Is there a predator drone? How about a real cyborg with like mechanical arms and legs? Oh, and space marines who float in space rather than stand upgright. They have propulsion jetpacks and various non recoil weapons--rocket launchers, lasers, cutting torches. Some of them are cyborgs. Some of them are genetically engineered, with like extra sets of arms. A Thark or something could probably be converted. Actually a whole Barsoom set...probably out there.