"Vaporeon underwent a spontaneous mutation and grew fins and gills that allow it to live underwater. This Pokémon has the ability to freely control water."
The first of the original Eevee evolutions, Vaporeon is a favorite to many because of its look and appeal as a water type Pokemon. In the show, Vaporeon can even use its Acid Armor ability to disappear into bodies of water, and in the main games, it's not only a powerful Water-Type, but can use Ice type attacks as well.
Vaporeon's Basic Attack is Water Gun, and its Special Attacks are Water Pulse, Aqua Tail, and Hydro Pump.