Currently, just D&D Animals except 20HD, Gargantuan, and Construct typed. Modern's Mech rules function like suits, they make you larger with bonuses to Strength and an extra HP pool. That's the evil-side's deal. Rangers pilot robots, not cyborgs. If everyone can use Super Robot Wars I'd be up for that through.
Also yep we're still filling and it seems two of them haven't checked posts in a while.