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