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