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