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