Bowser

Bowser a.k.a. King Koopa or Lord Bowser is the King of Koopas who kidnaps everytime Princess Peach and locked her into a cage, he wants to capture Daisy, Mario, Luigi, Wario and Waluigi. But his plans her defeated everytime by Mario and Luigi who saved Peach, Daisy and the mushroom guy. He have Larry Koopa, Morton Koopa Jr., Ludwing von Koopa, Roy Koopa, Iggy Koopa, Lemmy Koopa, Wendy O. Koopa and the eight children Bowser Jr. to rule the Mushroom Kingdom. In the last part of Mario's Quest, he betrayed Wario and Waluigi and attacked them by using his anger.