The Grim Adventures of Billy and Mandy: Super Zero/Sickly Sweet

"Super Zero" Billy wants to be a superhero like the ones on television and asks Grim to turn him into one. With Billy gone into space to stop an evil empire, Grim has to help Billy's father to build a shed. "Sickly Sweet" Grim and Billy give Mandy a mask that will turn her into a monster if she is mean at any time. Very quickly she turns into a hideous beast, much to the delight of Grim and Billy.