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