Princess King Boo

About

Princess King Boo, also known as King Boo, is a recurring character in the Mario series. He is the primary antagonist of the Luigi's Mansion series. He is a large, blue, ghostly Boo with a crown and a white mustache. He is known for his mischievous and cunning nature. He often kidnaps Princess Peach and other characters, leading to the Mario brothers' involvement. He has appeared in various games including Luigi's Mansion, Mario Kart, and Mario Party.