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