Editing Boo

{{FASTAT}}

{{Species-infobox
|title=Boo
|expand=expandable
|image=[[Image:BooMP8Official.png|200px]]
|sub_species=
[[Atomic Boo]] <br>[[Balloon Boo]] <br>[[Big Boo]]<br>[[Big & Little Boo]]<br>[[Blindfold Boo]]<br>[[Boo Balloon]]<br>[[Boo Buddy]]<br>[[Boo Buddy Block]]<br>[[Boo Buddy Snake]]<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>[[Fishin' Boo]]<br>[[Li'l Boo]]<br>[[Mad Big Boo]]<br>[[Mad Boo]]<br>[[Red Boo]]<br>[[Sleepy Boo]]<br>[[Stretch]]<br>[[Terekuribo]]<br>[[Bomb Boo]]<br> [[Mini Boos]]
|first_appearance=''[[Super Mario Bros. 3]]''
|notable=[[Bigger Boo]]<br>[[Boolossus]]<br>[[Bootler]]<br>[[Bow]]<br>[[Franky]]<br>[[Herbert]]<br>[[Igor]]<br>[[King Boo]]<br>[[Lahla]]<br>[[Luigi's Mansion Boos]]<br>[[Peeka]]<br>[[Big Boo]]<br>[[Stanley (Boo)|Stanley]]<br>[[The Creepy Steeple Boo]]<br>[[Spooky Speedster]]
|latest_appearance=''[[Super Mario Galaxy 2]]''
}}
{{Quote|Ghosts... ...don't... ...DIE!  Heh, heh, heh!  Can you get out of here... ...alive?|Boo|Super Mario 64}}

The '''Boo''' (originally known as '''Boo Diddley''') is a common enemy in the [[Mario (series)|Mario series]] that first appeared in ''[[Super Mario Bros. 3]]''. They are a type of white spherical ghost with menacing and constantly open mouths and also small "arms" of some sort. [[Goombario]]'s [[tattle]] for [[Igor]] in ''[[Paper Mario]]'' states, ''"He probably was a merchant before he became a Boo."'', implying that current Boos may have once been living beings.  
 
==History==
===''Super Mario'' series===
====''Super Mario Bros. 3====
[[Image: SMB3Boo.jpg|thumb|left|A '''Boo''' from ''[[Super Mario Bros. 3]]''.]]
In ''[[Super Mario Bros. 3]]'', Boos appeared for the first time and were referred to as Boo Diddleys, a pun off the late former rock star Bo Diddley, but future games referred to them only as Boos. The Boo would shield his face if [[Mario]] or [[Luigi]] looked at it, but would start chasing if Mario or Luigi looked away. Boos are unable to be defeated, unless the two were equipped with a Hammer Bro. Suit, Koopa shell, or Starman (fireballs didn't affect Boos). The game also had [[Stretch]]es, which were Boos with very long bodies that lived in the Fortresses throughout the kingdom.
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====''Super Mario World====
[[Image:SMWBoo.png|frame|right]]
In ''[[Super Mario World]]'', there were [[Ghost House]]s, which contained many Boos. These Boos retained their usual pattern of attack from ''Super Mario Bros. 3'' and sometimes made faces at Mario or Luigi. The game also introduced a new sub-species of Boo, the [[Boo Buddy]], which could take on numerous different forms. It also introduced a giant version of the Boo, the [[Big Boo]].
====''Super Mario RPG: Legend of the Seven Stars====
See [[Big_Boo#Super_Mario_RPG:_Legend_of_the_Seven_Stars|The Big Boo (Super Mario RPG: Legend of the Seven Stars)]].
====''Super Mario 64====
[[Image:Sm64boo.jpg|frame|left|A Boo in ''[[Super Mario 64]]''.]]
Boos make a starring appearance in the level, [[Big Boo's Haunt]], in ''[[Super Mario 64]]''. A bunch of Boos can be found in the Castle Gardens (holding [[Red Coin]]s in the ''DS'' version). After collecting 12 Power Stars, Mario is able to enter Big Boo's Haunt. A portal to this course is hidden inside a Big Boo. After Mario attacks it once, a small cage falls out of him, and Mario can jump in. He also battles Big Boo many times here. Additionally, when the Boos look at Mario, the Boos 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 easily defeat them with a ground pound.
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====''Super Mario Bros. Deluxe''====
While Boos did not appear in the original ''[[Super Mario Bros.]]'', Boos appeared in ''[[Super Mario Bros. Deluxe]]'' as the main enemy in the "You VS. Boo" mode. The goal was 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====
[[Image:booshine.jpeg|thumb|right|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 jumping on them. They also disguise themselves as [[coins]], but can be told apart from the fact they aren't spinning, while real coins do spin. It turns out that Hotel Delfino has numerous mysteries, including flipping floor tiles, a magic painting, and a flipping bookcase. Mario had a tough time trekking the mysterious hotel, and solving its many mysteries. Eventually, he found King Boo in the basement of the Casino, and had to battle him. He could defeat him by throwing a Chili, which appears randomly, at him, and then throwing another piece of fruit at him. Mario had to do this three times before he finally fell. Boos could also disguise themselves as Shadow Mario, while the real Shadow Mario was running from Mario. They could be told apart from the fact that the fake Shadow Marios are very pale, while the real one is dark blue. Their appearance had just one change, they had blue circles surrounding their black pupils.
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====''Super Mario 64 DS====
In ''[[Super Mario 64 DS]]'', Boos still kept the same role they did in ''Super Mario 64''. However, Mario could find a Luigi Painting, which would take him to the [[Big Boo Battle]] level on the Balcony. After reaching the end, by following the cackle of [[King Boo]], he finally made it to a room with a mirror at the end of it. He then has to battle King Boo, who is hiding in one side of the mirror, and Mario must look at the mirror to see where he is. After hitting him three times, Mario gains the key to the room Luigi's trapped in, and hurries off. 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 again.

