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.

Sub-Species

 * Dark Boo: A purple Boo that's found in the Poshley Sanctum.

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

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.

Atomic Boo's Stats, Paper Mario: The Thousand Year Door
HP 40, Attack 4, Defense 0

That's an Atomic Boo. It's a giant Boo made up of a ton of smaller Boos. This thing will try to smoosh us. It can also split up and send hundreds of Boos at us. And, when we attack, we might get so scared that we get confused or can't move. I sure wouldn't want to see this thing standing behind me in the middle of the night... Creeeeeepy...

Dark Boo's Stats, Paper Mario: The Thousand Year Door
HP 8, Attack 5, Defense 0

That's a Dark Boo. Purple just looks... so wrong. These Boos are SO creepy. Its HP and Attack are high, but they're just like ordinary Boos otherwise. So, just attack it like a normal Boo. Get it before it turns invisible!

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