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