Barf Kingdom is a kingdom very briefly mentioned by Princess Bubblegum in the comic Marceline and the Scream Queens Issue 2. Very little is known about it. Princess Bubblegum mentions it when she sees the state of the campsite she and the rest of the Scream Queens were sleeping at. She says, "This place looks like Barf Kingdom--minus all the majesty!" This implies that even though Barf Kingdom is very dirty and disgusting, it is still majestic. It is unknown whether Barf Kingdom is a real kingdom, or if Princess Bubblegum just made it up.