Zero (Mega Man)

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This article is about the Mega Man character. For other uses, see Zero (disambiguation).
Zero MMX6.png
Official artwork of Zero from Mega Man X5.
Universe Mega Man
Debut Mega Man X (1993)
Smash Bros. appearances SSB4
Most recent non-Smash appearance Teppen (2019)
Console/platform of origin Super Nintendo Entertainment System
Species Android
Gender Male
English voice actor Johnny Yong Bosch
Japanese voice actor Ryōtarō Okiayu
Article on Wikipedia Zero (Mega Man)

Zero (ゼロ, Zero) is a central character in the Mega Man X sub-series of the Mega Man universe, and the protagonist of the Mega Man Zero sub-series.


Awakened Zero using Genmu Zero.

Along with X, Zero was one of the first robots to have complete free will and thinking capabilities of a human, known as Reploids. It was revealed in Mega Man X4 that he was created by Dr. Wily to destroy the original Mega Man, but was too unstable and violent to be controlled, forcing Dr. Wily to seal him in a capsule. Later, in the year 21XX, a group of Maverick Hunters found Dr. Wily's lab and released Zero. As he still wasn't cured of his violent nature, Zero defeated those Maverick Hunters, causing him to be labeled as a Maverick and forcing the then-leader, Sigma, to fight him one-on-one. Zero lost the fight, but he also became stable from his Maverick-like state after the duel. On the other hand, Sigma was infected with the Maverick Virus and develop Sigma Virus with his newfound twisted will, causing a change in roles between him and Zero. Zero joined the Maverick Hunters, becoming an S-rank Hunter as well taking the role of a mentor and friend to X.

After Sigma was finally defeated once and for all, Zero and X were involved in a new conflict called the "Elf Wars" due to its use of the electronic life-forms known as cyber-elves. Zero, having learned that his code was the original source of the Maverick outbreak, went into hybernation while scientists worked on a way to remove the malicious code. In that time, he was given a second body to inhabit, which he was awakened in by the human scientist Ciel, seeking his aid to defeat her rebellious creation, a copy of X. While Zero helps with the resistance group that Ciel leads, he soon learns that his original body had been stolen by a mad scientist named Dr. Weil, naming the original body as "Omega". Zero destroys Omega and later defeats Weil, despite knowing the fact that he was human too, putting an end to the Robot Wars that Wily had begun centuries ago.

In Ultimate, all of the techniques Zero uses as an Assist Trophy originate from the Mega Man X series:

  • His triple slash attack first debuted in Mega Man X4, where it is his most basic attack, with each of the slashes being activated with additional presses of the attack button. It has since been present in all of Zero's mainline playable appearances, including the Mega Man Zero series, although the slashes themselves differ across games. In Ultimate, he uses the version seen in Mega Man X4 and Mega Man X5.
  • Ryuenjin is one of Zero's special techniques in Mega Man X4. It is obtained by defeating Magma Dragoon, and performed by pressing the special move button while holding up. In addition to dealing damage, it can burn certain stage elements, giving Zero access to hidden items, and is notably his only attack that can damage Sigma, the final boss, in his first form. Zero also uses Ryuenjin in several of his crossover appearances, such as Tatsunoko vs. Capcom and Marvel vs. Capcom 3.
  • Kuenzan is another of Zero's techniques in Mega Man X4. It is obtained by defeating Split Mushroom, after which it permanently replaces his standard midair attack. Unlike in Ultimate, Zero only somersaults once when using it instead of three times. It also appears as an upgrade in the Mega Man Zero series, and subsequent games of the Mega Man X series feature similar, circular slash techniques, such as C-Sword in X5, Ensuizan in X6, and Rasetsusen in X8.
  • Genmu Zero is a technique available to Zero only in his awakened form in Mega Man X5, when he fights X near the end of the game. He uses it after the battle has gone on for too long, and functions as an unavoidable attack that instantly kills X. In crossovers such as the Marvel vs. Capcom series, Zero can use this attack in his original form, and Nightmare Zero in Mega Man X6 uses a similar attack known as Genmu Zero Kai, though both are considerably weaker than the version seen in X5.

Zero's double jump and air dash, which he uses in Ultimate, were originally special techniques in Mega Man X4, known as the Kuenbu and Hienkyaku (respectively), that had to be obtained by defeating Mavericks (Split Mushroom and Jet Stingray). In later games, however, they have been available to him from the beginning.

In Super Smash Bros. 4[edit]

As a costume[edit]

A Mii Swordfighter dressed as Zero.

Zero is the basis for a paid downloadable content Mii Costume for Mii Swordfighters. Nintendo also released a QR code for those who wish to have the exact Mii used in the costume's advertising.


