Mhx zero.jpg
Zero as he appears in Mega Man Maverick Hunter X
The Red Demon
"Even if we Reploids are destined to join the scrap heap when that evolutionary step does come about...We still have to fight...Not only against Mavericks, but against our own destiny as well."
―Zero, [Mega Man X8]

Zero (ゼロ?) is one of the three main characters of the Mega Man X series, the main protagonist of the Mega Man Zero series, and an important supporting character in the Mega Man ZX series as the Biometal Model Z. He is the successor of Bass and the greatest creation of Doctor Albert W. Wily. A high ranking Maverick Hunter in the X series, and a legendary freedom fighter in the Zero series, he's a die hard warrior who doesn't hesitate to take action. However, behind his cold and emotionless attitude lies a wounded soul.


Zero prominently sports a red color scheme. In his first appearance, Zero's armor was round for the most part with a red, black and white color scheme and white shoulder guards with a stylized "Z" insignia on his left shoulder. His helmet is horned and features a sharp blue crystal in contrast to his partner, X's smoother red gem. Perhaps his most striking feature is his long blond hair that flowed freely about, making Zero appear fiery in comparison to X's more cool and consistent blue scheme. While his complexion is similar to X's, Zero's eyes are blue.

In Mega Man X2 and beyond, Zero is given slightly heavier, more detailed sharper armor, introducing gold highlights and pauldrons (with a Z usually on the left pauldron to reflect the Z that was on his previously rounded shoulder) in his design. A small "backpack" device is also added as both storage and recharging unit for the Z-saber.

Zero's power source is solar energy like X, while his body material is comprised of a Titanium Z alloy, and is equipped with peculiar mechanisms called the Z-Brain (the head lens) and the Z-Heart (the chest lens), which conceal an unknown power.

Due to the artist character designer change for Mega Man Zero, Zero is given a design overhaul specifically for the series. His armor is lighter and more humanoid, and he's given a more streamlined helmet to present a much sleeker look. Unlike his previous form, Zero's arms cannot change into a buster form and instead keeps his weapons holstered around his body. The body Zero has in the Zero series is a brighter red than his original body exhibits.


Prior to his encounter with Sigma and becoming a Maverick Hunter, Zero was extremely maniacal and relishes in destruction, due to a programming bug in him during Wily's creation of him. He frequently laughed maniacally and screamed ferally during his fight with Sigma.

Outwardly, Zero appears cold and emotionless to others, even towards partners X and Axl. However, it is shown that he has the capacity to care for others. Zero keeps his cool under most circumstances. No matter what his enemies do to him, he is always able to come up with a retort.

In spite of not viewing himself as a hero, Zero has often displayed a tendency to sacrifice himself for the sake of others. He also shows distaste for innocent deaths. This is evidenced in his fighting against Neo Arcadia's ruthless policy against Reploids in the first Mega Man Zero game, as well as the second, in which he personally promised to Sage Harpuia that no more Resistance soldiers would come to harm as long as he was around.

Even though Zero does not openly show it, he, too, seems to long for peace between humans and Reploids. However, he has said that he doesn't have any problems fighting, unlike his more pacifistic friend, X; whether his enemy is a Maverick or a human, he will fight at his best. Another notable trait of his is that, despite his great power, Zero views X as the superior Maverick Hunter and considers him a hero, though he doesn't see himself as such. A prime example of this show of respect was in Zero's ending in Mega Man X6: when the scientist who was performing his sealing process asked what would happen if the world faced another crisis; Zero firmly said that the world is in good hands (X's), even when he's gone.

In the Zero series, his personality remains mostly the same, though with some changes. Given that he's been in stasis, he is ignorant of some matters and confused about others, sometimes to the point he starts doubting or believing that he can't win. This is seen a couple of times. First when Ciel was kidnapped by a Golem and he was battling him with his Buster which was not doing too much damage, was slowly starting to lose hope until X gave him his Z-Saber back or when Dr. Weil told him he was a copy, which made him believe he was not Zero, until X claimed he was indeed Zero, swapping roles with X in where X is the one that encourages him to fight instead of the other way around as it used to be during the X series.



Zero was created by the late Dr. Albert Wily sometime in the early twenty-first century. Wily alluded to him during Bass's ending in Mega Man: The Power Battle, where he mentioned he was developing a robot that will blow away both Mega Man and Bass. Schematic blueprints of his body were seen during Bass's ending in Mega Man 2: The Power Fighters. Learning from his past mistakes, including the accidental creation of Bassnium and his construction of Bass and King, Wily constructed Zero as a far more advanced robot than anything he had ever built before, with a power level far superior to that of Bass or Mega Man. He also presumably began to create the Maverick Virus around this time. Wily even dubbed Zero his "greatest masterpiece". Zero was routinely activated in a semi-conscious state during his construction and Wily spoke with him, mirroring what Dr. Light himself did with X. Wily originally planned to use Zero against both Mega Man and the insolent, rebellious Bass. However, it is unknown if this ever happened. Zero contained a flaw in his cognitive program that made him violent and unwilling to obey instructions. Because of this, Wily decided to seal him in a capsule. Decades later, in the early twenty-second century, he was awakened by a group of Reploids prior to the first Mega Man X game.

