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