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