Do you want to compare Birdy with X-23? Discover the powers, weakness & weapons of Birdy and X-23 from Birdy Biography and X-23 Biography. Find out all about Birdy and X-23.# Check out how is Birdy unique and distinct from X-23. Discover their love interest, sidekicks, family tree and the movies and games list in which Birdy and X-23 have appeared. Find out everything about them here!