====''New Super Mario Bros.''====
Boos also appeared in ''[[New Super Mario Bros.]]''. They were found mainly in Ghost Houses, scattered throughout the game as well as World 8-1. They appeared like they usually do, shy. The game also introduced the [[Balloon Boo]], which were normal Boos who could suck up the air, and become much bigger (4-5 times their size). [[Broozer]] the boxing ghost appeared in the game as well.

====''Super Mario Galaxy''==== 
[[Image:Speedster.jpg|thumb|left|Mario racing the [[Spooky Speedster]].]]
Boos make an appearance in ''[[Super Mario Galaxy]]'' as well, and are found in the [[Ghostly Galaxy]], the [[Bigmouth Galaxy]], the [[Deep Dark Galaxy]], and the [[Sand Spiral Galaxy]]. Boos act in the same way that they did in previous games, such as hiding and turning transparent when Mario looks at them, and following him 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 they cannot be defeated by Mario's spin attack or jump attack (however the spin attack can throw a Boo around Mario, knocking it off course temporarily or into a light). Strangely, if a Boo catches sight of Mario while he is in the [[Boo Suit]], it appears to develop an attraction toward Mario. If a Boo catches up to Mario while he is in the Boo Suit, Mario loses the suit, but does not lose any health. Also, a Boo called "the [[Spooky Speedster]]" is found in two areas of the game, and Mario must race him to win a [[Power Star]]. This game also introduces a new kind of Boo, called the [[Bomb Boo]], that is black and can be grabbed by its tongue and hammer-tossed into statues and enemies.
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===''The Adventures of Super Mario Bros. 3''===
[[Image:CartoonBoo.jpg|thumb|right|A Boo in ''[[The Adventures of Super Mario Bros. 3]]''.]]
Boos made infrequent appearances in ''[[The Adventures of Super Mario Bros. 3]]'', 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, such as in "[[Reign Storm]]", where Bowser has several Boos terrorize the new Mushroom Shopping Mall. They were referred to as 'Boodidlies'.
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===''Super Mario World'' television series===
===="Ghosts 'R' Us"====
In ''[[Super Mario World (TV series)|Super Mario World]]'', Boos, completely redesigned, appear only in the episode "[[Ghosts 'R' Us]]", in which a gang of Boos, as well as a Big Boo, appear to chase [[Yoshi]] through [[Wizardheimer's Haunted House]].

===''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 being stared at in the face. Eventually, nearing exhaustion, Mario races to a nearby room, dragging Luigi and 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 thats why they act so nasty. These Boos and their Big Boo leader were last seen happily waving goodbye to Mario, Luigi and Yoshi as the left the haunted house, which the Boos led them out of. Boos also appear at Peach's wedding.

