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