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Villain Overview

It is said that there is only one true ruler of Outworld… and that ruler had returned.
~ Shujinko about Outworld's first and true ruler known as Onaga the Dragon King, in the Mortal Kombat: Deception intro.

Onaga, also known as The Dragon King, is a major antagonist in the Mortal Kombat franchise, serving as the unseen overarching antagonist of Mortal Kombat: Deadly Alliance, the main antagonist of Mortal Kombat: Deception, a major antagonist in Mortal Kombat: Armageddon, and a cameo character in Mortal Kombat (2011).

He is the first ruler of Outworld that was betrayed and killed by his advisor Shao Kahn, resulting in Kahn usurping his empire and deciding to expand it across all realms. He would later be resurrected, seeking revenge upon Kahn and to conquer realms for himself.

He was voiced by Nigel Casey in the original timeline.


Onaga the Dragon King

Onaga is largely characterized by his desire for ultimate power. After his resurrection, he immediately sought out to reclaim both his throne to Outworld and his Army. In Deception (hence the game's title), he displays a cunning, tactical, and manipulative side - acting as a spiritual avatar named Damashi, whom he uses to manipulate and trick Shujinko for many years into gathering all six Kamidogu.

Onaga has a deep seated animosity towards Shao Kahn, since the latter was the cause of his death. This vengeful and malevolent nature in Armageddon came full circle, choosing to ignore the fire elemental Blaze's prize of godhood in favor of settling the score between them. In his non-canon Armageddon ending, he unleashes his wrath against his former chief advisor to the point of near death, but opts to leave Shao Kahn in his very own dungeon, tormented by those who once pledged their allegiance to him.

Emperor Onaga, the late Dragon King of Outworld, as seen in Lord Raiden's Mortal Kombat: Deadly Alliance ending.

Onaga's main goal is to regain what was taken from him, to seek revenge on Emperor Shao Kahn for his betrayal. He also wishes to become the One Being in Deception and use Blaze's power to get revenge and became a god in Armageddon. Onaga wants to keep his title of emperor, as well as both his army and the entire Outworld civilization's loyalty to him, and does not want anyone to take that away from him. He also wants to become the ultimate being become greater then everyone else and have no one that can rival, defeat or challenge him.

Like many other fighters in Armageddon, Onaga wants the divine power of Blaze to rule things. Also like many others Onaga wants the power of Blaze to regain what he lost. Many wish to use the power of Blaze to become a god Onaga's goal to claim the power of Blaze is similar to many others. But while most of the kombatants want the power to become champion or the best fighter. Onaga wants more then just becoming champion he wants to be the greatest being ever. Some wishes to steal the power all the other fighters. While some wish to become a destroyer. Onaga sets quest for Blaze's power to the highest wish out of all the other kombatants.



The royal Helmet of the late Emperor Onaga.

I am Onaga, the Dragon King of Outworld and soon to be ruler of all that exists! I must thank you for bringing me so much power. The Kamidogu... are mine!
~ Onaga to Shujinko.

Millennia ago, Onaga, also known as the Dragon King, was the true ruler of Outworld. Hoping to gain eternal life, he ordered the last known dragon egg to be kept, hoping that the blood of an infant Great Dragon, the last of the forgotten Great Dragons, would grant him immortality.

The Lost Tomb, pyramidal mausoleum of Onaga the Dragon King.

The interiors of the Lost Tomb where the late Emperor Onaga's royal sarcophagus alongside his mummified army is housed.

However, he died before this could be fulfilled. Shao Kahn, one of his chief advisers, had him poisoned and took over his rule of Outworld. His army, however, was kept in a mummified state after their ritual mass suicide and at the Lost Tomb in the Golden Desert outside the obscure Sarna Ruins. This army was considered undefeatable because Onaga possessed the innate power to raise the dead. By means of constant resurrection during battles, his army truly was undefeatable. During the millennia that followed, Onaga was apparently forgotten.

Quite some time before Liu Kang's victory over Goro and Shang Tsung at the Shaolin Mortal Kombat tournament, Onaga communicated through death to Shujinko through an avatar named Damashi. He persuaded Shujinko to embark on a quest to unite the Kamidogu, claiming he was carrying out the will of the Elder Gods, as well as granting him the power to learn the fighting techniques of warriors he encountered. Shujinko readily embarked on his quest, beginning to set in motion events that Onaga hoped would lead to his eventual return to power.

