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