Vaporeon is one of the eight Eeveelutions (evolutions of Eevee). A water stone is required to evolve Eevee to Vaporeon. It has a high HP, maxing at 464. Vaporeon's name may come from the words "Vapor", as in the gaseous state of water, and "Eon", a long period of time (Referring to evolution). Vaporeon is extremely rare.