G-31
G-31 was one of the most problematic mutants during Operation FRS-11 (classified), and was able to eliminate many agents sent during the operation before Jack Carter eliminated him during an attack on a temporary base created by the military forces.
G-31 had its own intelligence and was known to disable security systems and other things before attacking a base. Its back-mounted rocket launchers were always a problem as it was capable of quickly destroying any type of vehicle, both land and air.
After death the body was taken to [[classified]] where it was stored in a maximum security room (the military research team decided to keep the body intact for possible future tests)