Dr. Gero

Biodata

Feature	Value
Name	Dr. Gero (格罗博士)
Species/Race	Human 388
Gender	Male 76 402
Affiliation	Saigo’s legion; Future Technology Research Center in West Capital 79 178
Occupation/Role	Scientist specializing in androids, energy systems, and advanced technological research 179 402 411
Status	Alive; rejuvenated through the Namekian Dragon Balls 76 411
First Appearance	In Saigo’s simulation; first direct meeting with Saigo follows in Chapter 74 71 74

Power Progression

Stage / Realm / Level	Chapter	Notes
Rejuvenated body	76	Saigo’s intervention restores Gero and Lisa to youthful bodies.
Battle Power: 2.495 million; Mental Power: 719	391	Consumes seven high-grade mortal-tier Fruits of the Tree of Might. Each adds 350,000 battle power, raising his previous total of 45,000 by 2.45 million. The intended benefit is increased mental power for research; the sudden physical boost initially disrupts his strength control.

Background / History

Family Crisis

Gero’s wife, Lisa, entered a vegetative state following an accident. He spent years seeking treatment and exhausted his savings without finding a cure. Despite his scientific reputation, he lived in West Capital’s slums and concealed his identity as a doctor from his neighbors 74.

Both sons contributed to Lisa’s treatment. Ge Wu joined the Red Ribbon Army to obtain funding and recommended that his father join as well. Ge Wen supported himself at university through competition prizes and sent most of his remaining earnings home. Gero intended to use the army’s resources to research robots and androids capable of saving Lisa—not to conquer the world 74.

Recruitment by Saigo

Saigo first discovered Gero’s circumstances through the Time Simulator. In the simulation, Gero agreed to serve him if his wish was fulfilled. After the simulated recruitment succeeded, Saigo selected Dr. Gero’s loyalty as his reward; the system explicitly guaranteed that Gero would never betray him 71.

When Saigo subsequently visited Gero in reality, the scientist already addressed him as “Lord Saigo.” Gero initially hesitated to request help before making any contribution, but disclosed Lisa’s condition after Saigo threatened to dismiss him. Saigo then used the Namekian Dragon Balls, restoring Lisa’s health and rejuvenating both spouses 74 76.

Saigo provided the couple with one hundred million Sony, instructed Gero to recall his sons, and arranged for the family to relocate. The sons initially mistook their rejuvenated parents for evidence that Gero had abandoned Lisa, but the misunderstanding was resolved, and both joined the Saiyan Legion 77 78 79.

Research Career

Gero and Lisa received research assignments before the research center was completed, including investigating whether Senzu Beans could be cultivated through ordinary methods. Gero later worked alongside Dr. Brief and Dr. Myuu at the Future Technology Research Center 80 178.

Their intensive research accelerated android development but also caused exhaustion. Saigo noticed silver strands returning to Gero’s rejuvenated black hair and imposed a five-day break and working-hour limits 180.

His later projects expanded into divine-energy measurement and interstellar transportation. Although his independent Super Scouter research stalled, technology books supplied by Saigo enabled him to move toward successful production 401 402 411.

Appearance

Gero’s appearance changes substantially after rejuvenation 74 76.

• Before rejuvenation: A weathered face and a full head of white hair 74.
• After rejuvenation: A youthful appearance and glossy black hair; he is later described as looking like a man in his twenties 180 402.
• Research attire: Frequently wears a white laboratory coat 178 388.
• Signs of overwork: Silver strands begin appearing in his restored black hair during prolonged research 180.

Personality

Gero is proud, stubborn, and ambitious about his scientific achievements. Lisa recalls that he never lowered his head even before Dr. Brief, whose Capsule Technology benefited the world. Gero believes he can create technology of comparable or greater value, and remains competitive with his old classmate 76 179.

His devotion to Lisa drives his early decisions. He refuses to abandon her treatment despite years of failure and financial hardship, and becomes deeply grateful to Saigo for restoring their lives. When Brief teases him about fearing his wife, Gero insists that his behavior demonstrates love 74 76 179.

Scientific curiosity can overwhelm his restraint. He reports the android project before its remaining problems are resolved, studies late into the night before meeting divine beings, and becomes so absorbed in a technology book that Saigo must interrupt him 178 179 388 402.

His absolute loyalty does not eliminate scientific skepticism. He initially doubts that Saigo can provide a solution to the Super Scouter problem, only becoming convinced after examining the supplied book. Dr. Brief also observes that Gero’s behavior toward others remains unchanged despite his reverent obedience to Saigo 180 402.

Abilities & Skills

Scientific Expertise

Gero possesses exceptionally broad scientific knowledge and works across robotics, energy technology, detection systems, and transportation research 179 391 411.

• Designs powerful mechanical androids and helps refine their Permanent Energy Furnaces 179.
• Develops an algorithm that expresses divine aura in battle-power terms 411.
• Reconstructs android appearances using visual references supplied by Saigo 401.
• Still encounters research limits: divine energy initially defeats his Super Scouter work, and suitable containment vessels require East Supreme Kai’s assistance 388 389 401.

