Do you want to compare Callisto with Ultron? Discover the powers, weakness & weapons of Callisto and Ultron from Callisto Biography and Ultron Biography. Find out all about Callisto and Ultron.# Check out how is Callisto unique and distinct from Ultron. Discover their love interest, sidekicks, family tree and the movies and games list in which Callisto and Ultron have appeared. Find out everything about them here!