Metal Mario

Metal Mario is a metallic version of Mario. He has appeared in various Mario games and his latest apperance is in Mariokart (2011).

Super Smash Bros. (1999)
In Super Smash Bros., Metal Mario is a stubborn mid-boss encountered before the game's final boss.

Super Smash Bros. Melee (2001)
In Super Smash Bros. Melee Metal Mario appears again as a boss.

Mario Golf (1999)
In Mario Golf Metal Mario appears as the last unlockable character.

Dr. Mario (2001)
Metal Mario appears as a boss in Wario's story

Mario Kart 7 (2011)
Metal Mario is unlocked by winning the 150cc Special Cup