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