The Grim Adventures of Billy and Mandy Season 6 Episode 4 Modern Primitives / Giant Billy and Mandy All Out Attack

Modern Primitives: A caveman thaws out of a block of ice and Billy teaches him to adapt to the modern world. After he shows everyone the caveman at school, the caveman goes on a rampage because of the modern world itself. Will anyone or anything stop him?

Giant Billy and Mandy All-Out Attack: Grim transports Billy and Irwin to mystical Japan and there they watch giant monsters fight. A monster comes after Grim tries to zap Billy and the monster's arch-enemy comes along too. The monster tries to defeat him meanwhile Mandy reads a letter from Billy and goes to mystical Japan to beat up the cat monster and Billy.