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