Dr. Hedo is the superhero-obsessed genius who accidentally restarts the Red Ribbon war in the Dragon Ball Super manga. The grandson of the infamous Dr. Gero, he builds the heroic androids Gamma 1 and Gamma 2 — and, under pressure from his employers, the monstrous Cell Max — across the Super Hero arc, before ending the story on the heroes’ side.
Role in the manga
Hedo is the engine of the Super Hero arc‘s conflict and its comic relief at once. Recruited by Commander Magenta to rebuild the Red Ribbon Army’s android programme, he cares nothing for world domination: he is a fanboy of superheroes who wants money and freedom to build the champions he idolises. That mismatch drives the arc — his creations genuinely believe they are heroes, because he built them that way, and the “villains” they are sent against are Piccolo and Gohan. Hedo also carries the arc’s moral weight: his grandfather’s shadow, his own unethical early experiments, and the question of whether a scientist is responsible for what his employers do with his work.
His story
The manga introduces Hedo before Red Ribbon does: a brilliant young researcher imprisoned for his illegal experiments, including building androids from stolen corpses in his quest to create real superheroes. Magenta springs him with an offer — funding, a laboratory, and freedom to pursue his dream — in exchange for androids strong enough to destroy the Z Fighters, whom Red Ribbon propaganda paints as an alien menace. Hedo accepts, though not blindly: he plants a listening device on Magenta and records his employers’ true intentions as insurance.
The heroes cross Hedo’s trail before Red Ribbon ever hires him: a data disc of his research passes through the hands of Goten and Trunks during their Saiyaman X adventures, giving them — and the reader — the first glimpse of the strange young scientist and his corpse-built androids. It is a fitting introduction. Hedo’s work has always run ahead of his judgement, and by the time Magenta makes his offer, the doctor’s genius is already an open secret waiting for the wrong buyer.
His masterpieces are Gamma 1 and Gamma 2, android heroes built to his own heroic ideals and strong enough to fight Gohan and Piccolo. Under Magenta’s impatience he has also been building Cell Max, a giant successor to Cell — but Cell Max is unfinished, lacking the completed control programming that would make it safe or obedient. When the Gammas begin doubting their mission, the cornered Magenta activates Cell Max early, and Hedo watches his worst creation rampage out of control. He tries to shut the disaster down, and after Cell Max is destroyed — at the cost of Gamma 2’s life — Hedo surrenders to the consequences.
The ending treats him kindly. Recognising his genius and that his heart was never in Red Ribbon’s cause, Bulma hires him at Capsule Corporation, where his research can be funded without an army attached. Hedo accepts, bringing the surviving Gamma 1 with him — the Gero bloodline, at last, working for the people it once tried to kill.
Powers and abilities
Hedo has no fighting power of his own; his genius is the threat. He is arguably the greatest android engineer since Gero himself, creating Gamma 1 and Gamma 2 with strength rivalling the strongest Z Fighters, and Cell Max, whose raw power exceeded even that. He supports his creations with surveillance tools like his insect-like spy robot Hachimaru, and the Gammas were not even his first androids: before Red Ribbon, his illegal experiments produced cruder corpse-based androids — the so-called Beta series — which clashed with Goten and Trunks in their Saiyaman X escapades and first put Hedo on the heroes’ radar. His weaknesses are human ones: naivety about his employers, obsession with his hero aesthetic, and a conscience that arrives late but does arrive.
Key chapters
- Chapter 90 — “Vs. Dr. Hedo”: Hedo’s talents first draw the wrong kind of attention.
- Chapter 91 — “The Red Ribbon Army’s Revival”: Magenta recruits Hedo to rebuild the android programme.
- Chapter 92 — “New Androids”: the Gammas are unveiled.
- Chapter 99 — “Son Gohan’s Ultimate Awakening!”: the Cell Max crisis peaks around Hedo’s creations.
Follow Hedo’s arc through the chapter index or read it officially on MANGA Plus.
Manga vs movie
Hedo debuted in the Dragon Ball Super: Super Hero film, and the manga’s retelling gives him noticeably more room: his backstory, his prison time and his recruitment are expanded, and the manga lingers longer on his recordings of Magenta and his divided loyalties. Readers coming from the film will find the same character with the gaps filled in — and a longer aftermath, since the manga continues past the film’s ending into the training chapters that close the arc.