As an S-Class hero, Genos is recognized as a formidable fighter, despite his youth. He has accumulated significant battle experience, having defeated numerous villains and evil organizations prior to meeting Saitama. However, his impulsiveness and youth can occasionally hinder him, leading to missed opportunities in combat. The Virtual Genocide System (VGS) simulations once indicated that Genos had a 70% chance of victory against any Demon-level threat. Despite his advanced capabilities, Gyoro Gyoro noted that his firepower was insufficient to defeat large and durable enemies like Elder Centipede. Nevertheless, Genos has grown significantly stronger, developing a more strategic approach to battle, and has proven himself capable of defeating Dragon-level threats single-handedly.

Physical Abilities

• Immense Strength:Genos’s cybernetic enhancements grant him immense strength, allowing him to perform feats such as breaking apart the ground with a dropkick and punching with enough force to tear apart a cliff face. He can lift heavy objects, such as a truck, with ease and was able to land a powerful punch on the Deep Sea King, sending the creature flying through a wall.

• Immense Speed and Reflexes:Genos possesses exceptional speed and reflexes, often moving so quickly that he appears to teleport. He kept pace with Speed-o’-Sound Sonic during their battle, with both moving faster than Fubuki could perceive.

• Immense Endurance:Genos’s nearly fully cybernetic body eliminates many vulnerabilities that organic beings possess. He does not experience fatigue in a conventional sense and is highly resistant to damage. His body is made from durable materials, allowing him to continue fighting even after losing limbs. While he is generally impervious to pain, he can still experience discomfort from direct acidic corrosion, as seen when he encountered the Deep Sea King’s acid spit.

• Radiation Resistance:As a cyborg, Genos is highly resistant to radiation, which can incapacitate even other powerful heroes. Prolonged exposure that would be fatal to others does not have the same effect on Genos.

Cyborg Modifications

Genos’ anatomical structure.

Genos is characterized by his extremely serious demeanor, seldom engaging in humor. His primary motivation is to become stronger, and he frequently seeks guidance from his mentor, Saitama, whom he refers to with great respect as “master.” Although Genos deeply admires and reveres Saitama, he is often perplexed by Saitama’s seemingly simplistic training regimen, which somehow produced immense strength. This contrast between admiration and frustration shapes much of Genos’s dynamic with his mentor.

Despite his stoic nature, Genos occasionally serves as a comedic foil to Saitama’s often oblivious attitude. Genos tends to approach battles with advanced techniques, strategic precision, and extensive use of robotic upgrades, often suffering significant damage in the process. However, these elaborate efforts frequently end in Saitama easily dispatching the same enemies with a single punch, reinforcing Genos’s belief that Saitama’s true strength must hold some deeper, hidden secret. His desire to uncover this mystery drives him to closely observe Saitama.

Before meeting Saitama, Genos was more intense and singularly focused on his quest for power. However, Saitama’s influence has tempered his approach, making him more reflective and measured in his pursuit of justice. A pivotal moment in Genos’s development occurs when he witnesses the hero Sweet Mask brutally killing alien prisoners, prompting Genos to reflect on how similarly ruthless he once was. Over time, he has also developed curiosity about everyday aspects of life, such as the concept of fun, marking a shift in his once purely goal-driven mindset.

Genos holds profound respect for two key individuals: Saitama and Dr. Kuseno, the scientist who saved him and continues to upgrade his cyborg body. He also shows professional respect to seasoned fighters such as Bang and Bomb, while being tolerant of individuals like King, whom Saitama befriends. However, Genos does display jealousy at times, notably when Saitama gives attention to Overgrown Rover, a monster dog, causing Genos to feel slighted.

While loyal and protective of Saitama, Genos is often dismissive or outright disrespectful towards those who interrupt or challenge his master’s authority. He is especially curt with heroes like Bang and Fubuki when they attempt to recruit Saitama, firmly asserting his role as Saitama’s disciple. This protective attitude extends to Dr. Kuseno as well, although he has been known to quickly apologize when overstepping, as seen when he chastised Saitama for referring to Dr. Kuseno as an “old man.”

Genos also displays a certain disregard for the authority of the Hero Association. During the Monster Association raid, he made it clear to Sitch that he would have participated in the operation regardless of the Hero Association’s official decisions. His actions and motivations often operate independently of the organization’s commands, driven by his own sense of justice and purpose.

In battle, Genos takes great pride in his abilities, but he is also aware of his limitations. For instance, during his fight with the Awakened Cockroach, he feels frustration at having to resort to instant adhesive gel, acknowledging that some monsters are faster than he is. His fights against opponents such as G4, Face Ripper, Awakened Cockroach, and Garou demonstrate that he values strategy as much as brute force, recognizing the importance of combining tactical planning with his raw combat power.

