Knight

Description
The Knight is a character who appears in Muscle Woman. He apparently built "castles" out of moldy and dirty mattresses in the creek bed in The Park. It was Mordecai and Rigby's job to get rid of him (originally Muscle Man's job). Later, when Starla was destroying The Park, The Knight stepped out and opened up a teleportation hole, and headed back to a place that seemed to have a real castle, so it seems he actually was a real knight from the past but somehow is in the future.

Appearance
He wears a potato sack as a shirt. It is held together by a string and you can see his underpants. He wears socks but no shoes. He has a cardboard sword and armor, and he wears a cardboard "helmet" that says Oats on it.