Powers: Powered armor with heightened strength and built-in weaponry.
Access to a petrification ray.
Bio: Starhammer was actually Vuk, one of the few surviving members of the D'Bari race, following the destruction of their home planet by the Phoenix (Jean Grey). Vuk had escaped destruction, since he was still in space at the time, returning from a long time stranded on Earth.
Attempted to kill Jean Grey in vengeance, but before he was actually able to do so, she was able to pierce the armor and convince him that he had succeeded. This led to Vuk's mental and physical collapse, and the X-Men were able to do away with the armor.
Notes: May or may not be identical to the member of the D'Bari encountered in Sensational She-Hulk (1989) #43-46.