After Emperor Gore and the Reptilian empire is defeated, a new enemy, Emperor Burai and his Hyakki empire rises and threatens to take over Earth. Ryoma, Hayato, and newcomer Benkei pilot the new Getter Robo G to save Earth. (Source: Anime News Network)

When a UFO from the Vega Alliance arrives on Earth, humanity faces its biggest threat in an oncoming Alien invasion. But their hope arrives in another Alien, Duke Fleed, a refugee of the planet Fleed who finds his home in Japan. Duke pilots the mighty Grendizer, a weaponized Mech to fight off the Vega forces. Along with his best friend and partner Koji Kabuto, they fight to free Earth from the terror of the Vega forces. (Source: Titan Manga) *Note:The story of "The Inception" opens with a prequel that is not told in the TV anime.*

Years after the events of Getter Robo/Shin Getter Robo, Hayato Jin is the leader of NISAR; a private owned research and weapons development organization based in Japan. He, and Professor Tachibana, have been developing various weapons and building up their forces to deal with a threat that started fifteen years ago: the mad scientist Rando. When Rando's forces begin their terrorist operations around the world, NISAR begins its search for exceptional soldiers to pilot their super weapon, the Getter Robo.

Shin Getter Robo is the third Getter Robo series chronologically. Years after the original story and in a brief time of peace, Professor Saotome has completed his masterpiece, the Shin Getter Robo, while humanity makes large advancements in space exploration and Getter Rays research. Unfortunately, this progress brings them to the attention of a mysterious and hostile race from across time and space. *Note: Includes an extra chapter that was published on the last volume.*

Getter Robo Āḥ is the fifth Getter Robo series chronologically. Taking place several years after Getter Robo Go, Earth is now a post-apocalyptic world. Hayato, now an aging scientist, has completed Professor Saotome's masterpiece, Getter Robo Āḥ. Piloting it are Ryoma's son Takuma, the human-dinosaur Kamui and the younger brother of Tayel, Baku. Alongside the reformed Dinosaur Empire, they fight the insectoid Andromeda Flow Country attacking from across time and space.

The first Getter Robo series chronologically. Published 15 years before the rest of the manga, Getter Robo pioneered the idea of the combining and transforming robot. Millions of years ago, the dinosaurs were driven deep underground due to the sudden arrival of "Getter Rays" on Earth. After evolving into sentient beings, they grew bitter and vengeful at the humans who replaced them on the surface and began plotting their attack on humanity. Fighting against them is Getter Robo, a machine built by Professor Saotome which uses the mysterious Getter Rays as its power source. Piloting it are three strong-willed young men - the violent martial artist Nagare Ryoma, the psychopathic yet highly intelligent revolutionary Jin Hayato, and the hot-blooded Judo master Tomoe Musashi. Each controls one of three specially designed combat jets which can be combined together in different forms to form three different kinds of giant robots: the flying, axe-wielding Getter-1, the quick, drill-wielding Getter-2, and the tough, tank-like Getter-3.

Manga adaptation of Dante Alighieri's classic work, "The Divine Comedy."

Different stories involving the Getter Robo universe, illustrated by various guest artists. Stories included: - *Last 10 Seconds of the Universe* by Eiichi Shimizu and Tomohiro Shimoguchi \- *The End Point* by Naoto Tsushima \- *The Girl From the Dinosaur Empire* by Go Nagai \- *Will of the Universe* by Masakazu Ooi \- *Hayato and Ryou* by Masayuki Fujihara \- *Getter Robo Go* page spread by Hiroyuki Imaishi \- *「Quo vadis?」 Musashi Tomoe's Last Second* by Nozomu Tamaki

This series continues the Ken Ishikawa continuity of Getter manga, temporally taking place after Getter Robo Go and before Getter Āḥ. The series features an older Hayato leading a new team of Getter Pilots (and a new Getter) as they defend the earth from large plant-like monsters. (Source: Wikipedia) *Note: Includes an extra chapter that was published on the last volume.*

Kinutani Yuu's second story about Go Nagai´s work.

The ultimate cross over manga featuring Mazinger Z, Great Mazinger, Grendizer, Getter Robo, Getter Robo G and Jeeg! These all-stars band together in order to defend Earth from cosmic evil. This manga is in the same vein as all those old Toei cross over movies, and the self-parody gets pretty strong later on.

A short manga version of the UFO Robo Grendizer anime. Released along the anime series, UFO Robot Grendizer follows the adventures of Duke Fleed, the Prince of Planet Fleed, whom disguised as Daisuke, a farm worker, fights against the forces that destroyed his planet, the Vegan Empire, also the creators of Grendizer that Duke stole to fight them. While not originaly considered part of the Mazinger series, Koji Kabuto and the Mazinger mechas appear in this series, making it sort of a sequel. Grendizer introduced the concept of a transformable Robot and a space Mecha, concepts that were later taken into other mecha series. It was extremely popular in Japan, Canada, France, Italy and the Arab World and has a strong following in those countries even today.