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