Bowser Jr. (known as Koopa Jr. (クッパJr. , Kuppa Junia) in Japan) is a video game character who appears in Nintendo's Mario franchise as an antagonist. He is the son of the series' primary and main antagonist, Bowser. Since his debut in Super Mario Sunshine, Bowser Jr. has been a recurring character in the Mario series and has been made playable in several spin-offs, such as Mario Superstar Baseball, Mario Strikers Charged, and Super Smash Bros. for Nintendo 3DS and Wii U and Super Smash Bros. Ultimate. He shares his father's desire to kidnap Princess Peach and defeat Mario. Bowser Jr. is generally not considered one of the Koopalings.