Editing Boo

{{Species-infobox

|title=Boo

|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]]

|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]]<br>[[The Creepy Steeple Boo]]<br>[[Spooky Speedster]]

|latest_appearance=''[[Mario Super Sluggers]]''

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

A '''Boo''' 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 "hands" of some sort. [[Goombario]]'s [[tattle]] for [[Igor]] in ''[[Paper Mario]]'' states, ''"He probably was a merchant before he became a Boo"''. Therefore, Boos may be a type of ghosts who were once living. While they have been enemies for most of their history, recently they became playable characters and some even allied to [[Mario]]. Boos can be defeated by bringing them into a source of light.

== The Appearance of a Boo ==

[[Image:Boo_History.PNG|frame|left|''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, except that it's been sped up several times<ref>[http://www.youtube.com/watch?v=crx21K5uMIk Video comparison of Boo and Bowser's laughs]</ref>. Although most species of Boo will cover their faces and become intangeable when looked at, they will often sneak behind their victim and strike when their back is turned. Due to their ghostly abilties, 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. 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 myserious 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. From the large gatherings of Boos found in various locations, it can be assumed that Boos know about this ability, and purposely take advantage of this power to overwhelm, their victims. When a Boo is found alone, such as the [[Creepy Steeple Boo]] in ''[[Paper Mario: The Thousand-Year Door]]'', one may assume that there are many others waiting nearby.  

Despite being ghosts, Boos still have predators, the only known predator of Boos being the [[Clubba|Clubbas]], which seem to highly fancy them. This is first seen in ''Paper Mario'', when [[Tubba Blubba]] began devouring Boos, but this particular example may have been his revenge for the countless times the ghosts scared him.  

=== 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 is 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.  

=== System of Government ===

The Boo system of government is a monarchy, in which the monarch has supreme power.  Typically, the Boo monarch is referred to as a ''king'', with the best example being the king of Boos himself, [[King Boo]]. Next in the line of government, of course, are the nobles, one example being the young [[Lady Bow]].  Following the nobles is unknown, but until Lady Bow and King Boo were introduced into the ''Mario'' games, Big Boos and the [[Bigger Boo]] have been seen to have high authority. Boo leaders generally have personal ownership over a large mansion, with the size corresponding to the amount of power the leader has.  This may range from simply a large Ghost House for a Big Boo to a [[Luigi's Mansion (place)|vast mansion]] for King Boo.

Lower class Boos tend to have their homes in wastelands such as Gusty Gulch. They are much dirtier than the clean middle and upper class Boos.

=== Allegiance ===  

Though most Boos tend to side with the [[Koopa Troop]], 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).

==Appearances==

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

[[Image: SMB3Boo.jpg|thumb|A Boo's artwork for ''Super Mario Bros. 3''.]]

In ''[[Super Mario Bros. 3]]'', Boos 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.

===''Super Mario World===

[[Image:SMWBoo.png|thumb]]

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 a face at you. 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]].

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.

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

Boos appeared to antagonize [[Yoshi]] again 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.

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

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.

===''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]].

===''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. After collecting 12 Power Stars, Mario is able to go to the Haunted Mansion. A portal to this mansion is hidden inside a Big Boo. After Mario ground pounded it once, a small cage falls out of him, and Mario can jump in. He ends up at the Big Boo's Haunt, where he has to perform 6 Tasks, for 6 Power Stars. 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 an item like commonly a [[Coin]] or a [[Blue Coin]] as this was an add-on to the Boos' physics.

In ''[[Super Mario 64 DS]]'', Boos still kept the same role they did before. 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 Big Boo's cackle, he finally made it to a room with a mirror at the end of it. He then has to battle Big 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. The "Big Boo" that captured Luigi, was actually [[King Boo]].

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

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

Boos reappear in ''[[Yoshi's Story]]'' in Stage 5-3: [[Ghost Castle]]. They do not act differently, although they are slightly bigger. They also appear in 3-D for the first time.  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]], [[Little Boo]], and others.  The [[Yoshi Sewers|sewer levels]] also had ghost platforms, along with a blue variant called a [[Boo Buddy]].

===''Paper Mario===

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]].

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

While Boos not appeared in [[Super Mario Bros.|the original]], a Boo appeared in ''[[Super Mario Bros. Deluxe]]''. It was the main enemy in the "You VS. Boo" mode. The goal was too came to the end before the Boo. Sometimes, a green, red, or Black Boo appeared instead.

===''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.

===''Super Mario Sunshine===

[[Image:booshine.jpeg|thumb|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 [[FLUDD]], 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 Mario's are very pale, while the real one is dark blue. Their appearance had just one change, they had blue circles surrounding there black pupils (probably because of the extreme heat of Isle Delfino).

===''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 Boo's were unknowingly aiding [[Bowletta]], thinking she was the actual Bowser.

