Casshan: Robot Hunter, known in Japan as Robot Hunter Casshern (ロボット・ハンター・キャシャーン, Robotto Hantā Kyashān) or simply Casshern (キャシャーン, Kyashān, romanized as Casshan in the official logo), is an original video animation (OVA) series that was directed by Hiroyuki Fukushima, produced by Tatsunoko and Gainax, and animated by Artmic. The OVA was later adapted into an English-language dubbed film that was directed by Carl Macek. This series is based on Tatsunoko Productions' 1973 anime series Neo-Human Casshern. Enslaved by an army of rebellious super-robots originally designed to help civilization avert a complete ecological cataclysm, mankind's only hope is Casshan, a legendary hero who wages a solitary war to defeat the NEOROIDS and restore the Earth to its rightful order. Casshan's father is the scientist who engineered the race of super androids now threatening to destroy all of mankind. On a crusade to save humankind and clear his father's name, Casshan must sacrifice his own humanity in order to attain the powers he needs. Haunted by the memories of his murdered mother and forced to deal with a super robot that has absorbed the consciousness of his father, Casshan must put aside his own emotions and fight to preserve the survival of the human race.