I just beat the champion of the elite 4 here is my team. I was playing Black 2, I finished in 27 hours.
Heracross LV. 59 - Brick Break, Aerial Ace, Megahorn, Close Combat
Emboar LV. 59 - Head Smash, Arm Thrust, Take Down, Flamethrower
Crobat Lv. 58 - Fly, Confuse Ray, X-Scissor, Acrobatics...