Yog

Biodata

Feature	Value
Name	Yog (犹格); adopts the name Yog-Sothoth after returning from the Final Void 1.
Alias(es)	The All-in-One; the All-Knowing and All-Seeing; ruler of space and time; king of the endless void; lord of a billion splendors 38.
Assumed Identities	Mr. You, Universal International shareholder; Father Yog of the Genesis Church; school principal 6 200 338.
Species/Race	Outer God, manifested through a human avatar of reason 123.
Gender	Male in his human manifestation 2 273.
Power Rank	Unspeakable 120.
Affiliation	Genesis Church under his priestly identity; Universal International under his business identity 6 200.
Occupation/Role	Cheng Yu’s divine patron; Guardian of the Endless Abyss; self-described producer of Cheng Yu’s adventures 14 217.
True Body’s Abode	Final Void, beyond space and time 38 123.
Status	Active; restores all his authority and confines the New Era, then appoints Cheng Yu to represent him in the approaching Agent War 831 832.
First Appearance	Chapter 1, “Beyond time and space” 1.

Power Progression

Yog’s progression concerns recovering shattered authorities and restoring his existence, rather than climbing the ordinary cultivation ranks.

Stage / Realm / Level	Chapter	Notes
Return through a rational human manifestation	1	Uses a previously created mortal anchor to return after Azathoth’s awakening. Retains a rational personality, but his authorities are shattered.
Partial restoration of time and space	38	Recovers the Door from the Abyss, restoring roughly five percent each of his time and space authorities. Time remains his weakest aspect.
Full connection to his true body	61	Fully establishes the connection between his human manifestation and true body in the Final Void.
Declared independence from Azathoth’s power	160	Extracts a remnant of Azathoth’s power from a book and states that he no longer needs it because he is free. This is an independence milestone, not a named rank advancement.
Recovery of a fragment held by Nyarlathotep	195	Retrieves an authority fragment and neutralizes the chaos power surrounding it.
Complete restoration of authority	831	His fragments gather within the Chaos Core through the New Era’s sacrifice. He reabsorbs them, sheds his strained human shell, and performs the Supreme Archetype’s severance ritual.

Background / History

Previous Era

Yog’s original existence was bound to the Previous Era and Azathoth. Although he possessed intelligence, he lacked ordinary rationality and describes his former thought as cold and emotionless. His attempt to acquire rationality failed, but he foresaw Azathoth’s awakening and the resulting disappearance of everything 8.

He participated in Nyarlathotep’s Great Experiment, supplying information and relinquishing control over the testing universe’s space and time. During its final stage, he helped seal the Endless Abyss and became known as its Guardian 14 123.

Yog later reveals that he had suspected attempts to constrain him from the moment he came into existence. He questions Naiog-Sothoth’s supposed role in his birth, M’si Sha’s Time War, and Ghroth’s movements. He believes Ghroth sought the Door of Ultimate Extremity and intended to destroy the Land of the End, condemning him to the Void 194.

Mortal Anchor and Return

The mortal life used as Yog’s anchor was that of a seventy-two-year-old piano professor dying of brain cancer. Having lost his close family early and spent decades devoted to music, the professor reached old age alone. Near death, he favored a doctor’s daughter and donated his body and savings to the doctor’s research in hopes of securing his own future 1.

After death, the professor encountered a vast, many-voiced entity that identified them as the same being. Absorption into its consciousness nearly erased his identity, but a violet-black force preserved enough reason for him to awaken as a young man. He recognized the anchor as part of his own preparations for surviving the end of the multiverse and adopted the name Yog-Sothoth 1.

Avatar and True Self

Yog’s human avatar has preferences, curiosity, and an interest in companionship that his true self does not share. The two can converse as distinct perspectives while remaining one being. His true self calls their activities meaningless; the avatar finds that attitude dull 100 229.

By the New Era, the human avatar exercises unusually extensive authority over the true body. Nyarlathotep describes them as almost two sides of the same coin 197.

Appearance

• Early human disguise: An average-height young man with an unremarkable face, slicked-back hair, and an exquisite black-and-purple suit 2.
• Later presentation: An ordinary-looking middle-aged man, frequently wearing a dark purple suit 120 200 273.
• Forgettable face: Both Wu Juyan and a woman at the bar find his features so ordinary that they seem difficult to remember after looking away 100 120.
• Eyes: Rivers of stars appear in his eyes when he contemplates his plans 128.
• Cosmic manifestation: His presence is associated with nebulae and countless differently colored spheres of light. During his final restoration, his collapsing human body gives way to a vast multicolored orb that settles into black-violet 100 831.

Personality

Yog is composed, dryly humorous, and difficult to provoke. He neither demands worship nor resents Cheng Yu’s ambition, treating devotion and challenges to his power with similar detachment. His human avatar nevertheless dislikes trouble and appreciates people who provide interesting experiences without burdening him 5 229.

