Omega

Omega, dubbed "the devil Reploid" or "the ultimate Reploid" is a massive Reploid created during the ending period of the Elf War. He is Dr. Weil's greatest creation and was sent into battle as a last resort action during the war's closing period. He was created to store and manipulate the Dark Elf in order to mass-control Reploids by remote. He plays a major role in the story of Mega Man Zero 3 and has a cameo appearance in Mega Man ZX.

The Elf War
After the Maverick War had been ended by the powers of the Mother Elf by reverting the viral infection of Reploids caused by the Sigma Virus, the scientist Dr. Weil, who researched Zero's body together with an unknown ancestor of Ciel, felt unsatisfied with the result of the solution. Thinking that it wasn't enough to simply cure the Reploids from the virus while they posed still a threat to society due to their free will, he decided to create his own, radical solution: To exterminate every Reploid that did not decide to submit to the humans and regard them as their creators and masters.

To achieve this goal, he had to find someone capable of fullfill his desire, a "messiah" that would destroy every Maverick and teach the Reploids to know their place. For that position, Weil had chosen Zero, who's mindless body was still in his laboratory. He stole the body as well as the Mother Elf. Weil corrupted the Mother Elf, turning her into the Dark Elf to control all the world's Reploids at the same time in order to have them destroy each other. However, even in this corrupted state, the Dark Elf was not powerful enough to control all Reploids at the same time and the Babyelves, small copies of the Dark Elf, were created.

Yet, as Weil desired to use the Dark Elf alone as well as his new messiah, he began constructing a massive exterior armor around the mindless body. The armor boosted the body's attack strength to its limits (although at the cost of manuverabilty and evasiveness) as well as granting it the ability of using the Dark Elf to control all Reploids at the same time, making the Babyelves useless. The body received new weapons, suitable for its size and weight and was given a new conciousness loyal to Weil only: Omega.

Omega is a character from the Mega Man Zero series and is the central antagonist of Mega Man Zero 3.

History
Omega was an extremely powerful reploid created by the scientist Dr.Weil by modifying Zero's original body sometime before the events of the Elf Wars (a massive world wide battle), which preceded the events of Mega Man Zero and in the timeframe of the Mega Man X series.

According to the Japanese Source book, "Rockman Zero Official Complete Works", sometime during the middle of the Maverick Wars, the Maverick Hunter known as Zero decided to seal himself away for 100 years with the specific intention of "removing" a component that he believed still made him a serious danger (Presumably the Virus and his own unique ability to easily pass it on to other reploids, even against his will). During this time period (which may or may not have lasted the intended 100 years), Zero's mind was removed from his body, and his body and the unique properties of the virus were extensively studied for the sake of eventually creating the unique anti-virus Cyber Elf, known then as the Mother Elf, which eventually was used by X to end the Maverick Wars. Eventually, Dr. Weil located this mindless shell, reprogrammed it with the mind of a new reploid, awakened the body's power to its full potential, and created a massive body of armor to contain Zero's original body within its core and control its massive powers. He named this creation Omega. This body was also intended to be compatible with the Mother Elf/Dark Elf in order to enhance its powers even further. Weil used his creation extensively to cause massive destruction during the world-wide conflict known as the Elf Wars. In response, a copy of Zero's body was created, and Zero's dormant mind was loaded into it so that he could fight against Weil and Omega in the Elf Wars.

Although he was powerful, and wreaked havoc in the Elf Wars, he was defeated soundly by Zero and Mega Man X using a Final Strike (this is stated in drama tracks of Remastered Tracks Rockman Zero TELOS) and he was confined to a massive spaceship and sentenced to exile in space, while Weil was banished from Neo Arcadia and forced to live a life of eternal exile.

However, in the events of Mega Man Zero 3, Weil somehow managed to release Omega's ship from orbit and began his plans for revenge on humanity. When the three remaining Guardians came to investigate the crash, Omega promptly fought them and proved to be more than a match for them. He would have killed them outright had Zero not arrived and defeated him. Despite being defeated, however, Omega seemed ready to battle again.