Prior to becoming a cyborg, Genos was known for being a diligent and responsible young boy, traits that continue to influence his personality even after his transformation.



Genos’ core.

• Full-body Cyborg Enhancement:Genos’s body is entirely mechanized, providing him with enhanced strength, speed, advanced sensors, and projectile capabilities. However, due to his modifications, he is unable to swim without specialized parts. Dr. Kuseno has also enabled Genos to taste food, converting organic intake into biofuel to power his body.

• Core (コア,Koa):Genos is powered by an energy sphere located in his chest, known as his “Core.” This core can be relocated within his body to power specific attacks, such as the Incineration Cannon. During his fight with Psykos and Orochi, it was revealed that the core functions as a nuclear reactor.

• Armor and Replacement Parts:Genos can replace damaged limbs or body parts, allowing him to return in better condition after being severely injured. He does not seem to experience pain as humans do and can continue to fight even when heavily damaged.

• Cyborg Leg:Genos’s legs are equipped with a shock-absorbing mechanism that enables rapid movement and powerful kinetic attacks, such as theJet Drive Arrow.

• Incineration Cannons:Genos’s palms contain ports for launching powerful energy blasts. These blasts can range in power, depending on which set of arms he uses. His Incineration Cannons have been used to obliterate large structures, such as the headquarters of the House of Evolution. When utilizing specialized modes likeArms Mode, the blasts become even more destructive.

• Hyper Sensors:Genos is equipped with sensors that allow him to detect approaching enemies, energy signatures, and other anomalies in his environment. While these sensors provide him with heightened awareness, they are not foolproof and can be confused by particularly fast or large opponents.

• Detachable Body Parts:Genos’s limbs can detach and be reattached remotely. For instance, his arms are equipped with rocket boosters that allow them to be controlled from a distance. This feature has proven useful in battle, allowing Genos to continue fighting even after being dismembered.

• Arm-Blades:After his Post-Super-Fight-Arc upgrade, Genos gained arm-blades, which he used to dispatch members of the Monster Association and injure Elder Centipede.

• Boosters:Genos’s shoulders and elbows are equipped with rocket boosters, which enable rapid acceleration and limited flight. These boosters received significant upgrades during the Monster Association Arc, allowing Genos to fly at high altitudes.

• Arms for Chores:Outside of combat, Genos can switch to specialized arms for household chores, such as generating a warm breeze to dry dishes.

Notable Upgrades

• Post-Sea Monster Arc Upgrade:After his battle with the Deep Sea King, Genos received upgrades that enabled him to detach and reattach his limbs via cables. He also gained the ability to useRocket Punch, a powerful punch enhanced by jet propulsion.

• G4 Upgrade:Following his battle with the robot G4, Genos incorporated G4’s parts into his body, further increasing his speed and power.

• Monster Association Arc Upgrade:Genos’s body was further enhanced with sharper, more jagged features and increased destructive power. This form focused on maximizing his offensive capabilities for a limited time, as exceeding ten seconds could cause his core to explode.

• Post-Psychic-Sisters Arc Upgrade:Genos’s la upgrade improved his firepower to the extent that he could defeat Dragon-level threats, such as the Forest King. He also gained theLightning Core, which can produce a blinding flash of light.

Combat Techniques

• Machine Gun Blow:A rapid chain of powerful punches strong enough to shatter cliffs, first used against Carnage Kabuto.

• Incineration Cannon:Genos’s signature attack, a concentrated blast of fire that rapidly heats and melts targets. Variations include theSpiral Incineration Cannon,Super Spiral Incineration Cannon, and theTrue Spiral Incineration Cannon, which he used to neutralize Psykos and Orochi’s energy attack.

• Self-Destruction:As a last resort, Genos can overload his core to destroy himself and his opponent.

• Rocket Punch:Genos’s forearm is detachable and connected by a cable, allowing him to punch opponents from a distance with great force.

• Jet Drive Arrow:Genos uses his leg boosters to deliver a devastating kinetic kick, strong enough to destroy powerful opponents like G5.

• Tactical Combination: Promoted Rook:In collaboration with Drive Knight, Genos can merge into a large humanoid robot equipped with heavy armor and weaponry, enhancing both heroes’ combat abilities.

• Notebook:Genos always carries an acid-proof notebook with him, which he uses to jot down important notes and observations. This reflects his diligent nature and his constant quest for improvement and knowledge.

• Flip Phone:Despite his highly advanced cybernetic enhancements, Genos uses a traditional flip phone instead of a smartphone or a built-in communication system. The reason for this preference is unknown, but it stands in contrast to his otherwise cutting-edge technological capabilities.