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