When he was first activated, Zero awoke as a Maverick (by the definition of wanting to cause harm to humans), and he destroyed all intruders who had dared to enter Wily's lair. Zero was later cornered by Maverick Hunter Elite, Gamma's Maverick Hunter unit, inside an unknown facility—at the cost of the total loss of said unit, however. Not wanting to get any more comrades endangered by the powerful enigmatic Maverick, then-Hunter Commander Sigma himself challenged Zero in a one-on-one battle. Even though Zero eventually gained the upper hand during the battle, Sigma was able to defeat the red Maverick after the gem on Zero's head began to glow with a 'W' symbol, apparently causing Zero great pain.

Sigma punched this crystal, shattering it and defeating Zero. As both Zero and Sigma were in close proximity to the former's capsule when they fought, which contained the Maverick Virus, Sigma and Zero were consequentially infected with the virus. Zero was then brought to Dr. Cain, who analyzed him. After that, he recovered from his battle with Sigma and was placed under Sigma's watch. Zero did not show any more signs of Maverick behavior and was enlisted into the Maverick Hunters' 17th Elite Unit.

Maverick Wars era

The Day of Σ

As part of the 17th Elite Unit, Zero became an excellent Maverick Hunter and was soon ranked A-Class, the highest rank the Maverick Hunters had to offer at that point of time. It was during that time in which he met X for the first time who was also part of the 17th Unit, even though he was only ranked B-Class due to his hesitation on the battlefield. The two became friends and partners and worked together whenever they could. Zero soon became somewhat of a mentor to X.

Soon afterwards, a series of Mechaniloids going berserk occurred in Abel City, the city in which the Hunter Base at that point was located. During the course of the investigation, it was Zero who eventually uncovered the identity of the person responsible for the attacks, which was none other than Sigma himself. Zero realized this after analyzing various locations which were seemly connected to the attacks, and by looking over the bodies of defeated Reploids, which were all taken down with a single blow directed at a weak spot. There had been only a very few number of Reploids with such perfect skills, including Sigma. The blows that the defeated Reploids had taken was caused by a beam saber, and not by range-weapons, which ruled out the previously suspected Vile.

Even though Zero managed to block Sigma's first attack, he was soon overwhelmed by Sigma and was used to goad X into attempting to kill Sigma, which would have killed Zero in the process, to see whether X really could hesitate. Upon seeing that X indeed does hesitate, and to get Zero out of his way, Sigma slashed him with his beam saber and abandoned him while he held X captive, and launched a missile attack on Abel City. Some time later, Zero regained conscious and found X all alone in the facility, heavily damaged. He then brought him back to the Hunter HQ.

Mega Man X/Maverick Hunter X

After Sigma's declaration of Reploid Independence on July 4 21XX (June in the US manual of the original game), dubbed "The Day of Σ", Zero, who at that point was the highest-ranked member of the Hunter organization, became the new leader, and he and a repaired X fought together against Sigma's uprising rebellion. Zero saved X during a Maverick attack at the Central Highway from Vile. In Maverick Hunter X, Zero also responded to Vile's question about why Zero would aid a B-Class Hunter like X by informing Vile that he's nothing more than a Maverick at the present. After that, the two split up, with X's task to slow down the Maverick activities in nearby areas while Zero himself was on recon duty at Sigma's fortress.

They eventually met there and together invaded the fortress. Here, they encountered Vile for a second time. Zero was captured by Vile and imprisoned in a cage (in Maverick Hunter X however, Zero was left unconscious by Vile as bait for X). When X was also defeated by Vile, Zero managed to break free (or regain consciousness, as was the case in Maverick Hunter X) and destroyed Vile's armor by firing a charge shot from point-blank range, which was a successful, yet fatal action. Afterwards, Zero handed his Buster Parts to X (only in case X hadn't obtained the Buster Upgrade from the Dr. Light capsules) and encouraged him to continue to fight before ultimately dying in X's arms (Maverick Hunter X also has Zero remarking on the irony of his actions in saving X leading to his death when he earlier told X not to be so careless[3]).

Vile Mode In Vile Mode, included after completing the main game in Maverick Hunter X, Zero's characterization was similar to in the main game, including saving X from Vile. However, instead of chasing Vile off, Zero instead retreats with an injured X. Zero later reappears as the final boss alongside X at Sigma's Palace Stage 3, where he learns with X that Vile is in fact working against Sigma as well as fighting X and Zero. He ends up severely injured by Vile, although he eventually managed to sneak up and grab Vile's leg and pin him before he could deliver the final blow against X, also referring to Vile's earlier rant about X "changing the world" as "maverick talk," also grounding Vile so he'd be caught in X's charge shot. It is unknown if Zero managed to survive the charge shot that critically wounded Vile, or if, like in the main game, Zero also ended up destroyed in a sacrificial effort to help bring Vile down.

