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