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Demiurge large

Demiurge's design originating from Shin Megami Tensei: Devil Summoner

—Demiurge, Shin Megami Tensei: Strange Journey

The Demiurge (デミウルゴス, Demiurugosu)? , also known as Yaldabaoth (ヤルダバオート, Yarudabaōto)?, is a recurring demon in the series.


Gnosticism portrays Demiurge as an inferior "evil" god who created the world who appears as the "God" of the Old Testament. He was also known by different Gnostic teachings as Adam Kadmon, Choronzon, Samael, Saklas, or Yaldabaoth, "Son of Chaos". He is said to have been the devil, but some sects consider them to be two completely different entities.

In most schools of Gnosticism Demiurge was created by Sophia, due to her exile from the pleroma, made matter and soul, which made her long to be back in the Pleroma. Demiurge was created from these feelings, and he created the physical world, making humans ignorant of Sophia, yet she infuses some spiritual spark into humanity.

The concept of a Demiurge is that it is an artisan figure responsible for the fashioning and maintenance of the physical universe. Even if it's a fashioner, it isn't a creator figure in a monotheistic sense: the demiurge itself and the material it uses to create and fashion the universe are considered uncreated and eternal or the product of another being, depending on the system.



Shin Megami Tensei: NINEEdit

Known as Yaldabaoth, it is the ruler of Idea Space and resides in Paradise. In every route he is the final boss. During the battle against him his body loses the gold plating as it is chipped away with damage, revealing his true black body. His body is eventually destroyed, with his head detaching from it before its destruction and continues the fight.

Shin Megami Tensei: Strange JourneyEdit

"An imperfect god of Gnosticism who created the material world.
According to Gnostics of the Roman Empire, the Demiurge proclaims himself as God; when Adam and Eve gain "knowledge," he cast them out in anger. The Demiurge wishes for the souls of humans to be trapped in the material world forever.
Shin Megami Tensei: Strange Journey Compendium

Demiurge appears in the final EX Mission of Strange Journey, False God in Chains, as the game's Ultimate Boss. In this incarnation, he is a shard of the power of God, shattered from the whole after a battle with the Mothers of the Schwarzwelt, which resulted in Humanity opposing His will and making it harder for him to reassemble himself. Another fragment, a powerful angel, succeeded in convincing the Protagonist to kill Alilat, one of the wardens of the power, and open the sealed gate in the subterranean levels of Sector Grus to reach the immense monster holding the remains of the original power.

In the way to the hidden lair, a female voice will plead with the Protagonist to turn back. The voice will remain unheeded if one chooses to proceed to the final sanctum. Once both the Angel and the Protagonist reach Demiurge's lair, he will be invisible unless the Protagonist has acquired the final Enemy Search App from a rare forma in Sector Horologium. However, if the characteristics are met, Demiurge will appear, furious with the Angel and swatting him away, leaving only the Protagonist to confront the crazed monstrosity.

Demiurge does not only have the strongest elemental spells (Agi Gate, Bufu Gate, Zio Gate, and Garu Gate), but boasts Mahamaon, Mamudoon, Mother's Kiss, Dekunda, Heaven's Strike and Big Bang; additionally, it repels all attacks save for Almighty-type except a single type he is weak against (said type cycles through the battle), making him an extraordinarily difficult battle. In addition, he's fast and powerful enough to constantly evade most attacks and can even cast Diarama to give himself a hitpoint shield.

Following his destruction, he can be fused through Special Fusion by a combination of Metatron, Samael and Hachiman.

The female voice will speak once again as the Angel and the Demiurge's power are fusing, imploring the Protagonist to switch off his visor so she can seal off the two entities before they can successfully combine. This request can be indeed bidden, with the two being shut off in impotent rage as they are cut off from the Schwarzwelt.

However, if the Angel successfully absorbs the Demiurge's power, he gains the Demiurge's appearance and his name changes to "Refined Voice". Refined Voice warns that the true enemy is the spirit of Earth itself and, if the Protagonist fails to defeat it, he'll protect humanity himself as long as the souls of men are in tune with the Holy Spirit. If Law-aligned, the completed Demiurge will offer to join the Protagonist in his quest to destroy Mem Aleph and bring about the World of Law. The female voice will speak once again, lamenting that the destruction of the seal is a catastrophe, before becoming completely silent.

