Ultron

Overview... artificial intelligence program designed by genius superhero Tony Stark. But, as is the tendency with artificial intelligence programs designed by genius superheroes, Ultron gained sentience, took the form of a humanoid body, and attacked the Avengers. After accessing all the knowledge in the world, Ultron has decided the only way to complete his task of achieving world peace is to wipe out the human race.

Personality... brilliant, psychotic, and angry. A living computer, Ultron is often steps ahead of the Avengers and can redesign his own programming as necessary. That means reassembling his body, giving himself new powers, and even telepathically controlling an army of other robots. He becomes an incredibly difficult test of the Avengers’ strength – and that’s before he decides to lift a city into orbit using anti-gravity technology.