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