The Fallen has my vote. On Shockwave, he's a side villain, so you can't really put him in this group. And he's a pretty bad ass side villain. Look at the other side villains, the best, Starscream, what did he do? Besides get tossed around by Megatron. So for what Shockwave actually is, he kicked ass in his roll. But he was over hyped for sure.