Vaporeon

Though Vaporeon has a good HP stat and useful ability in Water Absorb, it is largely outclassed in the UU metagame. Specifically, Alomomola, with much greater physical bulk and access to an amazing ability in Regenerator, almost completely invalidates any niche Vaporeon has. Milotic also acts as a more effective bulky pure Water-types, as it's much more self-sustainable due to Recover, has much higher physical bulk, and can comfortably run Haze to deter setup sweepers without giving up too much. Wish passing and cleric duties can also be done better by Sylveon, Florges, Umbreon, and Blissey, all of which have better bulk or typing to do their jobs. Consider using one of these Pokemon instead of Vaporeon when making a UU team.