Mega Man X2

After Sigma's defeat, the Hunters tried to salvage whatever remained of Zero from the sunken fortress and found Zero's control chip (which serves as Zero's "brain" and consciousness) which had miraculously survived the destruction of the body. However, the Hunters were incapable of creating a new body for Zero because they were unable to analyze his unique body structure.

Six months later, a group of three Mavericks, calling themselves the X-Hunters (Counter Hunters in Japan), contacted the Maverick Hunters and claimed to be in possession of all of the rest of the parts that would be required to rebuild Zero. Although the American translation of the game fails to reveal how the X-Hunters gained the parts, the Japanese version elaborates with the claim that Serges (Sagesse in Japan) built them. The X-Hunters challenged X to a battle in order to win Zero's parts.

When Serges constructed the parts for Zero, he upgraded the body, including reinforced shoulder plates and Z-Saber. Other enhancements were the improved arm guards (in contrast to the original streamlined ones) and leg joints, with improved mid-air dash thrusters and gold-plated covers, along with thicker and bigger chest armor. Because Serges was able to rebuild Zero with an improved design, it is theorized that Serges is a reincarnation of Dr. Wily, whose mind could have been programmed into the Maverick Virus before it mutated into the Sigma Virus. The first version of Zero was apparently just an "incomplete" prototype, as shown by the second version's outline shown as the blueprints in The Power Fighters.

X, who didn't want his friend to be in the hands of Mavericks, accepted and eventually recovered Zero's head, body and foot parts. Eventually, Zero was reconstructed by Dr. Cain (now completed with his signature Z-Saber and enforced shoulder plates) and assisted X in destroying the base of the resurrected Sigma. Trying to fool X however, Sigma had constructed a doppelganger of Zero with Black Armor which he claimed to be Zero, however this copy was destroyed by the real Zero. This is the canon ending. In the Japanese version of the game, Sigma mentions just before his death that Zero is the last of "Wi...numbers", giving the first hint that Zero is the last of the "Wily numbers", or advanced robots built by Dr. Wily.

As a non-canon scenario in X2, if X wasn't able to retrieve all of Zero's parts, the X-Hunters would steal any parts X had previously collected from the Hunter Base, as well as Zero's control chip. Zero would then be reconstructed by Sigma as a Maverick and was fought by X prior to his encounter with Sigma. After being defeated, Zero would regain his consciousness and assist in destroying the base. His weakness in this battle is the Speed Burner.

Mega Man Xtreme

Zero played only a minor role in the story of this game. After X managed to escape the digitized version of the Central Highway, Zero would inform him that Mavericks had hacked the Maverick Hunters' Mother Computer, stealing and corrupting data and allowing other Mavericks to run wild everywhere. While X was digitized again and sent back into the Mother Computer to destroy the protection systems that were needed to be taken out to shut the computer down, Zero would handle Maverick attacks in the real world. Also, later during the game, X would be able to find four capsules within the digitized areas, the Zero Scrambles, which allowed him to "summon" Zero to perform an attack or move. However, this was only combat data of Zero and not the real one.

Mega Man X3

Zero only played a minor role during the Doppler incident . He and X defended the Maverick Hunter Base from Dr. Doppler's Maverick forces and saved X from the traitor Mac. Zero would here and there be of help for X as he could summon him once a mission (this marked the first time Zero was playable, but he wasn't able to fight bosses), using his Z-Buster and his Z-Saber. While trespassing Doppler's secret lab, he saved X from a spike room booby-trap with REX-2000.

If Zero was summoned during the second stage of Doppler's lab at a specific point, he fights a mosquito-like Mechaniloid which is destroyed by him, however the Mechaniloid managed to hit Zero in a last resort attack. The crash of the Mechaniloid damaged Zero's power generator which forced him to return to Hunter Base to have repairs done. Because this made him unavailable for the rest of the trip, he would then lend his Z-Saber to X.

Mega Man Xtreme 2

In Xtreme 2, Zero paired up with X to investigate the resurgence of previously retired Mavericks. Technically speaking, this is the first time Zero can fight bosses. It also introduced his famous three hit saber combo, as well as his ability to learn special techniques as opposed to weapons. He battled Gareth, partner of Berkana, who was reviving the dead Mavericks. Afterwards, Zero aided X in the final battle against the resurrected Sigma.

