King Boo (EntityTopic, 7)
From Compile Worlds
King Boo is a King of Boos. He commands them as a subject of Bowser, though at times he's seen to act as an independent antagonist to Luigi. Regardless, he also appeared as a boss in Super Mario Sunshine, and then continued to appear in spin offs as Petey Piranah's partner, though eventually he started appearing without the plant. He seems to have some gambling issues, as he physically attaches himself to a Slot Machine in Sunshine, and then has the ability to get ALL items in Mario Kart Double Dash.