The voice cast features the iconic Ichirō Nagai as the narrator (his deep, ominous tone setting the stage), with Tomohiro Nishimura as a tormented Akira Fudo, and Kaneto Shiozawa as the cold, charismatic Ryo Asuka. The OVA opens not with Akira, but with a stunning, wordless prologue: the story of the original Devilman. Millennia ago, a human warrior named Amon was the most powerful demon in hell, serving the demon lord Zennon. Amon refused to bow to the rising power of Satan, leading a rebellion. For his defiance, Amon was torn apart by the demon general Kaim and his consciousness was sealed within a human sacrifice—setting the stage for the modern era.
While The Birth serves as a stylish, brutal introduction, Amon is something else entirely: a psychological horror film that dismantles its protagonist, questions the very concept of identity, and plunges the viewer into a maelstrom of visceral gore and existential despair. This article delves deep into the making, plot, themes, and legacy of this infamous and brilliant OVA. The 1980s OVA boom allowed creators to bypass television censorship, producing direct-to-video content for a mature audience. Devilman: The Birth (1987) was a landmark, adapting the first half of the manga with stunning, gruesome detail. Its success guaranteed a sequel.
Director Iida uses color masterfully. The first OVA had a gothic, blue-and-black palette. Amon is drenched in rusty reds, sickly yellows, and deep, void-like blacks, creating an atmosphere of a world already dead. Upon release, Amon was controversial even among Devilman fans. Some praised its unflinching loyalty to the manga’s darkest tones. Others found it too nihilistic, even by Nagai’s standards. The abrupt, hopeless ending left many frustrated. There was no catharsis, no final battle for humanity—just the death of hope. amon - the apocalypse of devilman
Umakoshi’s character animation is the star. Amon’s transformation is a multi-stage process of painful-looking mutations. His final form is a hulking, veined, red-and-black brute with hollow white eyes—a far cry from the more humanoid Devilman of The Birth . The fight with Kaim is a masterpiece of chaotic choreography, abandoning standard anime “rules” for a raw, scrappy, desperate brawl.
In fact, director Masaaki Yuasa’s Devilman Crybaby pays clear homage to Amon , particularly in its final episodes where Akira loses control and the world descends into a similar red-hazed, limb-strewn chaos. However, Yuasa’s version retains a sliver of melancholic humanity, while Amon remains resolutely, terrifyingly empty. Amon: The Apocalypse of Devilman is not an easy watch. It is a film that hates its protagonist, despises the idea of a happy ending, and wallows in the grotesque. But that is precisely its power. It is the most faithful adaptation of Go Nagai’s core thesis: that humanity is fragile, that the monster within is always waiting, and that in the war between angels and demons, humans are nothing but casualties. The voice cast features the iconic Ichirō Nagai
Amon: The Apocalypse of Devilman , directed by Umanosuke Iida (who worked on The Birth ) and written by Go Nagai himself alongside Akinori Endo, picks up immediately where the first OVA left off. The animation studio was Oh! Production, with character design and animation direction by the legendary Yoshihiko Umakoshi (later known for Casshern Sins and My Hero Academia ). Umakoshi’s work here is raw, muscular, and grotesquely beautiful—a perfect marriage of Nagai’s crude, expressive style and high-fidelity anime detail.
Ryo Asuka is a tragic figure in the manga, but in Amon , his callousness is on full display. He treats Akira’s disintegration as a scientific data point. He created Devilman, and now he watches his creation self-destruct. The OVA hints at Ryo’s true nature (Satan) but doesn’t fully reveal it, making him seem less like a fallen angel and more like a detached, monstrous god playing with pawns. Amon refused to bow to the rising power
Commercially, it underperformed compared to The Birth , likely due to its relentless grimness and the fact that it ends on a cliffhanger that was never resolved. (A third OVA adapting the apocalyptic finale of the manga was planned but never made.)
We then join Akira Fudo, who has merged with the demon Amon to fight for humanity. But the psychological toll has been immense. Ryo Asuka (Satan in human form) has been pushing Akira relentlessly, turning him into a weapon. The OVA’s central conflict ignites when the demon psycho-jenny, a parasitic creature that feeds on fear, attacks. In the process of fighting it, Akira’s human psyche finally shatters.
In the vast, bloody tapestry of dark fantasy and horror anime, few works have cast as long a shadow as Go Nagai’s 1972 manga, Devilman . Its exploration of a reluctant demon-human hybrid, the nature of evil, and an apocalyptic ending where Satan himself wins remains shocking even today. However, the original 1972 TV anime was a neutered, children’s version of the source material. It wasn’t until the 1987 OVA Devilman: The Birth and its 1990 sequel, Amon: The Apocalypse of Devilman , that Nagai’s violent, nihilistic vision was finally rendered in animated form.