King Boo - Super Mario Wiki, the Mario encyclopedia

King Boo is the leader of the Boos and ghosts, the main antagonist of the Luigi's Mansion series, and the arch-nemesis of Luigi. He is also an ally of Bowser and has aided him in his various schemes. He has succeeded in capturing Mario in the Luigi's Mansion games, as well as capturing Toads, Professor
King Boo is the leader of the Boos and ghosts, the main antagonist of the Luigi's Mansion series, and the arch-nemesis of Luigi. He is also an ally of Bowser and has aided him in his various schemes. He has succeeded in capturing Mario in the Luigi's Mansion games, as well as capturing Toads, Professor

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