Casshan: Robot Hunter

Mankind's only hope is Casshan, a legendary warrior who fights a single war to destroy the Neoroids and put the Earth back in its proper order. He was enslaved by the The Neoroids, which is an army of renegade super-robots that were initially created to assist society avoid a full ecological calamity. The scientist who created the super android species that is currently posing a threat to all of humanity is Casshan's father. Casshan loses his humanity to gain the abilities he needs while on a mission to save humanity and clear his father's name. Casshan must suppress his emotions and struggle to ensure the survival of the human species while being disturbed by flashbacks of his mother's death and confronting a super robot that has absorbed his father's consciousness.