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