Gamespy has released a new preview through the eyes of a Biomec "Mastermind" named Llyana. Here's a snippet:
Our name, though, is the first, last, and only truly free choice a Biomek has. They ask us to select one when we choose our profession. I could have been a Terminator, I suppose. There's something very visceral about being a frontline warrior, crushing the enemies of our race under the wheels of a monstrous death machine.