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