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