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