Fear runs rampant throughout Tokyo with the revelation that demons in fact exist amongst us. Paranoia and the darker side of humanity boils onto the streets as people turn on one another, suspecting that anyone could in fact be a demon hiding in human clothing. Amidst the growing tensions, tragedy strikes Akira causing his mind to snap, retreating into his subconscious, allowing his Devilish alter-ego Amon to break free from Akira's cage of flesh and wreak havoc on both human and demons alike.

Akira is just another normal kid in modern-day Tokyo, until an old friend of his, Ryo, shows up and turns his world upside down. Akira learns that there is an upcoming war of demons on humanity and he has just been enlisted for a major tour of duty. But the only way to fight a demon is with their power, so Akira and Ryo risk a dangerous ceremony in an attempt to create humanity's only hope: the powerful Devilman.

Mazinger Z vs. Devilman is a 1973 animated movie that crossed over two then-popular Anime series, both of which were created by Manga artist Go Nagai. While fighting with some of his enemies Mazinger Z inadvertently knocks them into a volcano, where they crash into the prison of the Satan race and release Phoenix Jenny! Dr. Hell, learning of this, frees the rest of the Satan race and teams up with them to defeat Mazinger Z, and their ability to fly proves to be too much for our hero. Meanwhile, Devilman is also individually fighting the members of the Satan race, but their combined power is too much for him as well; can Mazinger and Devilman put aside their differences and team up to defeat Dr. Hell and the Satan race?

Kouji and his friends have defeated Dr. Hell and are now enjoying a break, but suddenly a strange prophet appears and warns everyone of an oncoming danger, mechanical beasts never seen before start appearing all around the world wrecking havoc. Its up to Kouji and his Mazinger Z to stand up to this threat but it seems he is vastly outnumber and outmatched.

A giant sea monster known as Dragonsaurus has emerged from out of nowhere, terrorizing the depths of the oceans. Great Mazinger, Grendizer and the Getter Robo G team join forces to combat the new threat. But their task becomes more complicated when Dragonsaurus swallows up Boss Borot and makes its way towards Tokyo. Source: ANN

A school that teaches young boys and girls how to become famous anchorpeople in the media. But there is something strange going in this school. The facility takes a sick pride in handing our S & M style punishments to students for the most trivial things. But there is one among them, a hero that hides her face but bares everything else in the name of justice. Her name is Kekko Kamen, all know the legend of how Kekko Kamen defeated the evil Mangriffin in a local high school, but now she's back and out to stop the evil twisted fiends once again.

After disasters have all but destroyed the Earth, leaving entire cities buried, one man named Violence Jack tries to avert a civil war brewing among the wretched inhabitants of a subterranean metropolis called Evil Town. The known world is now a nightmare after a series of natural disasters. Survivors struggle to survive the harsh conditions. Evil Town is divided into three warring factions each fighting for supremacy.

The survivors of Kanto's Hell Earthquake built a new city and christened it "Hope Town". However, this peaceful town becomes a nightmare when it's raided by the motorcycle gang, "Hell's Wind". They abduct the women while the remaining townsfolk are left helpless against them. Meanwhile, a boy, Saburo, meets Jun. Jun's lover was previously murdered, and the duo help one another to fight against Hell's Wind. The battles are getting more and more difficult, but with the appearance of Violence Jack, the citizens seem to gain the upper hand against Hell's Wind.

Lovers separated during the apocalypse are swept up in a vicious grudge match between the Slum King, ruler of the wasteland, and the immortal warrior Violence Jack.

Mazinkaizer SKL (マジンカイザースカル Majinkaizā Sukaru?) is a Japanese OVA spinoff of Go Nagai's Mazinkaiser, which was in itself a spinoff of Mazinger Z. The first episode was released on November 27, 2010 and was first screened on November 27, 2010. It also has a novel adaptation serialized in ASCII Media Works' Dengeki Hobby Magazine and a manga adaptation published in the mobile phone magazine Shu 2 Comic Gekkin. Like Shin Mazinger Shougeki! Z Hen, characters and references to other works of Go Nagai appear in this series.