Witness the startling creation of one of the Avengers most deadly foes — the insane automaton known simply as Ultron. Discover what drives this metallic menace, as it undertakes a terrifying scheme that will leave the Avengers changed forever! Plus, change is afoot as two mysterious new members, the Vision and Yellowjacket, join the team.
Collecting Avengers #54–60 and Avengers Annual #2[25].