King Boo is the leader of the Boos and the archenemy of Luigi. He appears in Luigi's Mansion and it's sequels Luigi's Mansion: Dark Moon and Luigi's Mansion 3 as the main antagonist. He is sinister, clever, and determined. His powers include causing objects to appear out of thin air, breathing fire, shooting ice, strong tornado-like breath, and the ability to jump incredibly high. He released all of the portraits' ghosts and trapped Mario behind a painting.