===''Mario Kart'' series===
In the ''[[Mario Kart]]'' series, the Boo is used as a very tactical item. When activated, the Boo selects a racer with the best item in reach, steals the item and gives it to the player. 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. Additionally, in ''[[Mario Kart: Super Circuit]]'', Boo also slowed down the leading racer and in [[Mario Kart DS]], using the Boo wouldn't make the player lose any speed when driving off-road, so various shortcuts can be exploited. 

Boo was [[Beta Elements|set]] to be playable in ''[[Mario Kart Wii]]'', but was taken out of the final game in favor of King Boo, who had already appeared as a playable character in ''[[Mario Kart: Double Dash!!]]''.<ref>[http://www.unseen64.net/2008/05/04/mario-kart-wii-beta/ Unseen 64] (Accessed on 7-9-08)</ref>
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===''Super Mario Land'' series===
====''Super Mario Land 2: 6 Golden Coins====
[[Image:Boosprite.PNG|frame|right]]
Boos were once again featured in ''[[Super Mario Land 2: 6 Golden Coins]]''. These Boos are relatively unchanged from the previous Boos. Boos in this game were found in the [[Pumpkin Zone]]. A thrown [[Green Shell]] is enough to finish it off for good. There also is a new sub-species named [[Terekuribo]]s, which are a cross-breed between Boos and Goombas. Those walk like normal Goombas, but their weaknesses are those of Boos.

===''Super Mario Bros.'' film===
In the live-action ''[[Super Mario Bros. (movie)|Super Mario Bros.]]'' movie, several Boos can be briefly seen surrounding the [[Valley of Bowser]] from ''Super Mario World'' on a television screen in the [[Boom Boom Bar]].

===''Hotel Mario===
Boos appeared in ''[[Hotel Mario]]'', though exclusively under the name of '''Boo Buddies'''. There are two types of Boos in this game. Some stay visible and don't hurt Mario until transparency is achieved, at which they can harm the heroic plumber. The game also features the regular Boos.

===''Yoshi'' series===
====''Super Mario World 2: Yoshi's Island====
[[Image:YIBoo.png|frame|left]]
[[Image:Boo.gif|frame|right]]
Boos first appeared chronologically as antagonists to [[Yoshi]]  in ''[[Super Mario World 2: Yoshi's Island]]''. They were first seen in World 2, which featured numerous ghastly creatures. They were underlings for [[Kamek]], the head of the [[Magikoopa|Magikoopas]], who turned one Boo into [[Bigger Boo]], which grew in size every time he was hit by an egg. The main boss of World 2 was also a Boo-like creature, [[Roger the Potted Ghost]], who was a normal flower pot, until Kamek made him giant, and transformed it into a living creature. Normal Boos can only be defeated when they are attacking Yoshi, so Yoshi had to bounce an egg off the wall, and into the Boo. The game also featured the [[Boo Blah]], a spectacled Boo exclusive to this game. Big Boos  appeared as well.

====''Yoshi's Story====
[[Image:Bigboo.gif|frame|left|A Boo in ''Yoshi's Story''.]]
Boos reappear 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 was called a '''Big Boo''', despite not being an actual Big Boo.  The Ghost Castle was also home to other Boo species: namely, the [[Boo Block]], [[Blindfold Boo]], and others. [[Yoshi Sewers]] also had ghost platforms, along with a blue variant called a [[Boo Buddy]].
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====''Yoshi's Universal Gravitation''====
Very very few Boos were in ''[[Yoshi's Universal Gravitation]]''. In fact, there are four missions they exist in. They follow the same tactics as normal, are in 3-D, and retain their normal laugh.

====''Yoshi's Island DS''====
Yoshi, yet again, came in contact with a few Boos in ''[[Yoshi's Island DS]]''. Here, they are commonly found in Castles, along with other ghastly creatures. They are, yet again, working for Kamek. They attack the same as all Boos before, but, like ''Super Mario World 2: Yoshi's Island'', they can only be defeated if Yoshi looks away, so he must bounce an egg off of the wall. A Boo-like mid-boss, named [[Hector the Reflector]] appears as well. The Boos' laugh used in many games before is used for the boss [[Six-Face Sal]], and even [[Baby Bowser]].

===''Super Mario RPG: Legend of the Seven Stars===
There were also Boos in ''[[Super Mario RPG: Legend of the Seven Stars]]''. They were found in the [[Kero Sewers]], a sewer system full of ghastly monsters. However, they were labeled as "[[The Big Boo]]", despite being the same size as a normal Boo. In the same way, they called the Boos found at the [[Factory]] [[Li'l Boo]]s but they were still the normal size. A Big Boo is a member of the [[Three Musty Fears]].