Mega Man X4

Zero's first appearance as a fully controllable character with his own story also marked the most tragic point in his life. At the beginning of the game, Zero encountered his creator within his dreams, who ordered him to finally obey his orders and fulfill his destiny by destroying his nemesis. When he awakened from the nightmare (which is implied to have happened before), he was immediately dispatched to the Sky Lagoon colony which had been attacked by Mavericks. Repliforce was also confronted at the scene, claiming to assist the Hunters in evacuating the city; however, both factions didn't trust each other, and, as a request for interrogation was declined, the Great Repliforce War broke out.

When the Repliforce was labeled Maverick after the Sky Lagoon incident, both X and Zero were assigned different missions to gather information about Repliforce's coup and to cut off their support lines. Iris assisted Zero on his missions as his operator, like during the Erasure incident from Mega Man Xtreme 2. However, Iris herself was part of Repliforce while her brother, Colonel, was Repliforce's second-in-command and therefore an imminent target for the Maverick Hunters. Iris didn't want the two of them to fight, torn between her care for Zero and her love for her own brother. When the two of them battled in the Ceremony Hall of Repliforce's command center, it was Iris who stopped the two Reploids from terminating each other by begging her own brother to stop since Zero had previously saved her life after the Sky Lagoon had crashed down. Colonel, who had always regarded Zero as a friendly rival, backed off. Zero, on the other hand, stated that someone had to stop Repliforce at all costs, much to Iris' grief.

When Repliforce's coup began, Zero rushed to the space port to stop the ascension of the military troops to the newly constructed space station of Repliforce, Final Weapon. There he battled Colonel, this time not holding anything back, just like his former friend, with Zero being the victor of the fight. After that, he traveled to the Final Weapon where he was, much to his surprise and horror, encountered by Iris, who was blinded by her grief of the loss of her brother and anger for Zero killing him. She had salvaged Colonel's Control Chip from his remains, fusing it with her own programming, thus resulting her body to transform into a massive Ride Armor-like combat form which Zero was forced to battle. Even though he didn't mean to, Zero damaged the exterior power core of the structure, resulting in the destruction of the armor. He hurried to Iris' body, however, it was too late to save her. Whispering to Zero that she did all this because she wanted to live in a world for Reploids only, and that he could live in that world too. She died in his arms and Zero, who was totally overthrown by the pain, began questioning his own reasons for fighting and the means of his own existence. Filled with anger, he confronted General, leader of Repliforce, defeating him in battle. Upon the end of the fight, General realized that someone had taken control of Final Weapon, aiming it at Earth. Zero went to the control facility, only to find Sigma there, who revealed their pasts to him (back when Sigma was still a Maverick Hunter and Zero was first seen as a Maverick).

After Zero had destroyed Sigma and the General had sacrificed his life to make the Final Weapon self-destruct, Zero escaped the destruction in a small spacecraft, thinking about what he had done. He hadn't been able to save anyone he cared about. He had killed his own friend Colonel, the General, and Repliforce with him, who in the end has only been manipulated by Sigma and the Mavericks. Most of all, he lost Iris, who he had cared about for so long. Questioning whether or not Reploids were destined to become Mavericks after all, he returned to Earth.

If the game was played by X, Zero would only appear at the very end of the story, contacting X from Hunter Base upon his return to Earth by spacecraft. X, wondering what would happen if he turned Maverick, asked Zero to take care of him if that would ever happen. Confused, Zero didn't respond to X's request, although he seemingly realized X's seriousness about the topic and the eventual battle between him and his best friend.

Mega Man X5

The space colony Eurasia was set to impact Earth, recently being coated in a large outbreak of the Maverick virus, which would cause catastrophes of unimaginable proportions. In the meantime, X and Zero faced Sigma on Earth and easily defeated him, however, Sigma lost on purpose to spread the Sigma Virus around the world. Due to this, thousands of Maverick Hunters turned Maverick, yet, the fall of the colony posed to be a bigger threat. In order to stop Eurasia's impact, X and Zero both would gather several enhancement parts to power up an old energy cannon, known as "Enigma" to destroy the colony before it could devastate the planet. While doing so, Zero noticed his strange reaction towards the Sigma Virus. While others (including X) got hurt by being surrounded by the virus, he himself actually felt energy growing inside himself, multiple infections of Sigma Virus anomalies even turned him invincible for brief period in time. Behind the scenes, Lifesaver informed Hunter General Signas about his concerns regarding Zero, but also that there might have been a chance to develop antibodies from his DNA to cure the Maverick/Sigma Virus. Yet, the accomplishment of the Enigma was rendered priority one.

However, it didn't matter how much the cannon was powered up, complete destruction of the Eurasia was impossible and only delayed the impact (in the game it's possible to destroy Eurasia with only the cannon, but story-wise it didn't work). As a last resort action, a Space Shuttle was readied to be launched and directed right into the colony to have it self-destruct right at the core. The shuttle would be operated by Zero and the operation succeeded, however debris would still rain down on Earth. Zero was later rescued by the Hunters but the peace only lasted for a short time as a new threat arose from the debris of the Eurasia.

