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