O personagem é Tio Sam
Uncle Sam is described as a spiritual entity created through an occult
ritual by the Founding Fathers of the United States. This "Spirit of
America" was initially bound to a powerful talisman and would take
physical form by merging with a dying patriot. The Spirit of America
had taken human form as the Minute-Man during the Revolutionary War,
Brother Jonathan in later conflicts and, during the American Civil
War, had been split in two as Johnny Reb and Billy Yank.
O painel de quadrinhos é de DC Superstars #10 que apresenta um jogo de beisebol entre alguns dos maiores heróis e maiores vilões da história da DC. Sam é recrutado como um observador neutro, com credenciais impecáveis como juiz e um conhecimento enciclopédico das regras do beisebol.