===''Mario Party'' series===
[[Image: Booparty4.jpg|thumb|right|The Sorcerer Boo from ''Mario Party 4''.]]
Boo also regularly appears in the ''[[Mario Party (series)|Mario Party]]'' series. Boo started off as a character which helped to steal coins and stars from players when they passed by him, as well as a host for ''[[Mario Party 4]]''. However, starting from ''[[Mario Party 5]]'', Boo was a playable character. ''[[Mario Party 8]]'' even featured [[King Boo's Haunted Hideaway]] as one of the boards, King Boo's first appearance in ''Mario Party''. Boo's partner for ''[[Mario Party 3]]'' was Yoshi, [[Koopa Kid]] in ''Mario Party 5'' and ''[[Mario Party 6]]'' and [[Dry Bones]] in ''[[Mario Party 7]]'' and ''[[Mario Party 8]]''. Boo was not a playable character in ''[[Mario Party DS]]'' and played no part in board play, but appeared as an unlockable figure, also appearing in mini-games like [[Boo Tag]].
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===''Paper Mario'' series===
====''Paper Mario====
[[Image:PMBoo.png|frame|left]]
The [[Boo's Mansion]] in ''[[Paper Mario]]'' was a bigger version of the ''Super Mario World'' Ghost Houses, which had many puzzles involving Boos in it. The only difference, is that these Boos were kind Boos (yet, still a bit tricky). After solving these puzzles, [[Lady Bow]], the princess of the Boos, joined Mario's party, in order to destroy [[Tubba Blubba]], who has been terrorizing the native Boos. Mario helped her, in order to get the [[Star Spirit]], Lady Bow had in her possession. In ''[[Paper Mario: The Thousand-Year Door]]'', Bow and [[Bootler]] are on vacation in [[Poshley Heights]] after Mario and his teammates defeat the [[Shadow Queen]].
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====''Paper Mario: The Thousand-Year Door====
In ''[[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 there. He 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 [[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]]". The game also introduced a more powerful sub-species, the [[Dark Boo]].

====''Super Paper Mario====
{{Catch Card #1
|image=[[Image:92. Boo Card.JPG]]
|hp=4
|atk=1
|def=
|card type=Common
|tattle=These spooks only approach when your back is turned. They'd be awesome at "Red light, green light"! Too bad they bite you if they win.
|before= [[Dark Cherbil|91]]
|#=92
|after= [[Dark Boo|93]]
}}

Boos return as enemies in ''[[Super Paper Mario]]''.

The Arcade in Flipside houses a Boo themed shooting game. This game has you shooting Boos (Both Normal, Dark and occasionally Big Boos) to score points. A [[Toad]] frequently appears to give power ups, as long as you save him from his Boo captor.
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===''Luigi's Mansion===
[[Image:LMBoo.jpg|thumb|left|A Boo in ''Luigi's Mansion''.]]
In ''[[Luigi's Mansion]]'', the Boos were the main antagonists. King Boo sent a letter to Luigi, stating that he had won a Mansion in a contest. However, Luigi did not enter any contest, but paid no attention, and headed off. Mario went on ahead, but got captured by the King of the Boos, [[King Boo]]. Luigi had to rescue his brother from the Boos, using [[E. Gadd]]'s [[Poltergust 3000]]. Luigi managed to find his brother, stuck in a painting. He ended up having to battle King Boo in order to rescue Mario. King Boo sent them to the roof of the Mansion, and used 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 got turned into a painting, and Mario was restored back to his normal self. However, King Boo managed to escape.

There are 51 Boos which Luigi must suck up in the Poltergust 3000. There are 50 regular Boos, 15 of them making up [[Boolossus]], with King Boo as the final Boo. See [[Luigi's Mansion#The Boos|this section]] for more information about the individual Boos.
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===''Mario & Luigi'' series===
====''Mario & Luigi: Superstar Saga====
In ''[[Mario & Luigi: Superstar Saga]]'', Boos were enemies that appeared in [[Bowser's Castle]]. Outside battle, they would hover around, attacking Mario and Luigi when they are not looking. However, they would look away if Mario or Luigi made eye contact. In battle, they would fly up into the air, and fall back down into the Mario Bros. The Boos were unknowingly aiding [[Bowletta]], thinking she was the actual Bowser.