Zero's trophy is exclusive to the Wii U version, under the name "Zero (Mega Man)" for disambiguation.

Trophy of Zero in Super Smash Bros. for Wii U.

North America A close friend and mentor to X, Zero first appeared in Mega Man X. He's a Rank SA Maverick Hunter and is capable of instantly learning new moves from his enemies. Zero has great faith in X's hidden potential, and together they fight to take down Sigma and defeat his rebelling forces.
Europe A powerful SA-rank Maverick Hunter who can instantly learn new moves from his enemies. Zero first made an appearance in Mega Man X, and is a close friend and mentor of X, that game's protagonist. He believes in X's hidden potential, and together they fight to take down Sigma and his renegade forces.

SNES: Mega Man X (01/1994)
GB Advance: Mega Man Zero (09/2002)

In Super Smash Bros. Ultimate[edit]

As an Assist Trophy[edit]

He appears from the Mega Man series. Just like in his original appearance, he uses his learned moves to wreak havoc on stage!
Super Smash Blog, Super Smash Bros. Ultimate Official Site
Zero attacking Ridley with Genmu Zero on Midgar.

Zero appears as an Assist Trophy character. Upon being summoned, he says "Fight's on!" and chases opponents to attack them using a variety of techniques:

  • A series of three slashes with his Z-Saber, much like playable characters' neutral attacks, with the slashes linking into each other. However, opponents are able to air dodge inbetween the second and third slashes. The slashes deal 5%, 7%, and 9% respectively, for a total of 21% damage, and the third slash has enough knockback to KO at around 125% from center stage.
  • Ryuenjin (龍炎刃, Dragon Flame Blade): Zero jumps and slashes above himself with his Z-Saber engulfed in flames. Much like Roy's Blazer, it drags opponents along in multiple hits, then launches them upward at the peak of the jump. It deals up to 5 hits, with the first dealing 6%, the second to fourth dealing 1.2%, and the fifth dealing 10%, for a total of 19.6% damage. The final hit is powerful enough to KO opponents under 100% if all hits connect.
  • Kuenzan (空円斬, Air Circling Slash): Performs three quick somersaulting slashes in midair with the Z-Saber. The first two hits deal 4%, then the third hit deals 12%, for a total of 20% damage. The third hit is powerful enough to KO under 100% from center stage.
  • Genmu Zero (幻夢零, Phantasm Zero): Holds the Z-Saber up, then slashes with it to fire a large, green blade beam forward. The Z-Saber itself deals 15%, while the beam deals 20%. This is Zero's most powerful attack, with the beam KOing opponents as low as 70% from center stage. He often uses it when opponents are at a long distance away from him, especially if they are at high percentages. The beam can be reflected and absorbed.

Much like in his series, Zero has a double jump, and can move with high-speed dashes both on the ground and in the air. He is also one of the Assist Trophies capable of performing directional air dodges. For all his techniques except the triple slash, Zero shouts their names when using them. He will then say "Back to base!" when departing. He also can be defeated, when he is defeated he gets blast KO'd but also explodes into orange orbs, a reference to his death animation in some of his appearances.

As a costume[edit]

A Mii Swordfighter dressed as Zero.

Zero appears as a downloadable content Mii Costume for Mii Swordfighters, released with the third wave of Mii Fighters.


No. Image Name Type Class Slot Ability Series
Zero (Zero Buster)
★★ 2 Can Be Enhanced at Lv. 99 Mega Man X Series
Zero Zsaber Spirit.png
Zero (Z-Saber)
★★★★ 2 Weapon Attack & Move Speed ↑
Mega Man Zero Spirit.png
Mega Man Zero
★★★ 2 Sword Attack ↑ Mega Man Zero Series



  • The Mii used to show Zero's costume has green eyes, rather than the blue eyes that Zero has in most games.
    • In Mega Man X4, Zero is seen with green eyes in the animated cutscenes; however, official artwork of X4 shows Zero with blue eyes.
  • Zero is the only Mega Man character with a trophy that is neither from the classic Mega Man series nor part of Mega Man's Final Smash.
  • Zero's reveal as an Assist Trophy, with him defeating a Ditto version of an Inkling, is a reference to fake, or "soulless", copies of Zero and X that Zero has fought over the years.
  • Zero is the only Mega Man character to use a voice actor in the Super Smash Bros. series.
  • Although the Training Mode menu states that Zero will unleash Genmu Zero when he's about to leave, his departure and when he will perform the attack are not connected.
  • Zero is one of the two new Assist Trophy characters in Ultimate to use newly recorded voice clips, instead of recycled voice clips, the other is Alucard.
  • Zero, Andross, Nintendog, Waluigi are tied for most spirits out of all assist trophies, with a total of 3.

See also[edit]