A new virus, merged from the virus inside the colony and the Sigma Virus, called the "Zero Virus" by Alia, had begun to effect the impact area. The area flooded by the new virus was strangely deformed and was filled with anomalies that even resembled Zero. Also, strange Mavericks were found in the area, bosses that actually resembled earlier bosses such as the Shadow Devil and Rangda Bangda. The closer X and Zero got to the source of the virus, the higher Zero's viral infection level rose, yet he still isn't showing any Maverick behavior. Not wanting Zero to become a Maverick, X would fight his friend in order to have him brought back to Hunter Base . Eventually, the battle would end in a draw (both using "Soul Body" on each other when the other thought they were winning). Upon seeing X and Zero both completely exhausted after their battle, Sigma would reveal himself to destroy them. However, Zero managed to prevent this, protecting X and himself and forcing Sigma to retreat.

If the one who would pursue Sigma was Zero, Sigma would reveal to him that he let the colony fall on Earth solely to purify Zero's body with the virus to clear his mind and awaken his true self. Upon defeating his first form, Sigma would also reveal to Zero that he met an "Old Man " which knew a lot about Zero and his past, caring for him like a father and that it was that man's suggestion to flood Zero's body with the Virus to awaken him. After defeating his large battle body form, Sigma would then try to take X, who was still left unconscious at the scene of his battle with Zero, down with him. Zero would take most of the hit, seriously damaging him. The remains of Sigma attacked Zero and X one final time, impaling both of them through the chest area but was then completely destroyed by Zero who gained consciousness briefly and fired a charge shot at him from his buster.

Exhausted and damaged from the battle, Zero finally realized that he was going to die and while in a state between life and death, he began recalling memories of his creator and his true purpose of existence. Yet, his memory circuits began to cease function. After recalling his memories of Iris and apologizing to her, Zero asked X to live for him, bringing peace to the world. After X was saved and repaired by the spirit of Dr. Light, X searched for Zero, finding nothing but his Z-Saber, which he kept in order to honor his fallen friend.

As a non-canon scenario, if the Shuttle Operation was unsuccessful, the large amounts of the Colony Virus, together with theSigma Virus Zero had already been infected with from Earth, would "awaken" Zero upon crashing on Earth, thus challenging X to a battle. His mind now cleared and caring about nothing but his mission to fight X, Maverick Zero battled X, resulting in a draw. After taking massive damage during the fight, Sigma revealed himself and prepared to destroy X. Zero, however, regained consciousness and he jumped into the line of fire, protecting X with his body. When X destroyed Sigma in this scenario and was damaged badly, Dr. Light would appear to save him, however he made him forget about Zero and would implant a protection inside X's mind so no information about Zero would be accepted.

Originally, Mega Man X5 was supposed to be the final game of the series and Zero getting killed would make way for the Mega Man Zero series. However, Mega Man X6 was produced unbeknownst to Inafune and without his approval, and since the plot of X6 involved Zero once again, he had to modify his Mega Man Zero concept in order to not make the story more confusing.

Mega Man X6

In Mega Man X6, the mad scientist Gate began tampering with Zero's data. By studying a piece of Zero's body found in the debris of the Eurasia crash site, Gate created the new Nightmare Virus, a discolored clone of Zero (called "Zero Nightmare"), and the near-invulnerable Reploid, High Max. X, taking the assault on Zero's reputation personally, set out to investigate. Upon destroying the Zero Nightmare, X is reunited with his friend, mysteriously repaired and carrying a brand new Z-Saber. Together, X and Zero set out to defeat Gate and the imperfectly resurrected Sigma.

Who exactly repaired Zero was never directly stated. The Dr. Light capsule hologram, denied knowing who repaired him. It should be noted that the reunion between X and Zero had Zero stating that he repaired himself, and hid himself away while he "healed". Zero's ending in this game helps to mend the storyline between the X and Zero games. It shows Zero being sealed to remove a component from his body (presumably something having to do with the virus' influence on him, and/or his original murderous persona). This was originally going to show that the X series had ended, but fans loved the series so much, Inafune was forced to continue, making many people believe that this is either a glimpse of the future, or non-canon. However, recently revealed backstory information in the Japanese Mega Man Zero artbook has revealed that this ending is indeed canon, takes place in an unspecified time period beyond the last X series game, and is in fact considered the first of two different times when Zero sealed himself away (the second time being after the Elf Wars, when he sealed himself away once more in the Rockman Zero TELOS drama tracks, and was then finally reawakened in the Zero series). Despite being confirmed as canon, future X series games would contradict this.

Alternatively, it is possible to clear Mega Man X6 without ever finding Zero. In this event, cutscenes show that Zero is indeed alive, but X and the other Maverick Hunters never find him. Zero leaves on his own, stating that there's something he needs to take care of. Like the alternate ending to X5, canonically, this ending does not happen.

