Here's our "normal" pokemon roster:
Heatran LA (metal type) - 3 [C] to attack, but you flip a coin for each metal/rainbow you roll
Poliwrath LA - two good, but balanced attacks
Rhyperior E4 RR - balanced attacks without too much HP
Metagross SV - makes the game fun when it hits the field
Regirock LA - decent attack for 3 energy
Blaziken GE - [F][F][C] for 80 makes for interesting snipes with the target die. when you roll, you choose one of that player's pokemon
Gengar DP - Dropping a poke down to 10 HP and also being able to spread damage counters between a couple pokes is cool
Roserade C SV - good psychic type with balanced attack
Skuntank SF - easy attack with low damage output, but has poison. 3 for 60 is decent too
Sceptile SF - the GE one is a bit broken for rumble, but this one is balanced and fun
Magnezone SF (L) - Gyro ball lets you switch magnezone with your other pkmn on the field, which is always interesting
Dusknoir (black star promo) - Reaper pulse is good, and the power lets you look at the pokemon under your target pokemon.
Infernape E4 RR - Split bomb is good for hitting two pokes, and high jump kick is good, balanced by low hp
Froslass AR - to counter fire types [W][C] for 50 is good too, balanced by low HP
Zapdos SV - decent L type to counter some water pokes.