Bowser, Mario's arch-nemesis, is the Leader of the Koopa Troop, and the King of the Koopas. Bowser has attempted very many times(almost too many to count) to capture Princess Peach and take over the Mushroom Kingdom. And one time he even attempted to take over the entire universe! Since created, Bowser has appeared in almost every single Mario game, and he's the main rival in almost all of them. He does not come into the Super Smash Bros. series until Melee, but he is one of the main characters. Bowser has many minions and followers, such as Goombas, Koopas, and Bullet Bills. He shoot fire out of his mouth, and has a spiky shell.