Question

Please help. I want to create a team with him but I don't know if is UU or OU ;)

Answer 1

He(Or she) is UU

Hope this helps:)

Comments

http://www.smogon.com/bw/tiers/ Use this LeGrandDragonKiller instead of asking questions

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http://www.smogon.com/bw/pokemon/empoleon I ask this question because there are both UU and OU....

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No, it is saying you can use him in OU, but UU is his tier. When it lists them like that, the lowest tier listed is the tier of that pokemon.