Bowser Jr. was one of Bowser's minion and a son. He debuts in Super Mario Sunshine through New Super Luigi U. Rex debuts in Super Mario World through Super Princess Peach because he's a dragon with shoes.Beach Koopa is a naked version of Koopa Troopa with an undershirt without a shell.He debuts in Super Mario World just like Rex, and through Paper Mario.And Foo debuts in NEW Super Mario Bros. Wii through New Super Luigi U.
