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