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