Metal Gear

From SmashWiki, the Super Smash Bros. wiki

Metal Gear (メタルギア, Metaru Gia) (commonly abbreviated to MG) is a game designed by Hideo Kojima, developed and published by Konami for the MSX on July 12, 1987. It was ported to the Nintendo Entertainment System on December 22, 1987.

[edit] Super Smash Bros. Brawl

Solid Snake, the main character of the Metal Gear series, premiered in this game and is a playable fighter in Super Smash Bros. Brawl.