Grim Adventures of Billy & Mandy - Gamecube Up to four players can use a multitude of weapons in destructible arenas like the Desert of Doom and the Underworld In Mission Mode, you'll play 45 missions where players can unlock new weapons and characters - like Hoss Delgado and the Boogey Man Players can smash objects, destroy environments and battle in eight fully interactive arenas, from Billy's house to the Afterlife to Toadblatt's Coliseum Play as one of fifteen characters from the show including Billy, Mandy, Grim, Irwin, Hoss Delgado and many more