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