How to Evolve Ponyta. Ponyta is one of the original and first 151 Pokémon introduced in the series. It’s also one of the well-known Fire-types in the franchise and a crowd favorite when it comes to the game version. Ponyta is basically a fire horse, having fire blazes as its mane and tail, and a white body. Ponyta can also evolve, transforming to a gracious second form: Rapidash.