Name: Jacqueline Hammer (Goes by Jack, her callsign is, predictably, Jackhammer)
Age: 27
Gender: Female
Appearance: Dirty blonde hair kept in a messy ponytail, a quite nasty scar running over her left eye and the left side of her mouth (reaching from just above the eyebrow to almost the chin), her scarred eye is white and blind but her unscarred eye is hazel. Her body, or what's left of it, exists within the combined power armor / life support system that is her suit. She was of average height before being equipped with it, but now she's eight feet tall thanks to it.
Weapon (up to six): The hydraulics that power her suit give her monstrous strength, enough to get into fistfights with even the larger aliens. There is a mount on her right arm where a minigun can be affixed, though this means she can't punch with it. Another mount allows a grenade launcher to be attached to the upper left of her back, allowing it to fire over her shoulder. Though not technically a weapon, her suit is outfitted with jump jets that, although they don't allow for the heavy machine to fly, allow for jumps that can place her on the roof of a two-story building. Similarly, while not actually a weapon, her cybernetics have taken advantage of her blinded eye to co-opt that optical nerve and link it to sensors on her suit, allowing her to see an array of information including details about her suit status and also various environmental and rangefinding details useful in a combat situation, i.e. ladar scans and toxicology / radiation warnings.
Position on Infinity: Heavy weapons specialist, assists with the heavy lifting
Reasons they joined The Infinity: Revenge for being mutilated and the deaths of many people that she cared about at the hands of the aliens.
Bio: A career soldier, she was nearly killed with the rest of her unit in an alien attack. Initially expected to be bedridden for life, she was quick to volunteer for the experimental project to put critically injured soldiers back on the front lines by outfitting them with a super-heavy exoskeleton / life support system, and the invasive cybernetics required for them to interface with the suit as though it were their natural body. No longer able to survive outside of her suit or a similar cybernetic life support system, she has made it her mission to break the aliens into as many little pieces as possible, even if she has to do it with her (admittedly large and metal) bare hands.