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