[TokuChris]

I still think it's Micchy.

Out of all the characters he has received the most characterization throughout the series. From the second-string dancer who had a crush on Mai to the weasel that started playing all sides - the Beat Riders, Yggdrasill/Takatora, and the Energy Riders - to the man who thought he had it all figured out by allying with Redue only to end up with nothing, leaving him to make his own ultimate sacrifice - his life in order to stop Kouta who he truly believed was a villain - to having nothing left to live or give his life for as Mai is gone.

Sounds like a set-up for the villain to turn hero at the end and redeem himself to Kouta and the audience once and for all.

PLUS he still has his own theme song which hasn't aired yet. You know how big music plays a role in this series (what with each actor singing their own theme songs for their characters).