Are you that village simpleton?

Among the 151 Pokémon introduced in this First Generation period were the likes of Pikachu and Jigglypuff, and the final Pokémon in the game were Mewtwo as Pokémon #150 and Mew as #151. Mewtwo was made to be by far the most powerful Pokémon of all during the First Generation, to such an extent that its presence in the RPGs made the games unbalanced, giving it infamy until the playing field in the RPGs of subsequent generations were better balanced and Mewtwo deemed less overpowered.

Mewtwo made its Smash-series debut as an unlockable character in Melee. It is much more difficult to unlock than most other secret characters in Melee, however; it can be unlocked after either playing 20 comeulative hours of Vs. Mode matches (5 hours for four players), or playing 700 Vs. Mode matches.