CF was a fellow mercenary hanging out with Deadpool at the Hell House. His body is extremely malleable and resistant to injury. This did not stop Deadpool from using him as a punching bag whenever he felt like it. There are some limits to his resistance to injury, such as when some IRA agents shot at him with a bazooka, leaving a scar on his belly. Typhoid Mary tried and failed to kill CF in a sparring match arranged by Deadpool.