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