Origin
WWII scientists had created a serum which could endow humans with enhanced speed, strength and invulnerability. Some humans would reach the full potential of these powers (they were called Battleships) and other would get just a portion of these powers (they were called Panzermensch). Lupin Schultz was a Panzermensch. He was used by the British spy Stephanie, who was known as Freya Bergen to the Nazis, as her bodyguard when she secretly went back to England with the serum. During a stop, Lupin relieved himself in the bushes and was shot in the back by Stephanie, who knew his powers were at their weakest. He was the first Panzermensch killed in action.