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