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