====''Mario & Luigi: Partners in Time====
{{pitenemy|
|title = '''''[[Mario & Luigi: Partners in Time|Partners in Time]]'' Enemy'''
|image = 
|location = [[Baby Bowser's Castle]]
|hp = 15 (18)
|power = 25 (24)
|defense = 25 (20)
|speed = 22 (23)
|experience = 5
|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 appeared in [[Bowser's Castle]] of the past. Mario, Luigi, [[Baby Mario]], and [[Baby Luigi]] met a lot of them while trying to reach the end of Baby Bowser's Castle. In the field, Boos attacked the same way as they did in ''Mario & Luigi: Superstar Saga'', but in-battle they fought differently. They would cover their faces, but when they start to attack, the Boo will 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. They will appear from behind, and charge towards one of the Mario Bros. However, this could easily be countered with a jump. They also appeared 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, found in the [[Gritzy Caves]].
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===''Mario vs. Donkey Kong'' series===
====''Mario vs. Donkey Kong''====
A Boo has appeared once in ''[[Mario vs. Donkey Kong]]'' at [[Spooky House]]. They acted just like their former battle strategy, with them hiding when Mario looks at them. They will spit their tongue out at [[Mario]] if they were about to lose a life.

===''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 their backs, the Boo disappears as it is worth 2000 points. They occasionally disappear and reappear to another spot in the area.

===''Super Princess Peach===
Boos appeared in [[Princess Peach|Princess Peach's]] first starring game, ''[[Super Princess Peach]]''. They acted as normal Boos, hiding their face when Peach looked, and attacking when Peach had her back turned. However, there was an angry variety called the [[Mad Boo]], which attacked the opposite way. They attacked when Peach looked at them ("losing their shyness"), and gander around for her when she looks away.

== The Appearance of a Boo ==

[[Image: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 [[Pink 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 ''[[New Super Mario Bros.]]'', 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 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).

Boos are often characterized by their sub-species; despite their similarities in appearance and attack manner. Boo species tend to wildly differ in size, with some such as [[Boo Buddy|Boo Buddies]] being miniature, while others such as the [[Atomic Boo|Atomic Boos]] boast gigantic size.   

In ''[[Luigi's Mansion]]'', [[Professor E. Gadd]] notes that Boos have mysterious powers that increase when they gather together in large groups. While it is difficult to stop them, they can be weakened if one is able to defeat members of the group.

Boos have few predators, their only known threat being a [[Clubba]] named [[Tubba Blubba]]. This is first seen in ''Paper Mario'', when he began devouring Boos; this, however, may have been his revenge for the countless times the ghosts scared him.   

In Paper Mario Goombario states that Boos must have strong facial muscles because of the way they surprise Toads.

=== Home ===
Boos typically make their homes in dark forests, such as the [[Forever Forest]] and [[Boo Woods]], and tend to be most commonly found in older building such as mansions, castles, and [[Ghost House|Ghost Houses]]. Although most of them live in such dwellings, they also seem to enjoy wastelands. One of the only known Boo villages lies in [[Gusty Gulch]].
 
They are typically found en masse, because their fears make them find strength in numbers. 

=== Allegiance === 
Though most Boos tend to side with [[King Boo]], they seem to, for the most part, actually stand as neutral.  For example, Boos are by now a common enemy in most side-scrolling games; however, in the ''Paper Mario'' series and now increasingly in the multiplayer games, Boos have been seen to take the side of the [[Mushroom Kingdom]].  Lady Bow, in fact, helped Mario save the kingdom in ''[[Paper Mario]]''.  In another example, the Boos in the [[Creepy Steeple]] from ''[[Paper Mario: The Thousand-Year Door]]'' attack Mario initially, but later in the game Mario is sent a friendly letter from one of them.  King Boo, on the other hand, has several times been shown to wish nothing but terrible things for [[Luigi]] (but this could be accredited to Luigi being easily scared, making him a prime target for most Boo antics).

