With Go Nagai already illustrating and writing multiple manga creations such as Mazinger Z, Violence Jack, and Cutie Honey, he expressed his inability to take on more work to his brother and recommended his assistant and friend, Ken Ishikawa, for the job.
The first four volumes compile the chapters of the Dinosaur Empire arc (equivalent to the Getter Robo anime story) while the last two volumes compiles the chapters of the Hundred Demons Empire arc (equivalent to the Getter Robo G anime story).
G also became famous in the U.S. as it was included in edited form as part of the Force Five robot series produced for the American market, where its name was changed to Starvengers.
After some years, the franchise was revived in 1991 with the new series Getter Robo Go, directed by Hiroki Shibata, and featuring a new robot and an all-new team.
At the same time, Nagai and Ishikawa penned a 7 volume Getter Robo Go manga from 1990 to 1993, with a dramatically different plot, albeit sharing several characters.
The Go manga continued the story of the original 1970s installments, and later featured the debut of the Shin Getter Robo in its final 3 volumes.
[15] Getter Robo Arc is a three-volume manga taking place in a science fiction post-apocalyptic futuristic setting.
Ryoma's son Takuma joins the human-dinosaur hybrid Kamui and Messiah Tayel's younger brother Baku Yamagishi aboard the Getter Robo Arc, fighting, alongside the Dinosaur Empire, the insect-like enemies of the Andromeda Flow Country (アンドロメダ流国, Andoromeda Ryōkoku) from the far future.
The OVA ran 13 episodes and was presented as the sequel to a story - which was never actually animated - about the Getter Team fighting a race of amorphous aliens called "Invaders."
In addition, it features characters from Getter Robo Go that are closer in personality to those found in the original manga than the anime adaptation.
As in the original stories, Dr. Saotome creates a series of Getter-Ray-powered robots to fight the monsters, culminating the creation of Getter Robo.
Ryoma is now an irresponsible street fighter, Hayato a bloodthirsty, sadistic terrorist, and Benkei a hedonistic and gluttonous apprentice monk.
[19] Apocrypha Getter Robo Darkness continued serialization with its new title under seinen magazine Young Animal Arashi five months later.
This game featured the various versions of Getter Robo from the manga and anime and OVAs produced until that point, as well as an original pink mecha piloted by a trio of ninja women.
[23] Video game company SNK also commented they were influenced by the series when designing the three main characters of The King of Fighters '94.
[24] A live-action film adaptation was announced, produced by Big One and directed by Junya Okabe with a planned release for the franchise's 50th anniversary in 2025.