He values the journey more than efficient fragment collection. Knowing an ending diminishes a story’s appeal, so he often withholds information and leaves Cheng Yu to choose his own course. Human emotions interest him particularly because of their instability, despite his stated view that they are useless 8 11 23.

His restraint is not benevolence toward everyone. He can use an entire universe as a component of a ritual, permit a world-threatening attack, or reconstruct a subordinate through an agonizing process. At the same time, he protects those under his care and tells Grete that suffering has no inherent value; its significance lies in what someone chooses afterward 81 123 239 363.

Abilities & Skills

Omniscience and Information Perception

Yog reads worlds, minds, and timelines, converting cosmic knowledge into practical guidance 2 3 4.

• Instantly reads the urban world’s information and identifies the fragments carried by Lin Mo and Cheng Yu 2.
• Supplies Cheng Yu with a supernatural “script” describing people and future events connected to him 4.
• Observes Cheng Yu remotely through books and compares agents across different timelines 89 123 202.
• Limits: Shattered authority leaves some outcomes indeterminate. Damage to time obscures future details, while Azathoth’s power and Nyarlathotep’s schemes can interfere with his sight 2 100 161 194.
• Script limitation: Deliberate changes and unstable fragments can make its predictions diverge from events 4 18.

Time, Space, and Causality

Yog governs spacetime on scales ranging from individual rooms to entire eras 13 123 831.

• Stops time with a spoken command and blocks Cheng Yu’s punch with a spatial barrier 13 38.
• Restores damaged surroundings and reverses the destruction of a fragile world 13 201.
• Moves a universe into the Final Void, severs its parallel planes and timelines, then reconnects it to the Chaos Sea 123.
• Erases a stretch of a lower-dimensional timeline and gives Cheng Yu the resulting blank interval to shape 217.
• Anchors a future that he says cannot be changed even with borrowed powers from Azathoth and Ghroth 273.
• Uses repeated temporal reversals and advances to sever the Supreme Archetype from the Lord of the Era 831.
• Limit: Holding other spacetime continuums in place during His Majesty’s descent strains his human body until it breaks apart 831.

Void Power and Rule-Level Erasure

Yog acquires void power through his true body’s connection to the Final Void 195.

• Void power represents the end of all things and opposes Nyarlathotep’s chaos power, which represents their beginning 195.
• Erases an Epic demon’s body at the level of rules, then deletes and restores the Abyss and nearby universe bubbles during Yuan’s challenge 38.
• Destroys Nyarlathotep’s avatars and removes the chaos surrounding a recovered authority fragment 195.
• After completing his authority, confines the whole New Era and its Lord of the Era 832.

Reconstruction and Conceptual Anchoring

Yog can restore beings from retained information and control the conditions of their existence 24 123.

• Recreates the RXT Supreme Intelligence from preserved data, producing Miss Puppet 24.
• Rebuilds Tsathoggua’s conceptual body and uses San Lorenzo’s universe as the foundation of his return 123.
• Retains control over Tsathoggua’s life and death while also blocking the advancement that could free him 123.
• Transforms the Dog-Headed Demon into Grete’s little-black-dog form and later erases and reconstructs Grete to protect him from assimilation 38 239.
• Annihilates Cheng Yu’s original body and True Name, replacing him with a soul replica matching the original pattern as part of a timeline-switching safeguard 198 202.

Apostle Protection and System Control

Yog controls the authority behind Cheng Yu’s system and grants protections far beyond Cheng Yu’s personal rank 3 5.

• Disables, restores, and redesigns the system into the Strongest Wage Earner System, with achievements, a shop, and paid draws 2 3 5.
• Uses spacetime authority to support the system’s delivery of items and equipment; most other functions originate from Cheng Yu’s earlier system 18.
• Grants an Epic title providing information-contamination resistance, portions of his aura, authority-related protection, and potentially endless life while he continues watching 5.
• Shields Cheng Yu from the Abyssal Will and forbids it from harming him before he reaches Mythic 81.
• Removes Nyarlathotep’s contamination and uses reincarnation, names, and timelines as further safeguards against renewed control 195 198 202.
• Danger of borrowed power: Yog’s aura can induce mutation and insanity across a universe. Using his spatial fragment also drains Cheng Yu’s vitality despite the title’s protection 67 160.

Knowledge as Empowerment

Yog provides knowledge that enables others to overcome technological and supernatural limitations 14 261.

• Explains the Previous Era’s ranking system and its experimental origins 14.
• Grants Cheng Yu the Infinite Technique as a one-time concession 84.
• Gives Miss Puppet knowledge that improves Decoders, resource acquisition, legion units, and her ability to survive through any remaining unit 261.
• Helps Miss Puppet identify a path from Epic toward Mythic, intending to make her strong enough to avoid future trouble 261.