The Lava Shrine

The Lava Shrine's altar area.

Additionally, a sect of holy men still dedicated to had been guarding the egg of the last Great Dragon in a chamber of molten lava inside a hollow volcano in Outworld. During the events of Mortal Kombat II, they captured the Outworld elemental Blaze, who was forced to guard the egg until it was ready to hatch and revive the king.

A few years later, Quan Chi and Shang Tsung, the Deadly Alliance, used their powers to resurrect Onaga's army at Shang Tsung's new palace outside the young warrioress Li Mei's home village of Sun Do. Their plan was to use this army to conquer Outworld and eventually, all the other realms as well. Raiden embarked on a mission with the Earthrealm warriors to Outworld to stop their plans, but his attempt ultimately failed. His comrades were slain and he himself was defeated by the Deadly Alliance in person. However, their victory was short-lived. The vampire Nitara convinced Reptile to help her access the chamber of the last dragon egg. The chamber also held an orb that would separate Outworld from the vampire realm. After she destroyed the orb, Nitara left, but Reptile, feeling betrayed, arrived almost as soon as she transported herself to her native realm. At that moment, the egg hatched and sent its energy into Reptile, which fulfilled the prophecy of Onaga's return. The Dragon King, as such, used the transformed body of Reptile as a host, after he had gained the ability to rise himself from the dead through Shujinko's actions.

Just as his army stood ready to receive commands from Quan Chi, who had emerged victorious in a battle with his former ally Shang Tsung, Onaga returned. Even the combined might of Shang Tsung, Quan Chi and Raiden was not sufficient to defeat him. Raiden's desperate last measure was to use a self-destruct magic that released his godly essence, but that only succeeded in destroying Onaga's army and, presumably, the two sorcerers. Onaga was unaffected due to being resistant to all forms of magic and was now in possession of the amulet Quan Chi previously held.

It was at this time in which Shujinko, finally realizing he had been duped, took action. He traveled through the realms in order to find recruits to fight Onaga. All of these warriors came from extremely diverse origins but Shujinko planned to unite them to fight this enormous threat, who was now in possession of the six Kamidogu (found in the Temple background) and attempting to unite all of them into one.

Unbeknownst to Onaga, Shujinko had united many warriors and absorbed their fighting abilities, and was planning an attack on the Dragon King's stronghold. Shujinko had destroyed each of the Kamidogu, giving him the opportunity to eliminate Onaga. But as Shujinko landed the final blow, Onaga's soul was forced from Reptile's body and dragged down to the Netherrealm, where he was bound by Nightwolf. He remained there for a long time until he was discovered by Lord Shinnok, who had also been trapped there. The fallen Elder God proposed that he would give Onaga his place at the Outworld throne in exchange for his help in returning his own power. Onaga reluctantly agreed, for the time being.

Shinnok informed Onaga about Blaze and the godlike power that would be given upon whoever defeated him in kombat. He proposed that the Dragon King join with Quan Chi, Shang Tsung, and Shao Kahn so that he may stand a better chance at attaining the power. Onaga did not trust Shinnok, and suspected that the former Elder God had something else up his sleeve. But with no other alternative to escape the Netherrealm, he accepted. Satisfied, Shinnok opened a portal to Outworld and sent Onaga back through, where he met with Quan Chi, Shang Tsung, and Shao Kahn and allied with them. He vowed that he would take Blaze's prize for himself, and would destroy everyone who ever stood in his way.

However, Onaga's desire for revenge against Shao Kahn proved to be greater than his desire to gain Blaze's prize. When Shao Kahn was knocked towards the edge of the Pyramid of Argus, Onaga grabbed him and flew far away from the pyramid. His former adviser managed to escape and return to the battle, and Onaga was killed at some point during the battle.

Alternate Timeline

Mortal Kombat 2011

The events from the original timeline of Onaga can be seen in Raiden's visions. Future Raiden sent the visions to past Raiden as a warning about Onaga's return and other events of what's to come

Mortal Kombat X Comics

Onaga was first mentioned in MKX comics by Daegon, the supreme leader of Red Dragon Clan who serves the Dragon King. When Goro comes to seek Onaga and his power to regenerate severed limbs, Daegon confirms Goro's suspicion.

