Created by Avenger Hank Pym, the fearsome robot known as Ultron is the classic textbook example of an experiment gone awry. Originally constructed as a laboratory aide. Ultron soon discovered it had the capacity for creative intelligence and self-repair. Ultron quickly cultivated an intense dislike for his master and has faced the Avengers on numerous occasions, each time with a modified version of itself. This menace to society is currently imprisoned at the Vault...but it's only a matter of time before it devises a way to escape its restraints!