Casshern SINS

A remake of the 1973 TV Series and the 1993 OVA series, Casshern SINS begins on a whole different note from it`s predecessors. The overall theme of the series is a whole note darker than before. Even the setting is more bleak, with backgrounds often consisting of a few monochrome shades. The production values of this series is something to take note of: it has beautiful animation, and brought in veteran seiyuus, such as Tomokazu Seki, and Tessho Genda.

Summary from AnimeNewsNetwork:

After decades since the original anime series, the cybernetic warrior returns in this franchise reboot, Casshern Sins. In a world where the powerful robot leader known as Braiking Boss rule over humanity with an iron fist, a mysterious girl named Luna is summoned by the people for salvation. To retaliate against this potential threat, Braiking sends 3 of his most powerful cyborgs, Casshern, Dio and Reda to dispose of her. Casshern manages to kill Luna, plunging the world into a slow descent of annhilation. Hundreds of years later, humanity is almost extinct. Robots constantly replace their body parts, fearing the corrosion of rust: their only form of death. In this wretched time and place, Casshern returns after a lengthy disappearance since his murder of Luna. Having lost his memory, Casshern now defends the humans from the robots, and find out his true identity and purpose.