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