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