Mega Man X7

Zero is responsible for the bulk of the Maverick Hunter workload due to the fact that X has recently refused to battle for any reason, due to his doubts about the Hunters' violent methods (Zero seems to have some resentment towards the workload, as indicated when he says, "I can't believe I'm back here again!" in an irritated tone in his introduction). Zero captures a mysterious Reploid, Axl , who has just recently abandoned the vigilante group Red Alert. Axl assists Zero in stopping Red Alert's rampages, and eventually X rejoins them. While fighting alongside Axl, Zero learns from him at least some of the details about Red Alert's downfall. After the battles, Zero has nightmares of X attacking him, out of obsession for eliminating Mavericks (possibly foreshadowing the rise of Copy X in the Zero series).

X7 signified a few changes to Zero's gameplay. His Z-Buster was eliminated altogether, and in addition to learning new attacks from defeated Mavericks, Zero can also gain other melee weapons to replace his saber. This tradition would continue through the rest of the Mega Man X series and up to the Mega Man Zero series.

Mega Man X8

Zero continues to work with X and Axl, who is now working with the Maverick Hunters, in dealing with new threats. One of the new navigators, a purple-haired girl named Layer, has shown a romantic interest in him; Zero has not returned her feelings however, simply keeping the relationship professional. Zero's memories of the virus incident from X5 continue to haunt him, fueling his hatred towards Sigma. Upon confronting him, Sigma confirms that Zero is the original carrier of the Maverick Virus , which was transferred to Sigma prior to the first X game (presumably it happened when Sigma shattered Zero's head gem as depicted in X4, though the unlockable animation The Day of Σ in the PSP remake has put a few doubts on this). This information was long-since stated in Japanese sourcebooks, as well as implied as early as X4, but was never before made officially available to the public in other regions.

Mega Man X: Command Mission

In the game, Zero is sent along with X and another Reploid, Shadow, to investigate Reploid uprisings in Giga City. Zero is separated from X after Shadow betrays them and was presumed dead, until he reappears some time later and attacks one of the rebelling Reploids in a mechaniloid factory. At this point, Zero joins X, Axl, and a number of other Reploids that X assembled to assist him. With Shadow's betrayal still fresh in his memory, Zero is unwilling to trust X's new friends, and promptly decides to work alone. However, one of the Reploids, Spider, risks his life in Zero's defense. After this, Zero decides to rejoin X's group permanently, although Spider eventually turns on them as well and reveals himself as Colonel Redips. He had hid his true identity from the group by using a replica of Axl's DNA change, hinting toward the possibility that Spider could have actually existed at one point (since Axl needs to take DNA from a Reploid in order to change into it). Zero briefly hesitated when his allies attempted to stop Redips from using the Supra Force metal, presumably out of shock that Spider and Redips were the same and thus he was "badly duped." However, he would recover and, with the others, defeat Great Redips in the end, before returning to Earth in a broken off part of the elevator.


Zero is a very adept combatant on the battlefield. His power far exceeded X's (until X himself grows in power himself). His power as a robot from a past age is considerably exceptional in the Maverick Wars . In Mega Man X, Zero was equipped with a powerful buster weapon known as the Zero Buster, but from X2 and onward, Zero wields a melee weapon known as the Z-Saber, a sword with a blade composed of pure destructive energy, modeled after the lightsaber of Star Wars fame. It is for this reason that Zero is often used for seasoned players as he is required to fight up close rather than at a distance. His first playable appearance in Mega Man X3 is more or less essentially a future representation of how X will turn out, unleashing double charged shots and the almighty Z-Saber which fells bosses with a few mere swipes. Unlike his comrades, Zero does not copy the powers/weapons of defeated Mavericks, but instead, learns special attacks known as Techniques (必殺技 Hissatsu Waza?, lit. Finishing move/Coup de grâce) in the X series and as EX Skills in the Zero series, which are attacks based on techniques utilized by bosses. He does not require the use of a buster weapon as the attacks often utilize his hands or enhances his Z-Saber power by empowering the blade with elemental properties. The Zero Buster can be utilized from both arms, as evidenced by some gameplay and cutscene representations interchangeably showing the buster arm as being his left or right.

