Boos are one of the non-playable characters in Lego Dimensions 2: The Rise of Enoch, from Nintendo's subfranchise Super Mario.
Boos (also known as Boo Buddies in Super Mario World) are recurring and common enemies in the Mario series. They are ghosts that were introduced in Super Mario Bros. 3. In their first appearance, they appeared as fortress enemies, and since then have featured as a playable character in numerous Mario titles. There have been many variations of Boos introduced throughout Mario's adventures. These include King Boo, Pink Boo, Boolossus, Bomb Boo, and Big Boo.