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