This Pokémon has not evolved. Ash's Buizel (Japanese: サトシのブイゼル Satoshi's Buoysel) is the third Pokémon that Dawn caught in the Sinnoh region, and her fourth overall.

Does Ash's Gible evolve?

Gible is so far Ash's only Dragon-type Pokémon that has yet to evolve.

Does Ash get a Floatzel?

This Buizel is a Water-type Pokémon owned by Ash. He was caught by Dawn, but later traded to Ash for Aipom because Buizel preferred battles over contests.