Outdated HOLD ON!
There are file links on this page that are either outdated or broken. This applies to the following download link(s):

  • DuckSS' version

Please replace them with the latest working links!

This article is about the final boss of Mega Man Zero 3 and optional boss from Mega Man ZX. For other characters named Omega, see Omega (disambiguation). For other characters named Zero, see Zero (disambiguation).

Omega Zero
Official Artwork from Mega Man Zero 3




NMario's version
DuckSS' version is currently unavailable


Mega Man

Omega (also known as "Omega Zero", "the devil Reploid", or "the ultimate Reploid"), is Zero's original body, who first appears in Mega Man Zero 3 as both the first and final boss. He appears again in Mega Man ZX as both an optional superboss and as a playable form for the main character, where he is known as Model OX in the latter.

After the creation of the Mother Elf had resulted in the end of the Maverick Wars, Zero had sealed himself away; believing himself to still be a carrier of the Maverick Virus. The creator of the Mother Elf, Dr. Weil, under the belief that reploids were the sole cause of the Maverick Wars and that they had gotten off lightly for their perceived crime, stole Zero's body and removed his consciousness. Zero's consciousness was then replaced with a new Artificial Intelligence that Dr. Weil himself had created, which he had christened "Omega". Knowing what Zero's body was capable of after studying it, Omega was fitted with a massive suit of external armor to both control its power as well as conceal his true form. This armor also served as a conduit to manipulate the reprogrammed Mother Elf, now known as the Dark Elf, to mass-control Reploids remotely, which brought upon the Elf Wars. Once Dr. Weil and Omega were captured and the Elf Wars ended, Omega was sentenced to eternal exile in space. During the events of Mega Man Zero 3, the spacecraft containing Omega crash lands on earth, and is reunited with Dr. Weil. Zero, whose consciousness is now occupying a duplicate body based on his original blueprints, eventually confronts Omega, shedding his external armor and ultimately destroying his original body and Omega with it.

In M.U.G.E.N, Omega has been made by N64Mario and is an extremely cheap character like in Mega Man ZX. He also has made an alternate version of him named Shadow Omega, a faster version of Omega but less powerful.

NMario's Omega Zero

Omega zero stand

Omega plays like in ZX with all his moves, and has a sort of grace period if you hit him, he can take knockback in the air and if you hit him when he's doing Ranbu (Berserk Dance), beware since he has infinite uses of this move in his AI while when player-controlled will take 1 power level away.

Omega also has access to Tenshouha, which can heal Omega alongside briefly making him invulnerable and damaging opponents on contact. The AI will use this relentlessly, requiring heavy pressure by his opponent to keep him from using it.


Hovering the mouse cursor over the Command Input icons will display text that refers to the inputs set in M.U.G.E.N's Key Config.

Icons encased in square brackets [ Button-D ] require the respective button(s) to be held down. Hovering the mouse cursor over the icon displays the hold duration if applicable.


Name Command Input Properties
Tenshouha Button-D (Y)Button-y Heals User
Name Command Input Properties
Messenkou Button-D+(Y)Button-y
Omega zero Messenkou
Name Command Input Properties
Standard slash (X)Button-x Can be followed by itself up to three times
Name Command Input Properties
Ganzanha [ (X)Button-x ] Hold until a yellow aura appears, then release
Name Command Input Properties
Triple Buster Shot [ (Y)Button-y ] Proj
Press twice
Hold until yellow aura appears, then release
Mega Buster Shot


Name Command Input Properties
Ranbu (X)Button-x (X)Button-x Button-F (A)Button-a (Z)Button-z CommandGrab
Uses 1000 Power
Name Command Input Properties
Mettaur Drop (A)Button-a+(X)Button-x OHKO
Can only be used once
Uses 3000 Power
Name Command Input Properties
Ultra Berserk Dance (Z)Button-z (A)Button-a Button-F (X)Button-x (X)Button-x Requires Hyper Mode mode to be active
Mash (X)Button-x to add more hits while the screen darkens
Uses 3000 Power


Name Command Input Properties
Hyper Mode Button-xyz3 Can only be used once
Increases speed for a short time
Requires 3000 Power
Users 0 Power
Mega Man
Mega Man Classic Characters BassCrash ManDr. WilyElec ManGuts ManHornet ManMagnet ManMega ManMettaurNapalm ManProto ManRollShadow ManTerra
Mega Man X Characters Blaze HeatnixChill PenguinFlame HyenardMega Man XVileZero
Mega Man Zero Characters OmegaZero
Mega Man Legends Characters Mega Man Volnutt
Stages Air Man's StageArea A - ForestBlizzard Buffalo StageCentral HighwayCut Man's StageCrash Man's StageDr. Wily's BaseDr. Wily's Flying FortressElec Man's StageFire Man's StageHeat Man's StageIce Man's StageInami TempleKattelox IslandLight LabsMetalman’s stageTomahawk Man StageYellow Devil Stage