Adventure Time - S01 - Ep 12

After Marceline the Vampire Queen visits Finn and Jake at their tree fort she informs them that she is moving in and kicking them out.

Jake's imagination literally runs wild, coming to life and bringing many dangers into the tree house.

Finn creates a robot to continuously throw pies at Jake but unexpectedly imbues it with a soul.

Jake is accused of being a horrible monster that has been terrorizing the locals. Soon, Jake himself is unsure if he is or isn't the monster.