Fun Song Factory/Regular Show

Cast

 * Beavis (from Beavis and Butt-Head) as Rigby
 * Butt-Head (from Beavis and Butt-Head) as Mordecai
 * The Grinch (from Dr. Seuss) as The Black Hole Monster
 * The Hulk (from The Incredible Hulk) as the Moon Monster
 * Pac-Man (from Pac-Man) as Lemon Chef
 * Dig Dug as Dig Champs
 * The Were-Rabbit (from Wallace and Gromit: The Curse of the Were-Rabbit) as The British Taxi
 * Rudy (from Ice Age 3: Dawn of the Dinosaurs) as Snowballs the Ice Monster
 * Lolly Poopdeck (from The Marvelous Misadventures of Flapjack) as Muscle Man