Metal Mario often plays the role of Mario's rival, suggested by his role in Super Smash Bros. The Racer Metal Mario is one of the Characters in Mario Kart Tour. Currently, there are two different versions of this character: Metal Mario (YellowYoshi): over all vehicles Metal Mario on B Dasher: ShadowLuigi-NG-'s version over one vehicle He is a heavy-weight character with an advantage of weight and some speed. He first appeared as a playable character in the Mario Kart series in Mario Kart 7.. Metal Mario makes an appearance as an unlockable character in the Nintendo 3DS title, Mario Kart 7. Play and win first place in a Grand Prix cup to randomly unlock one of the hidden characters. Metal Mario is a retro character that first appeared in Super Mario 64 as a powered-up form of Mario. He is a spin-off from Metal Mario, which is a form of Mario. Metal Mario is a character in the Mario universe, usually being one of the fiercer end-game opponents in the Mario sport games or Super Smash Bros. series. Metal Mario is an unlockable Heavy character.