
Not much is known about the Boo ghosts that appear in the Mario games. This is not very surprising because they are ghosts. However, with Halloween around the corner, various fan theories are beginning to sprout regarding Boo and why these ghosts tend to cover their faces when they are confronted. Unlike your typical ghost, Boo is a cute little loveable blob that appears in the Mario games franchise. The Boo ghost trails closely behind the player and could even kill the player if they don’t face Boo. However, what’s really intriguing about Boo is that when confronted, the ghost quickly covers his face.