Bowser, also known as King Koopa, is a video game character and the primary antagonist of Nintendo's Mario series. In Japan, the character is known as Koopa (クッパ Kuppa?)[1] and bears the title of Daimaō (大魔王?, lit. "Great Demon King").[2]
Bowser is the leader and most powerful of the Turtle-like Koopa race and is Mario's archnemesis beginning with his first appearance, in the game Super Mario Bros. His ultimate goals are to marry Princess Peach, defeat Mario, and conquer the Mushroom Kingdom. Since his debut, he has appeared in almost every Mario series game.