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