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