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	Clubhouse Games: 51 Worldwide Classics (2020, cameo)
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

Boo (テレサ, Teresa) is a species of ghost from the Mario series.

Origin

A shy Boo in Super Mario Bros. 3.

Boos debuted in Super Mario Bros. 3, and have been common enemies in the Mario games ever since. They often appear in Ghost Houses and other haunted places. They float in the air pursuing Mario and damage him on touch, but they stop when they're looked at, being too shy to move. In Luigi's Mansion, Boos serve a major role as enemies in the mansion, hence their stage cameo beginning in Brawl. In some Mario Kart games, Boos act as items that make the player invisible; this is likely the basis for their function as a Smash Tour item.

In Super Smash Bros. Melee

Trophy

Boo 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 in the background on Luigi's Mansion, appearing briefly when part of the mansion is destroyed.

Trophy

Boo 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 (with a tennis racket) is obtained as a prize for hitting Sandbag 900m/300ft in the Home-Run Contest.

Name	Game	Effect	Characters
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 reappear on Luigi's Mansion in Super Smash Bros. for Wii U.

The Boo item in Smash Tour.

In Smash Tour

Boo appears as a red tour item. When selected in a battle, it allows the user to start a battle invisible.

Trophy

Boo trophy in Super Smash Bros. for Wii U.

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

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.

Even ghosts can be shy, and these guys are so shy, they can't even attack you if you're watching! I'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 alright! That said, they make fine allies in the Mario Kart series, where they can turn you invisible for a while.

: Super Mario Bros. 3 (02/1990)

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

In Super Smash Bros. Ultimate

As a background character

Boos reappears in the background of Luigi's Mansion.

Spirit

No.	Image	Name	Type	Class	Ability	Series
48	File:Boo Spirit.png	Boo		★	Can Be Enhanced at Lv. 99	Super Mario Series