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