===''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]]. When you go back into the main room, the first boo is still there. He asks if you are 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. If Mario Spin Attacks them, they merge into the [[Atomic Boo]]. If he stays still too long they will grab him and throw him out of the steeple. 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]].

===''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 he were to lose a life.

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

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 left eye, it will attack Mario, but if it shows its right 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. Dark Boos also return in the game, found at the [[Gritzy Caves]].

===New Super Mario Bros.===

Boos also appeared in ''[[New Super Mario Bros.]]''. They were found mainly in Ghost Houses, found throughout the game. The game also introduced the [[Balloon Boo]], which were normal Boos who could suck up the air, and become much bigger.

===''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.

===''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 Paper Mario===

{{Catch Card #1

|image=[[Image:92. Boo Card.JPG]]

|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.

===[[Mario Party (series)|''Mario Party'' series]]===

Boo also regularly appears in the 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 & [[Mario Party 6]] and [[Dry Bones]] in [[Mario Party 7]] & [[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.

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). If a Boo catches sight of Mario while he is in the [[Boo Suit]], they become attracted to him and follow him for an unknown reason (it seams they fell in love with him by the hearts around their heads). 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 it's tongue and hammer-tossed into statues and enemies. Also they look very similar to a boo on [[Princess Daisy]]'s team.

[[Image: Boo.jpg|thumb|left|A Boo used as a item in the ''Mario Kart'' series.]]

In the ''[[Mario Kart]]'' series, the Boo is used as an offensive and defensive item. When activated, the Boo selects a random target, steals his item and gives it to the player, then makes the player invisible and invulnerable for a short period of time. If no other players have an item, the user will only become invisible and invulnerable.  

In [[Mario Kart Arcade GP]] and [[Mario Kart Arcade GP 2]] Boo is an item, however a ghost named [[Blinky]] (from the Pac-Man series) is playable.

===''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.

===Spin-Off Series===

[[Image: Booparty4.jpg|thumb|right|The Sorcerer Boo from ''Mario Party 4''.]]

Boo appears as a playable character in ''[[Mario Party 5]]'', ''[[Mario Party 6]]'', ''[[Mario Party 7]]'', ''[[Mario Party 8]]'', ''[[Mario Golf: Toadstool Tour]]'' (must be unlocked), ''[[Mario Superstar Baseball]]'', ''[[Mario Power Tennis]]'', ''[[Mario Hoops 3 on 3]]'', and ''[[Mario Strikers Charged]]''.

In ''[[Mario Party 3]]'', Boo was [[Yoshi]]'s assistant and partner.  In ''[[Mario Party 4]]'', a Boo wearing a wizard costume was the host of a music-themed board. In the first four ''[[Mario Party (series)|Mario Party]]'' titles, Boo has stolen coins and Stars from characters. From ''[[Mario Party 5]]'' onward he was a playable character, so [[Chain Chomp]] took over for the fifth game. In later Mario Party titles, Red Boos perform the coin/star-stealing duties. Starting in ''[[Mario Party 2]]'', stealing coins cost 5 coins (in ''[[Mario Party]]'' it was free). However, stealing Stars is always 50 coins.

In ''Mario Party'', there is an item called a [[No Boo]]. When it is used, Boo is no longer seen on the game board.

Boo also appeared in several mini games in [[Mario Party DS]], such as [[Boo Tag]].

==Appearances in Other Media==

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

===Cartoons===

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'.

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]].

===Publications===

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.

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]].

==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.

*[[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.

*[[Bigger Boo]] &ndash; ''[[Super Mario World 2: Yoshi's Island]]

*[[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]]

*[[Stanley the Boo|Stanley]] &ndash; ''[[Paper Mario]]

*[[Spooky Speedster]] &ndash; ''[[Super Mario Galaxy]]

*[[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]]

==Boo's Stats and Tattle Information, ''Paper Mario: The Thousand-Year Door==

|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]]

|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

*'''Magic Defense''' 120

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

*'''HP''' 43

*'''Magic Defense''' 24

== Trophy Information from ''[[Super Smash Bros. Melee]]'' ==

{{SSBtrophy

|image=Trophy209.PNG

|legend=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.

== Trophy Information from ''[[Super Smash Bros. Brawl]]'' ==

''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.''

===''[[Mario Superstar Baseball|Mario Superstar Baseball Information]]===

*'''Starting Team Captain:''' [[Wario]]

**'''Running:''' 4/10

*'''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 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="Boo-Hoo"

==Quotes==

*''Wanna play GameBoo Advance?'' &ndash; ''[[Luigi's Mansion]]

*''Check those bubbles coming out of his nose!'' &ndash; ''[[Super Mario RPG|SMRPG]]

*''Hi, I'm Luigi! I mean, Booigi!'' &ndash; ''[[Luigi's Mansion]]

*''Time for the six o' clock Boos!'' &ndash; ''[[Luigi's Mansion]]

==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]]

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]]

Image:BooMP8Official.png|<center>''[[Mario Party 8]]

</gallery></center>