Hunter of the Unknown was released in the year 1966。Hunter of the Unknown is also called as Agente 3S3, massacro al sole, Agente 3S3 enviado especial, massacre au soleil, Agent 3S3, Massacre in the Sun, Agent 353, Agent 3 S 3 pokert mit Moskau, agente especial, 3S3, 3-S-3 sfagi ston ilio。