Fan Casting Captain Cold in Ben 10/Justice League: The Series

Captain Cold's real name is Leonard Snart, who became emotionally cold as a child as a result of his abusive father. He became a criminal as a thug and tried to develop a weapon that could defeat the Flash. After reading up on thermodynamics, Cold designed a gun that could freeze objects and perform other cold-based attacks. Despite his emotionally cold demeanor, Captain Cold actually does have a moral code of sorts; such as "no drugs" and "no killing"unless it is necessary (such as killing his sister's murderer)