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