King Boo

Luigi's nemesis. First appeared in Luigi's Mansion (2001).

Luigi saves Mario, Peach, and all his friends from King Boo.

by mrdrmaster March 28, 2021

Mister King Boo

A Man that is beyond his own time.

Don't you wish you could be Mister King Boo?

by Huh? December 3, 2004

king boo

A big black guy named Diamond.

Guy: hey where is diamond?
Guy 2: who?
Guy 1: King Boo!!
Guy 2: Oh!! He's over there.

by Oak13y January 12, 2017