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