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