In either case, the Protagonist will be rewarded with the Chakra Elixir.

Shin Megami Tensei IVEdit

The Demiurge is the target of the Chaos-exclusive Challenge Quest The Voice of Arrogant "Evil" given by Lucifer. Lucifer describes him in the quest details as an entity that broke away from God to rule a silent world. He is fought at the Sky Tower's 2nd Observation Deck, where his presence is warping the space around him. The Demiurge emerges from his realm, knowing that he has been forced to materialize and that Lucifer had "beguiled" Flynn, who he calls one of his creations, into opposing him, and notes that the fallen angel still relies on "cheap tricks".

He declares that he shall bring the lightning of punishment down upon the symbols of evil, demons, and mankind, intending to slay Flynn for straying from the path of justice. At the beginning of the battle he states that his lightning will course through them until nothing is left but ash.

As the Demiurge is defeated, he says that as long as Flynn is a child of man, he will remain a prisoner both in body and spirit, so he should give up, become silent, and be cursed, crumbling afterwards. Lucifer appears after the battle and is impressed at how Flynn defeated him and that he is the only human to have ever been able to handle his requests, and that with the Demiurge's destruction, Flynn's spiritual powers should have risen notably. Lucifer informs Flynn that the Demiurge was merely a Godly Spirit as a small part of the creator and that the true enemy is far greater.

Shin Megami Tensei: Devil SummonerEdit

Seichii Yamashiro is the Demiurge's human guise, an influential senator of Hirasaka City and one of the main driving forces behind the city's redevelopment project. The project, supposedly in the name of progress and modernity, would destroy many shrines built around the city which had been used to seal Inaruna's wrathful spirit. Yamashiro works alongside Sid Davis to capture Kumiko Hatano, who would be a vessel for Inaruna. When confronted by the protagonist in the senate chamber, Sid escapes into the Fake Astral Plane with Kumiko and Yamashiro reveals his true form as the Demiurge and attempts to kill him. However, the Demiurge is defeated and Rei Reiho teleports the hero to the Fake Astral Plane using the same magic circle that Sid used.

Persona 5Edit

Yaldabaoth impersonates Igor, who was imprisoned, since the start of the game story. After being discovered he then takes the role of the game's final boss. He is the Conductor of the criminal conspiracy to put Masayoshi Shido into political power, and sponsored the Phantom Thieves as a thought experiment and game to see if their salvation of the world as is or Goro Akechi's desire to destroy and recreate the world was stronger. His true nature is hinted at throughout the game by his colder attitude than the real Igor, his voice, and his inability to perform Persona Fusions, relying on Caroline and Justine instead. Once he drops the act, he reveals himself to have a power-hungry, self-righteous personality with a tendency to toy with humanity out of sheer sadism. When Goro and later Shido are defeated, he decides that the world should be "saved", but due to his egotism believes salvation of the world is him taking control of existence and removing everyone with chaos in their hearts from it. He awakens his true body in Mementos and summons a Palace that he later overlays over the physical world, granting him the ability to transform his lies into truth, influencing the minds of people into despair and complacency, and wiping away the existence of his enemies-unless people believe in his enemies enough to "disprove" his lie that the Thieves do not actually exist, as Yuki Mishima manages to convince the readers of his website that things are not hopeless and stabilizing the existence of the Thieves in the Palace before Yaldabaoth finishes erasing them.

He is described as being the manifestation of humanity's subconscious desire to be ruled over by others and initially takes the form of the Holy Grail. When in human form, he appears identical to Igor, but the pupils of his eyes turn golden when he admits his true identity, and he is prone to far more mocking facial expressions.


