Devilman is a Japanese manga series written and illustrated by Go Nagai. The manga focuses on a high school student named Akira Fudo who absorbs the powers of the demon called "Amon" with help of his friend Ryo Asuka in order to battle creatures hidden in human society, thus calling himself the "Devilman" in the process. The series was originally ordered by Toei Animation as a toned-down anime version of Nagai's previous manga series, Demon Lord Dante. However, Nagai wrote a darker-toned manga in order to alert readers of the dangers of the wars based on how dark the narrative becomes with each of Akira's challenges.

Kiyoshi Nagai , better known by the pen name Go Nagai , is a Japanese manga artist and a prolific author of science fiction, fantasy, horror, and erotica. He made his professional debut in 1967 with Meakashi Polikichi, but is best known for creating popular 1970s manga and anime series such as Cutie Honey, Devilman, and Mazinger Z. He is credited with creating the super robot genre; designing the first mecha robots piloted by a user from within a cockpit with Mazinger Z; as well as helping pioneer the magical girl genre with Cutie Honey; the post-apocalyptic manga/anime genre with Violence Jack; and the ecchi genre with Harenchi Gakuen. In 2005, he became a Character Design professor at the Osaka University of Arts. He has been a member of the Tezuka Osamu Cultural Prize's nominating committee since 2009.