Azumarill and Jolteon are decent options. Carbink can be useful for setting up screens and Stealth Rocks, but doesn't do much else. Slurpuff is amusing, but needs its HA in order to shine. Jolteon with HP Ice is a pain to breed though. There's also the ever used Rotom-W. Helioptile is great if you anticipate going against any weather teams.
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