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