==Sub-Species==
*[[Atomic Boo]] &ndash; A giant Boo made from various other Boos combined together.
*[[Balloon Boo]] &ndash; Boos who inhale air to become giant in size; they release this air to propel themselves forward.
*[[Big Boo]] &ndash; Boos gigantic in size.
**[[Mad Big Boo]] &ndash; Gigantic versions of Mad Boos.
*[[Big & Little Boo]] &ndash; A Big Boo, which is always followed by two regular Boos.
*[[Blindfold Boo]] &ndash; Blind Boos who rely on hearing to track victims.
*[[Boo Balloon]] &ndash; Boos resembling blue balloons.
*[[Boo Buddy]] &ndash; Small Boos, known to attack in swarms.
*[[Boo Buddy Block]] &ndash; Boos who turn to stone when looked at.
*[[Boo Buddy Snake]] &ndash; Boos who are joined together in a line.
*[[Boo Guy]] &ndash; A ghostly [[Shy Guy]] Boo.
*[[Boo Man Bluff]] &ndash; A blind Boo who relies on hearing to find prey.
*[[Broozer]] &ndash; Humanoid Boos with boxing gloves which can bash through almost anything.
*[[Circling Boo Buddies]] &ndash; A pack of Boos which travel around in a circle.
*[[Dark Boo]] &ndash; Powerful, purple Boos.
*[[Dark Dark Boo]] &ndash; Boos without features, who resemble shadows.
*[[Disappearing Boo Buddies]] &ndash; A large swarm of Boos.
*[[Fishin' Boo]] &ndash; An indestructible [[Lakitu]] Boo.
**[[Calm Fishin' Boo]] &ndash; Lethargic Fishin' Boos, commonly found asleep.
*[[Li'l Boo]] &ndash; Blue colored Boos encountered in the [[Factory]].
*[[Mad Boo]] &ndash; Enraged Boos who attack when looked at, but shy away when not looked upon.
*[[Red Boo]] &ndash; Boos red in color, they turn into platforms when exposed to water.
*[[Sleepy Boo]] &ndash; Large, near-invulnerable Boos commonly found sleeping.
*[[Stretch]] &ndash; Boos inhabiting a white platform.
*[[Terekuribo]] &ndash; A combination of a Boo and a [[Goomba]].
*[[Bomb Boo]] &ndash; Black Boo with yellow eyes that explodes.
*[[Mini Boos]] &ndash; Used as items in ''[[Mario Super Sluggers]]''.

==Notable Boos==
*[[Bigger Boo]] &ndash; ''[[Super Mario World 2: Yoshi's Island]]
*[[Boolossus]] &ndash; ''[[Luigi's Mansion]]
*[[Bootler]]  &ndash; ''[[Paper Mario]]
*[[Bow]] &ndash; ''[[Paper Mario]]
*[[Franky]] &ndash; ''[[Paper Mario]]
*[[Herbert]] &ndash; ''[[Paper Mario]]
*[[Igor]] &ndash; ''[[Paper Mario]]
*[[King Boo]] &ndash; ''[[Luigi's Mansion]]
*[[Lahla]] &ndash; ''[[Paper Mario: The Thousand-Year Door]]
*[[Luigi's Mansion Boos]] &ndash; ''[[Luigi's Mansion]]
*[[Peeka]] &ndash; ''[[Paper Mario: The Thousand-Year Door]]
*[[Big Boo]] &ndash; ''[[Super Mario World]]
*[[Stanley (Boo)|Stanley]] &ndash; ''[[Paper Mario]]
*[[The Creepy Steeple Boo]] &ndash; ''[[Paper Mario: The Thousand-Year Door]]
*[[Spooky Speedster]] &ndash; ''[[Super Mario Galaxy]]

==Tools==
*[[Boo's Sheet]] &ndash; ''[[Paper Mario: The Thousand-Year Door]]
*[[Fright Bomb]] &ndash; ''[[Super Mario RPG: Legend of the Seven Stars]]
*[[Boo Bell]] &ndash; ''[[Mario Party 2]]
*[[Boo's Crystal Ball]] &ndash; ''[[Mario Party 4]]

==Profiles and Statistics==

===Boo's Stats and Tattle Information, ''Paper Mario: The Thousand-Year Door===
{{ttydenemy
|PM2 = yes
|image = [[Image: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
|moves = Scare (3),Invisibility, Makes itself or another invisible for two turns
|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]]
|# = 71
|after = [[Dark Boo|72]]
}}

In ''Paper Mario: The Thousand-Year Door'', these shy specters can become invisible, making it impossible to attack them for one turn. Mario should try to defeat the Boo with all haste before it can use this attack. Boos don't have much Attack power, but their ability to make themselves transparent and their fairly solid HP ensure that the Boo is no pushover.

