, Boos are usually bashful, cowardly, spherical ghosts. Although they are typically white in color there are sub-species of the Boo race which appear in different colors, such as [[Red Boo|pink]]. From ''[[Luigi's Mansion]]'' onward, it became common to picture Boos sticking out their tongues. Since ''[[Super Mario 64]]'', Boos have been portrayed with a unique, high-pitched laugh. In actuality, this laugh is the same as [[Bowser]]'s, sped up several times<ref>[http://www.youtube.com/watch?v=crx21K5uMIk Video comparison of Boo and Bowser's laughs]</ref>. However, Boos got a new laugh starting in the [[Hide and Boo Seek]] mini game, being more of a haunting laugh than before. Although most species of Boo will cover their faces and become intangible when looked at, they will often sneak behind their victim and strike when their back is turned. Due to their ghostly abilities, Boos are generally invulnerable, and cannot be harmed by ordinary means of attack. While this is true, they are not invincible, and are especially vulnerable to the light. If they are exposed to a source of light, Boos are usually weakened, and in some cases they may even perish. Usually, they can also have other weaknesses. Because of their intolerance to the light, Boos will often hide if they are trapped in lit rooms. While the ghosts generally appear to be more afraid of their victims than their victim is of them, this is not always the case. Some Boos have absolutely no problem meeting their victim's gaze, and will even try to attack. Boos tend to have a taste for the fine arts, as seen in ''[[Paper Mario]]'' and ''[[Mario Party 4]]''. The best way to defeat a Boo is to sneak behind it so it cannot see the player and disappear, or to set a trap for the Boo while the player's back is turned (ie: using an item, or in ''[[Super Paper Mario]]'', a Pixl).