Agustin Guerrero was an American soldier from Texas sent overseas to fight in the Korean War. Separated from his battalion, Agustin was lost in the harsh jungles. There he found an exiled Japanese warrior and assassin known as “"Nuro Neko"” ("黒い猫" - black cat). Nuro Neko trained the young soldier martial arts and the path of a warrior. After being rescued and discharged, Agustin returned to Texas to become a masked wrestler. He adopted the identity of El Gato Negro and his success as a luchador caused him to have many adventures outside of the wrestling ring before he finally retired in the late '60s.