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