Mortal Kombat 11

Although Goro made an alliance with the Red Dragon Clan, Daegon and Onaga in the MKX comics, he is found dead on Shang Tsung's Island. Onaga is mentioned many times in the game but he does never make a appearance. Raiden says that the young Shao Kahn who is working for Kronika is that Shao Kahn who still uses some of Onaga's abilities but Kitana is not worried. Many fighters talk about the Dragon King's return sometime in the future but most of them think that are prepared and ready to face him.

In Kung Lao's MK11 ending, within an alternate timeline where the Great Kung Lao, Kung Lao's warrior ancestor only lived and won the Earthrealm Mortal Kombat tournament against Prince Goro of the Shokan people and a giant statue of him built in his honor at the Koliseum within the now utopian Outworld civilization centuries later, the mighty Dragon King, Onaga himself, emerged only to find himself slain by the new time god Kung Lao who created this timeline and is now known as the Warrior Supreme in all history.

Powers and Abilities

Onaga's might in the past was infamous to the point that Shao Kahn himself was fearful of facing the Dragon King in direct combat, instead opting to resort to underhanded tactics. After claiming the six Kamidogu, Onaga proved practically unstoppable, since he took the attacks of Shang Tsung, Quan Chi, and Raiden all at once with it only succeeding in slowing him down, as well as all of Raiden's godly power, which didn't even leave a scratch on him.

The Dragon King's Heart from Mortal Kombat: Deception.

The Dragon King's Heart from Mortal Kombat 11.

Being a dragon, Onaga can fire blasts of fire out of his mouth and fly, as well as use his wings to create powerful gusts, and he also possesses necromantic powers (which resonating in his beating heart which he used to give his army the reputation of being undefeatable. Onaga seems to possess some degree of magic, since he could create an avatar of himself anywhere he wants (Damashi).

In his Deception ending, Onaga had successfully became the One Being, after defeating all of the other fighters. Another testament to that ending was that even the Elder Gods themselves were helpless against him and fled in fear before him.

In Mortal Kombat X (Comic Series), Onaga has the power to regenerate lost limbs after having one removed, an ability even Goro himself sought out to regrow his own arms, after having them ripped off from his battle against Kotal Kahn.

The Dragon King's Army

The Dragon King's Army.

The Dragon King's Army (also sometimes known as the Army of the Dragon King or the Army of Onaga) is an army of long dead soldiers in samurai uniforms who are native Outworlders made up of the once undefeatable empire of Onaga the Dragon King. They are an antagonistic faction in Mortal Kombat: Deadly Alliance. Because they are undead, they are able to come back from the dead after each defeat/death (via either the Onaga's Heart of the Amulet of Shinnok). Their only objective is to serve whoever resurrected them and/or possesses the Amulet of Shinnok that controlled their spirits (formerly). Once Onaga gets control of them they aid Onaga in reclaiming his kingdom of Outworld and destroy Shao Kahn and all who followed him, conquer all realms and destroy all enemies in the name of the Dragon King.



  • Reptile (original timeline)
  • Princess Kitana (original timeline under his control)
  • Jax Briggs (original timeline under his control)
  • Sonya Blade (original timeline under his control)
  • Johnny Cage (original timeline under his control)
  • Kung Lao (original timeline under his control)
  • The One Being
  • Baraka (formerly, currently working for Kitana Kahn)
  • Tarkata
  • Li Mei (in her MKD ending)
  • Daegon (currently)
  • Red Dragon Clan (currently)
  • Goro (dead)
  • Hotaru
  • Skarlet (MIA)
  • Rain (MIA)
  • Noob Saibot (MIA)
  • Tanya (MIA)
  • Titans


  • Shao Kahn (former ally turned enemy killed by Raiden and the Elder Gods)
  • Raiden (currently retired mortal advisor to Liu Kang)
  • The Elder Gods (betrayed and defeated by Kronika)
  • Liu Kang (young Liu Kang from original timeline currently a god)
  • Kung Lao (young Kung Lao from original timeline current leader of the Shaolin Monks)
  • Kitana (young Kitana from original timeline currently Kitana Khan leader of Outworld)
  • Nightwolf
  • Johnny Cage
  • Sonya Blade
  • Jax Briggs
  • Jade
  • Queen Sindel
  • Kitana
  • Smoke
  • Scorpion
  • Sub-Zero
  • Havik
  • Kung Lao
  • Fujin
  • Ermac
  • Earthrealm heroes
  • Bo' Rai Cho
  • Frost
  • Sareena
  • Fujin


