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