A Tail Boo
|Ally||Bowser, Koopa Troop|
|Debut Appearance||Super Mario 3D Land|
|Latest Appearance||Super Mario 3D Land|
Tail Boos are a new type of Boo found in Super Mario 3D Land. They behave just like normal Boos expect when Mario or Luigi turns to face one, they will swing their tail before they hide their face. Other than this they chase Mario or Luigi while their backs are turned.