Pokémon Colosseum, formerly known as Pokémon Stadium 3, is a starter stage in Super Smash Flash 2 coming from the Pokémon series. This stage's concept is similarly based off on Pokémon Stadium (from Super Smash Bros. Melee) and Pokémon Stadium 2 (from Super Smash Bros. Brawl), in the sense the stage can change into numerous forms based on Pokémon types.