Metal Wario is Wario's other rival besides Captain Syrup and Denpu that appeared from Super Mario Land 3: Wario Land. Metal Wario first appeared in Super Mario 64 DS as a power-up due to the flower and serves as a replacement for Metal Mario that appears in Super Mario 64 as a power-up with a metallic cap.

In Super Mario 64 DS, instead of a metal cap, it was a flower power-up depending of the player's choice, Yoshi has a bad case of tongue that causes him to fire-breathe to unfroze the ice blocks, Luigi becomes invisible can through to the Boo portaits and in cell cage, Mario can become a balloon-like form that floats in the air and Wario becomes a metallic version of himself has the similiar abilities as Metal Mario, he can sink under water and can walk under it for a short time before Wario went back to normal.

Metal Wario also appeared in Super Smash Bros. Brawl and in Super Smash Bros. 4 as a boss for a couple of occasions depending of the player's choice.

Metal Wario as he appears in Super Smash Bros. Brawl

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