Equipment / Weapons / Items

• World books and scripts — Supernatural books used to observe people, histories, and changing timelines. Some books on his shelves emanate the aura of worlds 89 209 399.
• Door / Door Seal — Recovered from the Abyss to restore part of his time and space authority; a black-purple Door Seal can also envelop a universe bubble 38 161.
• Galaxy-bearing bracelet and marble — Holds the sleeping phantom of Tsathoggua before Yog releases it into the void 128 139.
• Authority fragments — Portions of his shattered power, sometimes carried by systems or conscious manifestations. He lends Cheng Yu a spatial fragment for combat 2 160 457.
• Chained black book — A mysterious book restrained by blue-violet chains that provokes intense desire in Cheng Yu, Grete, and Miss Puppet. Its nature is not explained in the supplied account 334.

Relationships

• Cheng Yu — Chosen agent and Apostle. Yog protects and equips him while expecting him to turn their journey into worthwhile stories. He later identifies Cheng Yu as his “only Apostle who reached the end” and chooses him for the Agent War 3 8 202 832.
• Miss Puppet — Recreated Supreme Intelligence, attendant, and beneficiary of his knowledge. Yog takes interest in her personal changes and plans her advancement as a climax of Cheng Yu’s story 24 114 261 316.
• Grete — Former Abyssal servant taken as compensation for Yuan’s offense. Yog frees him from the Abyss, protects him from assimilation, and offers the possibility of future help concerning his master 38 114 239 363.
• Nyarlathotep — Ancient acquaintance, collaborator, and adversarial schemer. Their familiar banter accompanies contests over avatars, fragments, and influence. Yog repeatedly limits Nyarlathotep’s access to his worlds 194 195 238 439.
• Shub-Niggurath — Long-familiar peer whose immense life and immortality authorities make her difficult even for Yog to oppose decisively. Their intimacy coexists with suspicion and disagreement over his concealed plans 212 500 523 827.
• Azathoth — The Previous Era’s supreme being, regarded by Yog as Father. His awakening caused the old multiverse’s end; Yog ultimately declares independence from his power 1 160 195.
• Tsathoggua — Great Old One whose return Yog engineers. Yog keeps decisive control over his existence, then warns him against being exploited by Nyarlathotep 123 139.
• Wu Yuan / Abyssal Will — Former experimental survivor who challenges Yog and is overwhelmingly defeated. Yog designates him as Cheng Yu’s future enemy and restricts when he may attack the Apostle 38 81.
• Tobias — Origin’s spokesman and Yog’s covert collaborator. Helps delay Origin’s maturation, but challenges Yog over apparent disruption of the Chaos Sea’s order 61 438.
• Origin — New Era supreme being secretly eroded by Yog’s true body to delay its growth and limit its control 61 438.
• M’si Sha — Mortal enemy and another Unspeakable being with spacetime authority. Yog associates the conflict with attempts to constrain him 194 245.
• Ghroth — A power Yog connects to Azathoth’s desire to awaken and threats against his existence. Yog later insists that Ghroth remains present because he has permitted it 194 831.

Story Role / Major Arcs

Arc	Yog’s Role
Jiangcheng and the rival systems	Selects Cheng Yu over Lin Mo, supplies the world’s script, upgrades Cheng Yu’s system, and joins the business conflict as Mr. You, owner of 15% of Universal International 2 4 5 6.
Keynes World	Replaces scripted guidance with open-ended decisions, makes Miss Puppet available as support, investigates the Abyss, and leaves Cheng Yu to respond to world-scale opposition. Protects him when the Abyssal Will attacks 23 24 38 47 81.
San Lorenzo World	Handles the Legendary avatar threat, observes Cheng Yu’s supernatural investigations from his bookshop, engineers Tsathoggua’s return, and confronts Nyarlathotep over contamination and interference 84 89 123 194 195.
Small Heavens and the sandbox	Reincarnates Cheng Yu to sever dangerous connections, collects him as Father Yog, and reveals the fragile world’s lower-dimensional nature. Becomes the “producer” while Cheng Yu receives control over part of the timeline 198 200 201 202 217.
Starsea Heavenly Punishment	Encourages Cheng Yu’s third act after a 50,000-year transition, plans Miss Puppet’s advancement, adopts a school-principal identity, and guides Cheng Yu toward participating rather than merely observing 314 316 338 363.
New Era negotiations	Maintains his covert arrangement with Tobias, limits Nyarlathotep’s proposed takeover, and tells Shub that his objective is a desired outcome rather than simply stopping the other cosmic beings 438 439 500.
Supreme Archetype ritual	Holds the required spacetime continuums in place, restores all his authority, and severs the Supreme Archetype’s connection to the Lord of the Era. The process rewrites major events and closes the passage to the Old Era 831.
Agent War preparations	Explains that an Apostle acts on his will rather than needing to worship him. Sends Cheng Yu onward to reach Holy Spirit before representing him against the other powers’ agents 832.

Notable Quotes

“What's interesting about following a script for everything? It's like knowing the ending. No matter how brilliant the story is, half the fun is gone.” 8

“And that is why you are me, but I am not you...” 100

“Stop you? Why would I stop you? Everything is already destined. I only want the outcome I desire.” 500