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LM 3DS Art - Boo.png
Official artwork of a Boo from Luigi's Mansion (3DS).
Universe Mario
Debut Super Mario Bros. 3 (1988)
Smash Bros. appearances Melee
Most recent non-Smash appearance Tetris 99 (2021, cameo via update)
Console/platform of origin Nintendo Entertainment System
Species Boo
Place of origin Mushroom Kingdom
Created by Shigeru Miyamoto
Designed by Shigeru Miyamoto
Article on Super Mario Wiki Boo

Boos (テレサ, Teresa) are enemies from the Mario series.


A shy Boo in Super Mario Bros. 3.

Boos made their debut in Super Mario Bros. 3 as a common enemy, and has become a common enemy in later Mario games. They are white, spherical ghosts with short stubby arms and a short stubby tail. They have beady black eyes, a fanged mouth, and a large tongue they stick out occasionally.

Boos are known for appearing in Ghost Houses and other haunted levels in the Mario series. When the player is facing away, they will pursue the player and damage them on contact. When the player is facing them, they stop their pursuit, cover their bashful faces, and becomes intangible. In any case, they cannot be defeated under normal circumstances (e.g. jumping on them); however, they can be defeated by running into them under the effect of the Super Star or throwing a Grab Block at them. In later Mario games, they can disappear momentarily when hit by fireballs or Tanooki Mario's tail whips.

Boos have become a recurring item in the Mario Kart series. When used, it will turn the player temporary invisible while the Boo steals an item from another player. If there is no item to steal, however, it will return with a Super Mushroom.

Prominent members of the Boo species include King Boo, the king of the Boos and the main antagonist of the Luigi's Mansion series; and Lady Bow, a female Boo and one of Mario's party members in Paper Mario.

In Super Smash Bros. Melee[edit]


Boo trophy from Super Smash Bros. Melee.
Boo's trophy in Melee
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 Mario Bros. 3 (2/90)

In Super Smash Bros. Brawl[edit]

As a background character[edit]

Boos appear as background characters in the Luigi's Mansion stage, only appearing briefly from the rubble of the mansion when part of it is destroyed.


Boo trophy from Super Smash Bros. Brawl.
Boo's trophy in 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.
NES: Super Mario Bros. 3
Nintendo DS: Yoshi's Island DS


The Boo sticker can be obtained as a challenge reward by hitting Sandbag 900m/300ft in the Home-Run Contest.

Name Game Effect Fighter(s)
Boo Mario Tennis AttackThrowing+014TypeIcon(Throwing).png Attack +14 All charactersRandomHeadSSBB.png
Brawl Sticker Boo (Mario Tennis).png
(Mario Tennis)

In Super Smash Bros. 4[edit]

As a background character[edit]

Boo sprite on Luigi's Mansion
A Boo that appears from breaking down a section of the Luigi's Mansion stage.

Boos return as background characters in the returning Luigi's Mansion stage in Super Smash Bros. for Wii U.

In Smash Tour[edit]

Item in Smash Tour.

Boo appears as a red trophy item. When used, it allows the fighter to start the battle invisible.


The Boo trophy appears in both versions. In Super Smash Bros. for Wii U, it is part of the Super Mario Bros. 2 & 3 Trophy Box.

NTSC Don't look so surprised—even some ghosts are shy! It's like a game of Red Light Green Light: your face means stop, and the back of your head means go. So be very careful if you turn your back. Boo also shows up in the Mario Kart series, making your kart invisible to other racers.
NES: Super Mario Bros. 3 (02/1990)
3DS: Luigi's Mansion: Dark Moon (03/2013)
PAL Even ghosts can be shy, and these guys are so shy, they can't even attack you if you're watching! It's kind of like they're always playing a ghostly game of statues. Just don't turn your back on them and you'll be all right! That said, they make fine allies in the Mario Kart series, where they can turn you invisible for a while.
NES: Super Mario Bros. 3 (08/1991)
3DS: Luigi's Mansion 2 (03/2013)

In Super Smash Bros. Ultimate[edit]

As a background character[edit]

Boos return as background characters in the returning Luigi's Mansion stage in Super Smash Bros. for Wii U.


Boo also appears as a Novice-class primary spirit.

In Adventure Mode: World of Light, Boo is presumably one of the countless spirits captured by Galeem during his takeover of the universe. After Galeem's defeat, Dharkon takes control of Galeem's spirits, including Boo. Boo's spirit is located in the Dracula's Castle sub-dungeon of The Dark Realm.

Boo's Spirit Battle uses a Kirby puppet fighter and is fought on the Mushroom Kingdom U stage's Slide Tower layout. During the battle, Kirby frequently shields and turns invisible, referencing how Boos cannot be defeated under normal circumstances and turns invisible when faced by the player.

No. Image Name Type Class Slots Base Power Max Power Base Attack Max Attack Base Defense Max Defense Ability Series
SSBU spirit Boo.png
3 807 4035 343 1715 464 2320 Can Be Enhanced at Lv. 99 Super Mario Series

Names in other languages[edit]

Language Name
Japan Japanese テレサ, Teresa
UK English Boo
France French Boo
Germany German Buu Huu
Spain Spanish Boo
Italy Italian Boo
China Chinese (Simplified) 害羞幽灵, Hàixiū Yōulíng
Taiwan Chinese (Traditional) 害羞幽靈, Hàixiū Yōulíng
South Korea Korean 부끄부끄, Bukkeubukkeu
Netherlands Dutch Boo
Russia Russian Бу
Portugal Portuguese Bu