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