He was promptly stopped by Dr. Weil, who told him that he was to fight with the Guardians from then on as a Neo Arcadian.

Later when Copy X MkII and Dr. Weil found the Dark Elf in a human district, they placed Omega in a gigantic missile and fired him at the Dark Elf's location. Zero attempted to stop it, but failed, and not only did the missile destroy the area but Omega also absorbed the Dark Elf, becoming more powerful, his armour taking on a golden coloration. Harpuia leapt in to try and destroy Omega, but was easily defeated.

Dr. Weil then proceeded to use Omega to take control of all the Reploids in the world with the power of the Dark Elf, until Zero finally confronted him. Zero once again defeated Omega, causing Omega to transform into the three-headed Fusion Omega (one that was Omega's own head, one that resembled X's head and one that resembled Zero's head). However, Zero once again defeated Omega.

The battle had weakened the floor and both Omega's remains and Zero fell down to the floor below, which just happened to be the area in which Zero had lain dormant for a century or more. Weil then revealed that Zero was using a copied body, and revealed that Omega inhabited Zero's original (and presumably more powerful) body. In the last stage of Mega Man Zero 3, after a long battle, Omega was again defeated and Zero would have finished him off had the Dark Elf not interfered. However, with some help, the Dark Elf was released from her curse and Zero could then destroy his original body and Omega with it.

Personality
Omega seems to be a reploid that naturally seems to revel in death and destruction for his enemies, as well as an undying loyalty for his creator. After his exile, Omega also develops a deep hatred for Zero, as well as an inferiority complex, forever trying to prove he is more powerful. He also becomes quite arrogant after he gains a position of power, but in the end is still defeated. His personality might be what was intended for Zero by Dr. Wily before his awakening prior to Mega Man X.

Mega Man ZX
Omega, in Zero's original body, along with several other bosses from the Mega Man Zero series, makes a cameo appearance as a hidden optional boss and corresponding Model (an alternate form the protagonist can transform into) in Mega Man ZX. Unlike the other Models, the Omega Model is not given by a Biometal, but by a "mysterious rock" with properties similar to a Biometal. (Fleuve states it has a "funny glow" as well)

Trivia

 * Before Zero battles with Omega Zero, the latter shouts a Japanese line, "Ware wa meshia nari!" This translates to "I am the messiah!" Omega Zero uses the same line before the player finds and fight him in Mega Man ZX. This fortifies the fact that many of the characters in the Zero series referred to Omega as "The God of Destruction."


 * Omega's armor in the beginning of Zero series emits a glow from the black parts that make up his visor, face, chest, and abdominal region upon defeat, which then seem to heal the armor, and bring the claws upward from the ground back to a levitating position where real arms would be. This could mean that his armor was made with regenerative capabilities. This makes sense in that if the armor were broken, it would have released Omega in his most powerful state (when he was in control of Zero's original body). The regeneration might be to keep the armor active and the armor itself seals and limits Omega's power extensively.


 * It is currently unknown why Zero's original body appears visually different in "Mega Man Zero 3" than it did throughout the X series titles. One would logically assume that his "original" body would have the same appearence that he had in the X series, while his "copy body" retained its look from the Zero series. Some fans speculate that the differences merely reflect the change in art style and should not be considered a factor in the overall story, while others believe that his original body's appearence could have been modified during the time period when it was being researched in order to create the Mother Elf. This could also theoretically account for the look of the copy-body as it would have been modeled off of the most recent visual appearence of the original body. Currently, however, no official canonical explaination for this mystery has been offered by Capcom. The only definitive statements, which were made in the Offial Complete Works sourcebook, suggest that Zero's visual appearence was changed by the Zero series artists to make him appear "more human". Despite the difference in appearences, Zero's X series Japanese voice actor was intentionally used during the final battle to indicate that Omega Zero's body is indeed the "original" Zero.


 * It is unknown if Omega's biometal form in Mega Man ZX is part of the canon story or simply a gameplay extra.