Shin Megami Tensei: Strange JourneyEdit

Race Alignment Level HP MP
Strength 66
Magic 64
Vitality 59
Agility 60
Luck 53
Vile Dark-Law 94 766
Attack Type Physical Gun Fire Ice Electricity Wind Expel Curse Almighty
Single Foe/1/Physical/None - - Strong Strong Strong Strong Null Null -
Poison Paralyze Stone Strain Sleep Charm Mute Fear Bomb Rage
50% 50% 50% 50% 50% 50% 50% 50% 50% -
Natural Skills
Jihad Luster Candy Victory Cry
D-Source Skills
Repel Phys Jihad Gun Amp

Race Alignment Level HP MP
Strength 75
Magic 75
Vitality 75
Agility 75
Luck 75
Vile Dark-Law 99 20,000
Attack Type Physical Gun Fire Ice Electricity Wind Expel Curse Almighty
- Changes Changes Changes Changes Changes Changes Null Null -
Poison Paralyze Stone Strain Sleep Charm Mute Fear Bomb Rage
- - - - - - - - - -
List of Skills
Mahamaon Mamudoon Dekunda
Diarama Big Bang Agi Gate
Bufu Gate Zio Gate Garu Gate
Luster Candy Disaster Cycle Jihad

Shin Megami Tensei IVEdit

Race Level HP MP
Strength 101
Dexterity 101
Magic 101
Agility 101
Luck 101
Vile 95 735 329
Physical Phys Gun Gun Fire Fire Ice Ice Electricity Elec Force Force Light Light Dark Dark
- - Resist Resist Resist Resist Null Null
Ailment Resistance -
Normal Attack Phys x1 hits, 1 enemy
Related quest The Voice of Arrogant "Evil" (Chaos)
Special fusion Herald Metatron x Deity Hachiman x Fallen Samael
List of Skills
Skill Cost Effect Level
Antichthon 80 MP Severe almighty damage and Debilitate to all foes. Innate
Thunder Reign 22 MP Severe elec damage to all foes. Innate
Debilitate 50 MP Debuffs all foes' attack, defense and agility by 1 level. Innate
Judgement Light 45 MP 80% instantly kills all foes. Light-type. 96
Null Mind Auto Immunity against sleep and panic. 97

Shin Megami Tensei IV: ApocalypseEdit

Race Level HP MP
Strength 116
Dexterity 98
Magic 116
Agility 110
Luck 82
Vile 95 748 320
Physical Phys Gun Gun Fire Fire Ice Ice Electricity Elec Force Force Light Light Dark Dark
- - Resist Resist Resist Resist - Drain
Ailment Resistance None
Normal Attack Phys x1 hit, 1 enemy
Skill Affinities Almighty Almighty +4 · Fire Fire +3 · Ice Ice +3 · Electricity Electricity +3 · Force Force +3 · Dark Dark +3 ·
Ailment Ailment +2 · Physical Physical -3 · Gun Gun -3 · Light Light -3 · Healing Healing -3
List of Skills
Skill Cost Effect Level
Antichthon 110 MP Severe almighty damage to all foes. Smirk +Debilitate Innate
Concentrate 11 MP Multiplies user's next magical damage by 2.5. Innate
Chakra Walk Auto Recovers MP gradually while moving. Inactive while in stock. 96
Null Mind Auto Immunity against sleep, panic, charm and mute. 97
Drain Light Auto Absorbs light damage. 98

Shin Megami Tensei: Devil SummonerEdit

Demiurge SMTDS
Race Level HP MP St In Ma Ag Lu
Tyrant 70 3500 735 22 19 22 17 14
- 4-6 184 130 168 129 53 66
List of Skills
Megidola Tetrakarn Dekunda
Absolute Zero Petra-Eye Death Ring

Card SummonerEdit

Demiurge Card
Race Level HP MP St En Ma Ag
Tyrant 80 870 320 15 20 20 15
List of Skills
Megidolaon Armageddon Bufudyne


Yaldabaoth as seen in Shin Megami Tensei: NINE
Demiurge as he appears in Shin Megami Tensei Strange Journey
P5 Fake Igor
Yaldabaoth disguised as Igor


  • In Shin Megami Tensei: Devil Summoner and Persona 5, the Demiurge doesn't seem to have any connection to YHVH or his forces.
    • Although not connected to the YHVH who appears in the mainline series, Yaldabaoth represents the role of Law and the idea of YHVH in Persona 5, with the forces of Law like the four Archangels appearing as his heralds.
  • In Persona 5, he is the first main antagonist of the 3D games to show a link to the Law alignment, with his corrupted demon minions taking the form of armored angels and his belief that any degree of chaos must be purged to make a perfect world.

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