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