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