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