Slade Wilson is a mercenary and assassin for hire with no qualms about crossing lines to get the job done, no matter where those lines are drawn. A formidable operative for the U.S. military, Col. Slade Wilson agreed to undergo an experimental process that increased his mental and physical abilities to superhuman levels. Rather than continue his career as a soldier, Slade became the masked mercenary Deathstroke. This decision resulted in his wife leaving him and his son Joseph being permanently injured, as well as the death of his son Grant, who sought to emulate Slade.