Orbulon is a 2,003-year-old, humanoid alien who came to Diamond City with his Space Bunnies to take over the world. However, his pig-like spaceship, the Oinker, crashed in Diamond City, and so he just settled down there, and his views eventually changed. He became employee in Wario's Game Company, Wario Ware Inc.
Later Orbulon lost his Oinker in space, so he captured a taxi (and the drivers Dribble and Spiz). The taxi was made by Dr. Crygor and was able to fly to space, allowing Orbulon to get his Oinker back.