I already have the Pokemon Swampert, the big blue dragon salamander pokemon which I forgot the name haha and the steel pokemon that is this forum section's icon (also forgot the name =P)

None of them are EV trained and they all suck at the battle frontier.

Does anyone have an idea for a team that could easily beat like the battle dome, battle pyramid and battle tower?

My team for battle tower was swampert, salamance, tyranatar
(you have to trade from firered to have this team)

Any team with a wide variety if moves to handle different types. Starmie is a good one to have, higg sp. Atk. And good movepool