Unlike X, Zero cannot obtain performance-enhancing armors, with a few exceptions. This is due to the fact that during the time Zero was created, Dr. Wily could not prepare any future armor enhancing upgrades for him like Light had done for X, thus Zero's durability stayed consistent, making him a traditional Glass Cannon. Defined in SNK vs. Capcom: SVC Chaos, Tatsunoko vs. Capcom, and Marvel vs. Capcom 3 (more so in terms of his bio), Zero is shown to not be so overly strong (unless under the Maverick/Zero Virus when he was first found or in his Awakened Boss fight in X5) as his Marvel vs Capcom 3 power grid statistics gives his Stamina rating a 3/7, but his other stats (Strengh, Speed, Intelligence and Energy Projection) a 5/7, with his Fighting Ability as a 7/7. This shows that what Zero lacks in raw strength with the absence of the virus he makes up for extreme fighting ability and skills in many other fields, enabling to out-duel/wear down nearly any foe, along with showing extreme adaptation to much of his battles. This is expressed in the aforementioned fighting games where Zero has low health and average attack, though many claim him to have some (if not many) of the best combos (even loops or near/true infinites) out of all characters. In Ultimate Marvel vs. Capcom 3, Zero (like several characters from the original version to the revision), has had his power grid changed. His Stamina and Strength are now 2/7, his Intelligence a 3/7, and all the rest of his other stats are now 5/7. This shows that not only Zero puts more than just skill into his fighting ability, and that he uses all his speed and knowledge to back up his fighting prowess. His "mediocre" intelligence also shows Zero tends to clear his mind during fights for better focus.

The original X games, however, have Zero's Z-Saber be capable of destroying several normal enemies in a few blows. The fighting games seem to decrease it to give more balance, and coincidentally give a possible accurate description of Zero's statistics. Zero may also be aware of his low durability (in comparison to his comrades), and may also have enough skill to last in a fight to fight/parry off any hit that comes to him, describing more of his skill as a Master Swordsman. This makes him a rather unique Glass Cannon as he not only he's weak on defense and strong on offense like the other kinds in fiction, but Zero has skills in several other fields of battle with great ability to adapt to practically any opponent he fights. (Glass Cannons usually have raw power, which Zero seems to lack often.)

Zero's long combos in fighting games seems to nod at his personality as well, taking note that he shows no mercy to his enemies as he basically never holds back on them, showing he always fights to the best of his ability. This shows that Zero is somewhat more powerful than he lets on in-universe.



