Ultron was a program recovered from Loki's Sceptre by Tony Stark. After much experimentation, he was finally given life, and assigned to protect the world and keep the peace in place of the Avengers with full control of a sub army. However, Ultron soon came to believe that the best way to protect Earth would be to kill off its most dangerous inhabitants, primarily the Avengers of whom his creator was a member of. He slowly evolved into a robot powerhouse of Vibranium. The Avengers defeated him, but Ultron had secretly transferred himself into a new body and waited for the right time to re-emerge.