Casshern: Robot Hunter
English title: Casshan: Robot Hunter
Japanese title: キャシャーン
Type: OVA
Source: Unknown
Episodes: 4
Status: Finished Airing
Aired: Aug 21, 1993 to Feb 21, 1994
Duration: 27 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Tatsunoko Production
Producers: Artmic, Tokyo Kids, Nippon Columbia
Licensors: ADV Films, Discotek Media, Harmony Gold, Streamline Pictures
Genres: Adventure, Sci-Fi
Themes: Mecha

In the near future, robot technology has advanced to the point of self-awareness. Under the leadership of the "Black King," machines have decimated the human population and conquered the world. Those who survived the early holocaust have been enslaved for life. But throughout the hardships, a lone hero appears as the savior of mankind. He is Casshan - a fusion of man and machine driven to combat Black King and his forces to the end. 

(Source: ANN)