Boos in battle also have the ability to make themselves float high in the air (preventing ground attacks such as hammers) and sometimes are found holding [[Mini Mr. Mini]]s. When seen in the audience, they may throw [[Boo's Sheet]]s for Mario, or they may float on-stage, choose any character in the battle at random, and make that character invisible for one turn.

===Lil' Boo's Stats, ''Super Mario RPG: Legend of the Seven Stars===

*'''HP''' 66
*'''Attack''' 120 
*'''Defense''' 20 
*'''Magic Attack''' 74
*'''Magic Defense''' 120 

===The Big Boo's Stats, ''Super Mario RPG: Legend of the Seven Stars===
*'''HP''' 43
*'''Attack''' 18 
*'''Defense''' 0  
*'''Magic Attack''' 18 
*'''Magic Defense''' 24

===Trophies from the ''[[Super Smash Bros. (series)|Super Smash Bros. series]]''===
====''Super Smash Bros. Melee''====
{| border=1 cellpadding=1 cellspacing=0 width=100%
|-
! width=100px | Name !! width=100px | Image !! width=150px | Game !! | Description
|-
! Boo
| [[Image:Trophy209.PNG|100px]]
| align=center | ''Super Mario Bros. 3''<br>02/90
| ''These shy spirits inhabit Mario's world and have been known to vanish or freeze when met face-to-face. In recent years, they seem to have overcome their fears in order to pursue tennis and other social activities. They usually appear in groups and fly in formation. From time to time, giant Boos make surprise appearances.''
|-
|}

====''Super Smash Bros. Brawl''====
{| border=1 cellpadding=1 cellspacing=0 width=100%
|-
! width=100px | Name !! width=100px | Image !! width=200px | Game !! | Description
|-
! rowspan=2 | Boo
| rowspan=2 | [[Image:Boo_Trophy.jpg|100px]]
| align=center | '''NES''' ''Super Mario Bros. 3''
| rowspan=2 | ''A bashful ghost who draws near when your back is turned but shyly stops and disappears when you face it. Boos have been seen recently in activities like baseball and tennis, so it's thought that they may have conquered their fear of humans. Boos are also characterized by having a variety of different weaknesses between forms.''
|-
| align=center | '''DS''' ''Yoshi's Island DS''
|-
|}

===Information from Mario Sports Games===
====''[[Mario Superstar Baseball|Mario Superstar Baseball Information]]====
*'''Type:''' Technique
*'''Starting Team Captain:''' [[Wario]]
*'''Status:''' Player
*'''Stats:'''
**'''Batting:''' 3/10
**'''Pitching:''' 8/10
**'''Fielding:''' 2/10
**'''Running:''' 4/10
*'''Player Profile:'''
**'''Strength:''' Pitching
**'''Special Talents:''' Super Jump
**'''Trajectory:'''
***'''Field:''' Center
***'''Height:''' Normal
*'''Star Pitch:''' Curveball
*'''Star Swing:''' Center
*'''Sweet Spot:''' The Boo face on the bat
*'''Compatible Relationships:''' [[Wario]], [[Magikoopa]], [[King Boo]]
*'''Bio:''' ''"Bowser's underling ghost. Behind the scary face lies a very shy soul. Look most Boos in the eyes and they'll cover their faces...but turn around and they'll attack you! Boos confuse their enemies by flickering in and out of the visible realm, appearing at inconvenient times."''

====''[[Mario Hoops 3 on 3]]====
*'''Type:''' Technique
*'''Special Shot:''' [[Thriller Dunk]]
*'''Letter to Tap:''' B

===''[[Mario Party DS]]''===

*Trophy: This ghostly creature is a common sight. Do you think he's a nice guy? Ask him. He's right behind you.

