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