Boo

Boo is a type of ghost in the Mario series. They first appeared in Super Mario Bros. 3, but in Super Mario World, there were Ghost Houses, which contained many Boos.

The Boo's Mansion in Paper Mario was a bigger version of the Ghost Houses, which had many puzzles involving Boos in it. After solving these puzzles, Bow, the princess of the Boos, joins Mario's team. In Paper Mario: The Thousand Year Door, she and Bootler are on vacation in Poshley Heights after Mario and his teammates defeat the Shadow Queen.

In Luigi's Mansion, there are 66 Boos which Luigi must suck up in his Poltergust 3000. There are 50 regular Boos, 15 others make up Boolossus, and there is also King Boo.

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 you, and then makes you invisible and invulnerable for a short period of time.

In Paper Mario: The Thousand Year Door, the Boos live in a tower called Creepy Steeple. When Mario Spin Attacks them, they merge into the Atomic Boo.

A Boo from Paper Mario named Stanley Ghast appears in Mario Party 5, Mario Party 6, Mario Party 7, Mario Golf: Toadstool Tour, Mario Superstar Baseball, and Mario Power Tennis.

Notable Boos

 * Bow - Paper Mario
 * Bootler - Paper Mario
 * Big Boo - Super Mario World
 * Bigger Boo - Yoshi's Island
 * King Boo - Luigi's Mansion
 * Stanley - Paper Mario

Tools

 * Boo's Sheet
 * Fright Bomb

Boo's Stats, Paper Mario: The Thousand Year Door
HP 7

Attack 3

Defense 0

Atomic Boo's Stats, Paper Mario: The Thousand Year Door
HP 40

Attack 4

Defense 0

Dark Boo's Stats, Paper Mario: The Thousand Year Door
HP 8

Attack 5

Defense 0

Lil' Boo's Stats, Super Mario RPG
HP 66

Attack 120

Defense 20

Magic Attack 74

Magic Defense 120

The Big Boo's Stats, Super Mario RPG
HP 43

Attack 18

Defense 0

Magic Attack 18

Magic Defense 24

Quotes
Wanna play GameBoo Advance? - Luigi's Mansion

Check those bubbles coming out of his nose! - SMRPG

''Hi, I'm Luigi! I mean, Booigi!'' - Luigi's Mansion

Time for the six o' clock Boos! - Luigi's Mansion