  • Onaga appeared within Raiden's visions in Mortal Kombat (2011). In that vision, he was seen with the corrupted Raiden, Shao Kahn, Shang Tsung, and Quan Chi, discussing their "alliance" concerning the Battle of Armageddon.
  • Out of all the endbosses in the Mortal Kombat series, Onaga is the first one with a bestial appearance, unlike Shinnok or Shao Kahn.
  • The Dragon King's Army are seemingly loosely based on the Terracotta Army.
  • In the production gallery of Mortal Kombat: Deception, there exists a character called the "Undead General", an Outworlder who is part of the Dragon King's Army.

External Links


           Kombat2.png MortalKombat.png Villains Kombat2.png

Main Villains
Blaze | Daegon | Dark Kahn | Havik | Kronika | Onaga | One Being | Quan Chi | Shang Tsung | Shao Kahn | Shinnok

Secondary Villains
Cetrion | D'Vorah | Geras | Goro | Kintaro | Lex Luthor | Noob Saibot | Sindel

Other Villains
Baraka | Chameleon | Cyrax | Drahmin | Ermac | Erron Black | Frost | Hotaru | Hsu Hao | Jade | Jarek | Kabal | Kano | Kira | Kobra | Kollector | Mavado | Mileena | Moloch | Motaro | Rain | Reiko | Reptile | Scorpion | Sektor | Sheeva | Skarlet | Smoke | Tanya | Tremor | Triborg

Undead Villains
Jade | Kabal | Kitana | Kung Lao | Kurtis Stryker | Liu Kang | Nightwolf | Sindel | Smoke

Guest Star Villains
Alien | Catwoman | Darkseid | Deathstroke | Freddy Krueger | Jason Voorhees | John Rambo | Joker | Kratos | Leatherface | Predator | Terminator

Non Playable Villains
Forrest Fox | Jataaka | Kia | Lin Kuei Grandmaster | Lucifer | Malebolgia | No Face | Oni Warlord | Rojack | Ruutuu

Evil Races
Centaurians | Demons | Dragons | Hellspawn | Kytinn | Oni | Shokan | Tarkata | Tormentors | Wraiths | Zombies

Evil Organizations
Army of Darkness | Black Dragon Clan | Brotherhood of Shadow | Cyber Ninjas | Dragon King's Army | Festival of Death | Forces of Darkness | Kahn Guards | Masked Guards | Red Dragon Clan | Shaakans | Shadow Assassins | Shadow Priests | Tekunin

Mortal Kombat: The Journey Begins (1995): Shang Tsung | Goro
Mortal Kombat (1995): Shang Tsung | Kano | Goro | Sub-Zero | Scorpion | Reptile | Shao Kahn
Mortal Kombat: Annihilation: Shao Kahn | Sindel | Shinnok | Mileena | Motaro | Sheeva | Ermac | Jade | Baraka | Cyrax | Smoke | Scorpion | Noob Saibot | Reptile | Rain
Mortal Kombat: Rebirth: Shang Tsung | Sub-Zero | Reptile | Baraka
Mortal Kombat: Legacy: Gadsen | Liu Kang
Mortal Kombat Legends: Scorpion's Revenge: Scorpion | Quan Chi | Shang Tsung | Goro | Shao Kahn | Kano | Baraka | Reptile | Moloch | Motaro | One Being
Mortal Kombat (2021): Shang Tsung | Sub-Zero | Mileena | Reiko | Kano | Kabal | Goro | Reptile | Nitara
Mortal Kombat Legends: Battle of the Realms: Shao Kahn | Shinnok | Shang Tsung | One Being | Scorpion | Lin Kuei Grandmaster | Sektor | Cyrax | Mileena | Smoke | Reiko | Kintaro | Jade | D'Vorah

Mortal Kombat: Defenders of the Realm: Hideyoshi | Komodai | Oniro | Ruby | Zaggot | Zara | Zenkaro
Mortal Kombat: Conquest: Bannak | Baron Reyland | Cilene | Jola | Kebral | Kiri and Ankha | Noob Saibot | Quan Chi | Queen Kreeya | Peron | Qali | Scorpion | Reptile | Siann, Mika and Sora | Sub-Zero | Vorpax