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