Crystalis, originally released in Japan as God Slayer: Haruka Tenkū no Sonata (ゴッド・スレイヤー はるか天空のソナタ, lit. "God Slayer: Sonata of the Far Away Sky"), is a 1990 action RPG/action-adventure video game produced by SNK for the Nintendo Entertainment System. Though Crystalis never became a runaway hit, it is now considered a cult classic. The game's initial success prompted a release for the Game Boy Color by Nintendo Software Technology in 2000, which is generally considered more of a remake than a simple port. Many changes were made to the story, music, and other aspects of the game, upsetting fans of the original. The game begins with a man's awakening from a cryogenic sleep one hundred years after a global nuclear war. Even though he is unable to recall his name or who he was, he begins to discover that he may be the key to save this world from destruction. Aided by four wise sages and a mysterious woman, he rises up against the tyrannical Draygonia Empire to ensure that humanity ultimately has a future.

Cubix (Korean: 큐빅스; retitled 로보짱 큐빅스 for the KBS broadcast; subtitled Robots for Everyone in the United States) is a South Korean animated television series created by Cinepix. 4Kids Entertainment acquired the rights for an English adaption dub to the series in 2001, retaining them until their transfer to Saban Brands (a subsidiary of Saban Capital Group) in June 2012. Saban Brands currently owns and manages the copyright and branding of the English adaption of the series.

Cyborg Kuro-chan (サイボーグクロちゃん, Saibōgu Kurochan) is a shōnen manga series created by Naoki Yokouchi, serialized in Kodansha's Comic BonBon magazine. Eleven volumes of the manga were released between 1998 and 2002. It centers on the titular character, a housecat who is kidnapped and modified by a mad scientist to be a part of a cyborg army bent on world domination. Kuro breaks his control chip, escapes and becomes a vigilante. Kuro has many allies, who help him out during instances such as urban destruction, parallel universes, outer space, and battles between other cats and cyborgs. Cyborg Kuro-chan was adapted into an anime series produced by Tokyo Movie Shinsha for TV Tokyo. The anime aired from 2 October 1999 to 6 January 2001 for 66 episodes. The manga and anime have been exported to several countries in Asia, Europe, and Africa. A large number of merchandise has been made based on the manga and anime, and two additional volumes, entitled Cyborg Kuro-chan: Extra Battle, were published. Reviews for the series note the simplistic and cartoonish art style, and a thin storyline which is mainly centered on gags and comedic violence.