Boo

Boo
Official artwork of a Boo from Luigi's Mansion (3DS).
Universe	Mario
Debut	Super Mario Bros. 3 (1988)
Smash Bros. appearances	Melee Brawl SSB4 Ultimate
Most recent non-Smash appearance	Super Mario Party Jamboree (2024)
Console/platform of origin	Nintendo Entertainment System
Species	Boo
Gender	Unknown
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.

Origin

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

Trophy

Boo's trophy in Melee

Boo

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

As a background character

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.

Trophy

Boo's trophy in Brawl

Boo

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.

: Super Mario Bros. 3

: Yoshi's Island DS

Sticker

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+014 Attack +14	All characters

Boo (Mario Tennis)

In Super Smash Bros. 4

As a background character

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

Item in Smash Tour.

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

Trophy

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.

Boo's trophy in Super Smash Bros. for Nintendo 3DS

Boo's trophy in Super Smash Bros. for Wii U

Boo

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.

: Super Mario Bros. 3 (02/1990)

: Luigi's Mansion: Dark Moon (03/2013)

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.

: Super Mario Bros. 3 (08/1991)

: Luigi's Mansion 2 (03/2013)

In Super Smash Bros. Ultimate

As a background character

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

Spirit

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	Max	Base	Max	Base	Max	Ability	Series
48		Boo		★	3	807	4035	343	1715	464	2320	Can Be Enhanced at Lv. 99	Super Mario Series

Names in other languages

Language	Name
Japanese	テレサ, Teresa
English	Boo
French	Boo
German	Buu Huu
Spanish	Boo
Italian	Boo
Chinese (Simplified)	害羞幽灵, Hàixiū Yōulíng
Chinese (Traditional)	害羞幽靈, Hàixiū Yōulíng
Korean	부끄부끄, Bukkeubukkeu
Dutch	Boo
Russian	Бу
Portuguese	Bu