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