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