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