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