Bowser Jr.

Bowser Jr. is the secondary antagonist of Nintendo's Mario franchise. He is the only biological son of Bowser and serves as the heir to his throne. Since his debut in Super Mario Sunshine, he has helped his father kidnap Princess Peach and battle against the Mario Bros. He also appears as a playable character in in Spin-off games like the Mario Kart series or Mario Strikers Charged. Bowser Jr. only wants to do his father's evil will.