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