So we don't include mechs on our character sheets? Alright.
Also, maybe a little more info on the mechs. For example, how large are they? Can they normally fly as well as walk? Are they normally amphibious? What sort of weapons do they use? How tough are they in comparison to, say, a tank?

EDIT: Also, how are we resolving conflicts? I'm thinking this game'll probably be heavy on combat, and freeform combat is, frankly speaking, a nightmare.
If you need a system I suggest [url=http://www222.pair.com/sjohn/risus.htm]Risus[/url]. It's four pages long and should be adequate for combat purposes. If lack of a dice roller is holding you back, [url=http://orokos.com/roll/]Orokos[/url] should suffice.