===''Mario Party 7'' Info===
[[Image: DB and Boo.JPG|thumb|Boo and [[Dry Bones]] in ''Mario Party 7''.]]
*'''Partner:''' [[Dry Bones]]
*'''Special Orb:''' [[Magic Orb|Magic/Surprise]]

== Foreign Names ==
{{Foreignname|
|Jap=テレサ<br />''Teresa''
|JapM=To be shy
|Ger=Buu Huu
|GerM=Boo Hoo
|Swe=Boo-Hoo
|SweM=-
|Kor=부끄부끄<br />''Bukkeubukkeu''
|KorM=
}}

==Quotes==
*''Check those bubbles coming out of his nose!'' &ndash; ''[[Super Mario RPG|SMRPG]]
*''Time for the six o' clock Boos!'' &ndash; ''[[Luigi's Mansion]]
*''Do you want me to give you a [[Mushroom]], Toad? '' [[Mario Party 5]]
*''Let's battle it out, [[Waluigi]]! '' [[Mario Party 8]]
*''Ahhh! [[Bowser]]'s got ME!!! '' [[Mario Party DS]]
*''Dry Bones, don't push me on the ground. I said CUT IT OUT! [[Mario Party 7]]
*''Whoooooooooo! I ruuuuuuuuuuuuuuuuuule!!!'' &ndash; ''[[Mario Party 6]]
<div style="clear: both"></div>

==Character Artwork==
<center><gallery>
Image:Boos.jpg|<center>''[[Super Mario Bros. 3]]
Image:BooY.jpg|<center>''[[Yoshi (game)|Yoshi]]
Image:Bigboo.gif|<center>''[[Yoshi's Story]]
Image:BooTennis64.PNG|<center>''[[Mario Tennis]]
Image:MKSCBoo.jpg|<center>''[[Mario Kart Super Circuit]]
Image:MP5Boo.PNG|<center>''[[Mario Party 5]]
Image:PM2_Boo.PNG|<center>''[[Paper Mario: The Thousand-Year Door]]
Image:MPTBoo.PNG|<center>''[[Mario Power Tennis (GCN)|Mario Power Tennis]]
Image:MP6_Boo.jpg|<center>''[[Mario Party 6]]
Image:MP6_Boo2.jpg|<center>''[[Mario Party 6]]
Image:MPA_Boo.jpg|<center>''[[Mario Party Advance]]
Image:DB and Boo.JPG|<center>''[[Mario Party 7]]
Image:MP7Boo.png|<center>''[[Mario Party 7]]
Image:BooHoops.PNG|<center>''[[Mario Hoops 3 on 3]]
Image:YIDS_Boo.jpg|<center>''[[Yoshi's Island DS]]
Image:BooMSC.PNG|<center>''[[Mario Strikers Charged Football]]
Image:BooMP8Official.png|<center>''[[Mario Party 8]]
</gallery></center>

== References ==
<references/>

== Trivia ==
*Boo's ''Mario Strikers Charged Football'' outfits resembles the [[Spooky Speedster]]'s outfit.
*In ''[[Mario Kart Wii]]'', an image of Boo and [[Dry Bones]] can be seen on a billboard on the [[Bowser Castle#Mario Kart Wii|Wii Bowser's Castle]] track.
*In [[wikipedia:Sonic Adventure 2|Sonic Adventure 2]], there are enemies called Boom Boos. They were created as a mockery of the Mario series' Boos.
*In the Mario Party multi-series (all shows), Toad calls Boo 'Boo Buddy' and Boo calls Toad 'Toad Buddy'.
<br clear=all>
{{MP Players}}
{{MG}}
{{PiT}}
{{Hotel Mario}}
{{Super Mario Bros. 3}}
{{SMW}}
{{SM64}}
{{Yoshi's Island DS}}
{{SPP}}
{{NSMB}}
{{The Adventures of Super Mario Bros. 3}}
{{Super Mario World TV}}
{{Mario Strikers Characters}}
{{Hosts}}
{{MSB}}
{{MK}}
{{MT}}
{{Yoshi}}
{{Boos}}
{{SMSS}}
{{SML2}}
{{Mario Super Sluggers}}

[[Category:Species]]
[[Category:Major Races]]
[[Category:Enemies]]
[[Category:Mario Kart Items]]
[[Category:Undead]]
[[Category:Mario Party Characters]]
[[Category:Playable Characters]]
[[Category:Hosts]]
[[Category:Unlockables]]
[[Category:Yoshi Species]]
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[[Category:Mario Superstar Baseball Characters]]
[[Category:Super Smash Bros. Trophies]]
[[Category:Super Smash Bros. Stickers]]
[[Category:Boos]]
[[Category:Paper Mario Series Enemies]]
[[Category:Tricky Characters]]
[[Category:Technical Characters]]
[[Category:Mario Hoops 3-on-3 Playable Characters]]
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[[Category:Mario Super Sluggers Playable Characters]]
[[Category:Super Mario Bros. 3]]
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