Originally Posted by Marshmallow Pope
Jolteon. You need an electric type on your team anyway and Jolteon only has 1 weakness so it'd be perfect for your team.
I've never found Umbreon to be that useful in-game because I'm more of an outright-attacker than using strategy or whatever. xD And it doesn't have very good attack or attacking moves. Then again, if you want something to absorb hits and annoy your opponents, it may be what you're looking for.