Instant Transmission

Saigo passes the theoretical knowledge of Instant Transmission to Gero so that firsthand experience can assist his Interstellar Portal research 390 391.

• Intended as a research aid rather than merely a travel technique 390.
• Not immediately mastered: Gero later admits that he has not yet begun learning it 402.

Spirit Refining Method

Saigo teaches Gero the Spirit Refining Method alongside Instant Transmission 391.

• Supplements the mental-power enhancement provided by the Fruits of the Tree of Might 390 391.
• No attained proficiency level is documented in the provided material 391.

Enhanced Physical Strength

After consuming seven Fruits of the Tree of Might, Gero gains battle power far beyond his previous level 391.

• Reaches 2.495 million battle power 391.
• Initially struggles with fine control, accidentally shattering a glass vessel while trying to handle it carefully 391.
• Tests his strength on ordinary glass rather than risking the valuable divine-energy samples 391.

Research Projects

Project	Contribution and documented result
Senzu Bean cultivation	Assigned with Lisa to investigate whether Senzu Beans can be cultivated through ordinary methods. No successful result is documented 80.
Earth-version Gravity Chamber	Built jointly with Dr. Brief, followed by additional testing and production preparation. A simulation identifies the capsule version’s maximum setting as 1,000 times Earth’s gravity 83 94.
Super Dragon Ball Radar Detector	Commissioned using a Namekian Dragon Ball as a research sample. Successfully detects Namekian Dragon Balls across different planets 109.
Mechanical Android No. 1 / 007	Created with the research team at 3 billion combat power. Equipped with combat techniques, advanced detection radar, and an improved Mechanical Permanent Energy Furnace whose energy theoretically never runs out. Saigo activates it as a sparring partner for Saiyan warriors 179 181.
Permanent Energy Furnace safeguards	The furnace is designed to explode if dismantled without authorization. Gero and his colleagues also insist on keeping both furnace and android technology confidential 179.
Living-android research	Saigo directs the team to continue human android experiments while also pursuing humanoid mecha integration. He specifies heinous criminals rather than ordinary people as test subjects 180 181 185.
Blutz Wave Generator	Reports its completion during a simulation; Saigo orders further testing to improve stability and safety 281.
Expanded mechanical android lineup	Gero, Lisa, and Myuu become faster at manufacturing and improving androids after creating 007. Ten documented models range from 3 billion to 7 billion combat power 376.
Super Scouter	Studies divine-energy samples supplied by South Grand Buu. After research difficulties, receives a technology book credited to Niao Sanming. The completed device detects divine auras even when East Supreme Kai, South Grand Buu, and Kibito suppress them; Gero’s calculation equates a wisp of divine aura to 10,000 battle power of mortal aura 388 389 401 402 411.
Interstellar Portal	Receives advanced reference material and instruction in Instant Transmission. A small portal measuring three meters wide and four meters tall is successfully manufactured and tested, with paired installations at South Mountain Villa and the Saiyan Imperial Palace 347 390 402 411.
Nano battle armor	Receives advanced technology material and reports an initial armor milestone in a simulation. That version lacks space-combat capability. A later prototype has insufficient nanomaterial reserves and endurance, prompting Saigo to direct the scientists under Salza to incorporate Capsule Technology and Permanent Energy Furnace technology 347 359 411 412.

Research Materials

• Namekian Dragon Ball — Supplied by Saigo as the sample for developing the Super Dragon Ball Radar Detector 109.
• Twenty divine-energy samples — South Grand Buu fills crystal containers created by East Supreme Kai after Gero’s original containers fail explosively 388 389.
• Advanced technology books — Saigo supplies material on nano mecha, Super Scouters, and Interstellar Portals. The later Super Scouter and portal books both credit Niao Sanming as author 347 402.

Relationships

• Saigo / Saigao — Leader, benefactor, and teacher. Restores Lisa’s health, rejuvenates the couple, funds their new life, and supplies research resources. Gero’s loyalty is guaranteed by the Time Simulator 71 76 77 391 402.
• Dr. Lisa — Wife and research partner. Her condition motivates his planned recruitment into the Red Ribbon Army; after recovery, she works beside him and intervenes when he overworks 74 178 388.
• Ge Wu — Eldest son. Joins the Red Ribbon Army to help finance Lisa’s treatment and recommends Gero to its leadership; later joins Saigo’s legion 74 79.
• Ge Wen — Younger son. Inherits Gero’s intellectual talent, studies biology, and sends competition earnings home. Saigo initially encourages him to continue his education as a potential scientist 74 80.
• Dr. Brief — Old classmate, friend, scientific collaborator, and frequent sparring partner in verbal banter. They jointly build the Earth-version Gravity Chamber and work on android technology 94 178 179 180.
• Dr. Myuu — Research collaborator whose assistance speeds up android and Permanent Energy Furnace development. Gero openly credits his contribution 178 180.
• East Supreme Kai and South Grand Buu — Providers of the containers and divine-energy samples needed for Super Scouter research. Their abilities repeatedly astonish Gero 388 389.

Notable Quotes

“I-I-I love my wife! … This is proof of my love for my wife!” 179

“I really can't get used to this sudden surge in strength right away!” 391

“Just who... is this Niao Sanming?” 402