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