Casshan, also known in Japan as Neo-Human Casshern (Japanese: 新造人間キャシャーン, Hepburn: Shinzō Ningen Kyashān), is an anime series created by Tatsunoko Production founder Tatsuo Yoshida in 1973.

[2][3] At Anime Expo 2013, Sentai Filmworks announced that they had signed a deal with Tatsunoko to release some of their catalog, with Casshan being confirmed as one of the characters involved.

After some time, it renamed itself Buraiking Boss (often mistranslated in English as "Black King Boss"; the name is derived from 無頼 or burai, meaning rogue or brute, using the symbols for "trust" and "nothing", but phonetically "Bu Rai" can mean "Lightning Man" or "Lightning Warrior", so the name fits with his background).

The robots mutinied en masse when they logically concluded that the good of the Earth's ecosystem required the destruction of the human race.

Luna started out as being totally harmless, until her father built an electromagnetic pistol, which was easily capable of destroying the robots.

Streamline Pictures was the first to adapt the character's name in the OVA remake series for the American market, providing the title, "Casshan".

In one of the boss fights, the main character drills through a robot by spinning in place at high speed, similarly to Casshern.

A manga adaptation of the original series, titled Casshern R, written by Chabo Higurashi and illustrated by Satoshi Shiki is set to begin serialization in Akita Shoten's Champion Red magazine on September 19, 2023.