King Boo is the leader and king of the Boos, the ruler of the Paranormal Dimension, the archnemesis of Luigi, and the main antagonist of the Luigi's Mansion series. He is sinister, clever, and determined in the Luigi's Mansion series. King Boo debuted in the first Luigi's Mansion game as the main antagonist and foe to Luigi and was seen in the beginning of Luigi's Mansion where he ended up trapping Mario in a painting. His powers include causing objects to appear out of and disappear into thin air, and control over fire, ice, and lightning attacks, making him a terrifying and dangerous foe. King Boo consists to be the main antagonist in most Mario series.