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