  • According to Keiji Inafune, he envisioned Zero as the new "Mega Man" and wanted him to be a playable character from the start. Keiji wanted to introduce something new and different to the franchise, but understanding that it would not be wise to completely go against everything that had already been established (also fearing that Zero's drastic appearance would receive a critical reaction), he did not mention this idea to his superior and submitted Zero as the sub character to Hayato Kaji's "Mega Man" (X) as originally intended.[1]
  • In X4, Zero was actually going to have his own Ultimate Armor, known as "Mega Armor", instead of his Black Zero recolor. The designer of the original X's Ultimate Armor said, "The truth is, Zero was going to have a Mega Armor, too. For various circumstances, we wound up with just X this time. You want to know what his Mega Armor would have been like? Well, it has to do with Zero’s connection to W… actually, I’m not allowed to say any more than that. But, at least I can show you the rough design. I hope that sometime it will see the light of day. That’s all for now! Enjoy Rockman X4!"[2]
  • Although Zero and X aren't technically Reploids (robots based on X's schematics, "replicated androids"), as they are original androids from the past (technically making them "Robot Masters"), they are known as such because the term Reploid is used for all androids with human-like A.I.
  • In X1-X4, Zero's eyes are green in-game and blue in artworks. His eyes completely changed to blue in Mega Man X5 onward. His eyes are also green in Maverick Hunter X and Tatsunoko vs. Capcom. In the Zero series, his eyes ranges to black to purple.
  • Zero has been depicted with a full head of hair in manga form, but never in the video games. In the Rockman X manga, Zero's helmet is constantly removed, either by himself or due to the helmet being damaged in battle. He is shown to primarily keep his hair slicked back, although it appears more unkempt following larger battles. In the Rockman Zero manga, Zero's helmet is used as a signal to display his split personality syndrome; the cowardly inept personality appears without a helmet, and features loose unkempt hair, while his stoic combat-ready personality appears wearing the helmet.
  • The events during and after Zero 4 suggest that Zero has finally died for good; however, to this day, this was not officially confirmed (Mega Man Zero Official Complete Works claim his fate is still unknown). This would later be repeated in ZX Advent, where Model Z disappears under similar circumstances.
  • In X5, if the player looks carefully at the intro sequence, where there are green words scrolling about the screen, one of the words say "Wily". This is another hint at the fact that Zero was created by Dr. Wily.
  • In the X series, Zero is a Maverick Hunter fighting against insurgence and rebellions caused by Mavericks. In the Zero series, Zero joins the rebellion against the current government, in the process becoming labeled a Maverick himself.
  • Of all the characters to have appeared in the series, Zero is unique in that his Japanese voice actors differ in the series he appears in. In the X series, his voice actor is Ryōtarō Okiayu, while in the Zero series, his voice actor is Yuuto Kazama. The voice change is evident as the former reprises the role for Maverick Hunter X, which the Zero series predates as well as X7 and X8.
  • It's rather interesting how Zero, a creation of Dr. Wily, actually ended up fulfilling Dr. Light's dream instead of Wily's - in conclusion of a lifetime fighting against hordes of Reploids based on Light's creation, no less, whose leaders and/or master manipulators often carried even darker ambitions than Wily.
    • Also interesting is how despite not being intended to be Three Laws compliant, at the end of Zero 4 where Zero fights Weil, Zero unwittingly follows the fittingly named "Zeroth law", which was made to prevent robots from harming a human, unless said harm would benefit humanity in general.
  • Zero is one of the few main characters that actually disappear canonically with no apparent explanation (and the most famous, being that he's done it time and time over).
  • As Model Z, Zero is the only Biometal to actually attack when not MegaMerged, paralyzing opponents while not even wasting a drop of his energy.
  • Having been completed by Dr. Wily between the classic and X series, Zero is the longest-lived robot in the Robot Continuity, with an (ultimate) age of termination of 300+: 100+ for the time between the Classic and X series, 100+ more for the Maverick and Elf wars, another 100+ for the inactive hibernation state in which he begins the Zero series, and four for the whole of the Zero series, possibly longer given his unknown fate at the end of Zero 4.
  • Zero, or some signature of Zero, appears in every series in the main timeline (in the classic series in Mega Man 2: The Power Fighters, throughout the X and Zero series, in the ZX series as Model Z, and in the Legends series in the form of his Z-Saber/Zetsabre). He is the only character in the entire franchise that appears in every main series thus far. Additionally, he appears in Mega Man Network Transmission as Zero.EXE.
  • Interestingly, his bio in Marvel vs. Capcom 3 states that Sigma discovered Zero in a cave, which is incorrect as he was found in a desolate laboratory by Gamma's unit, which met an unfortunate demise upon awakening him. Sigma however only fought Zero, and barely made it out alive at a terrible cost.
  • In Ultimate Marvel vs. Capcom 3, Hawkeye refers to Zero as an "Angry space midget with a sword." Zero's win quotes also mentions X as being cunning, but also shares that X also lost to him. With Frank West, he calls him a civilian, and his win quotes when defeating Frank West refer to his camera as a "photo capture device". Zero likely refers to it in this technical sense because cameras in the future obviously look much different than the one Frank uses. 
  • In both versions of Marvel vs. Capcom 3, Zero will say, "Another souless copy." when encountering himself. This is a possible reference to both X2 and X6.
  • The theme when Zero is discovered in X6 is a remastering of Variable X from the first X game.
  • In both versions of Marvel vs. Capcom 3, when Zero uses his Genmu Zero attack, if one sees Zero carefully, he will be emitting an aura similar to his Maverick state in X5 when he executes the attack.
  • Compared to other characters, Zero probably has the most love interests:
    • In X4, Zero and Iris are in love with each other.
    • In X8, Zero's Navigator, Layer, shows signs that she has a crush on him many times throughout the game.
    • In the Zero series, Ciel has feelings for him. Also, the Neo Arcadian guardian, Fairy Leviathan, frequently flirts with him prior to their battles.
    • Despite the many love interests, it's never been officially stated that Zero had romantic feelings for them in return, although he seemed to regard Iris with the most emotion.
  • Grolla Seyfarth, a character from a Japanese doujin soft series, Rosenkreuzstilette, bears many allusions to Zero from the Mega Man Zero series.
    • This is actually somewhat ironic, as Grolla's nemesis, Iris Sepperin, resembles Ciel slightly in appearance, but takes after Copy X and X series final bosses Redips and Lumine in status and personality.


  1. "Usually, I would be the one doing the main characters, and Kaji would take care of the sub characters. This time, however, we decided to change things up a bit. I asked Kaji to do Mega Man, and I made the sub character, Zero, my project. I'm sure I've said this in may different places in more than a few different ways, but I really wanted Zero to be a playable character. I wanted to offer a 'different Mega Man,' and possibly a more hardcore game."
    "I wanted to make the character's personality a little more hardcore too, and I knew that if I was working from the design of the traditional Mega Man, I'd be stuck in that whole 'nice guy' image. The whole time I was designing Zero, I was seeing him as the 'new Mega Man.' But I didn't bring that up when I went to submit our designs to my boss. I brought out the X that Kaji designed and said, 'Here's the new Mega Man!' My boss had a very positive reaction to X, and when I brought out the design for Zero, I simply said, '...and this is the sub character.' I figured that would ensure a less critical analysis of Zero and, as a result, I got an immediate OK in the form of, 'Red, huh? Hmm... yeah, that's nice.' (laugh)" -Keiji Inafune
    R20 Rockman & Rockman X Official Complete Works, UDON Entertainment Corp. 2009. pg.6-8. Retrieved on April 7, 2011.
  2. The Reploid Research Lavatory: The Making of the Ultimate Armor
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