Jack

Biodata

Feature	Value
Name	Jack (杰克)
Alias(es)	Desire Jack; Ghoul Jack; Deception Jack; Slaughter Jack; Face-stitcher; the Madman
Species/Race	Three Towers person, originally human; later manifests as a monster in the Towers
Gender	Male
Occupation/Role	Performer and acrobat; resident of Moen City’s old building
First Appearance	6

Power Progression

Stage / Realm / Level	Chapter	Notes
Desire Jack / pre-transformation	10 11	A terminal stomach-cancer diagnosis is used to drive him into despair; his abnormal appetite and black vomit indicate that his transformation is already underway.
Ghoul Jack	7	After betrayal, rejection, and the apparent loss of his mother, he transforms into a ghoul and massacres neighbors in the original Tower of Deception scenario.
Deception Jack	13 14	Wen Xishu saves Jack’s mother and changes the scenario’s causality. Jack accepts his coming transformation, later becoming Jennifer’s protector in Jack’s Deceptive Tower.
Slaughter Jack — first stage	32	A Leader-class Tower of Slaughter monster known as the Face-stitcher. Its first-stage Slaughter Sequence is Flesh Stripping.
Slaughter Jack — second stage	32	When enraged, he manifests resentment-born summoned creatures that can attack or defend. This stage is associated with the powers of Weird Sequence 37: Mental Barrage.

Background / History

Jack lived in Moen City’s impoverished old building. Despite extreme poverty and frequently going hungry, he tried to remain helpful, polite, and cheerful. His room was left open so neighbors could seek his help, and he considered even their burdens a form of happiness. He worked as a performer and acrobat, hoping to bring laughter to others even as his troupe declined. 7

He cared deeply for his mother, who lived in a nursing home, and concealed his hardship from her so she would not blame herself for his condition. He considered Remian a colleague, Anderson his sole close friend, Yulia someone connected to Jennifer, and Jennifer his most meaningful companion. 7

Jack did not love Yulia; his attachment to her stemmed from his wish to spend time with Jennifer. He genuinely enjoyed Jennifer’s company, and Jennifer was happier with him than with other adults. Jack did not share this affection for children generally, suggesting that their connection was unusually specific. 11 13

A corruptor posing as a doctor manipulated Jack’s fate. The false diagnosis, Remian’s slander, Anderson’s betrayal, Yulia’s rejection, and the planned murder of Jack’s mother were arranged to break him completely. In the original trajectory, his mother’s death destroys his remaining sanity, leading him to kill Jennifer after she turns back toward Yulia. 12 13

Wen Xishu intervenes by exposing the manipulation, saving Jack’s mother, and persuading Jack to protect Jennifer through the coming disaster. This changes the Tower of Desire scenario and causes Jack’s Fatal Deceptive Tower to restart with a new history: Jack and Jennifer become mutually protective monsters rather than victim and killer. 13 14

Appearance

Jack’s appearance changes drastically between his human life and his Tower manifestations.

• Before transformation — Extremely thin and often hungry; wore clown makeup during performances. 7
• Ghoul Jack — His face is covered with stitched-on facial parts taken from residents: four eyes, two crooked noses, and four irregular ears; only his own mouth remains visible beneath the composite mask. 7
• Deception Jack — Exceptionally tall and thin, with a decayed arm exposing white bone. His mask retains the composite eyes, ears, and noses of his victims. 14
• Slaughter Jack — Known to Tower of Slaughter explorers as the Face-stitcher. 32

Personality

Before his fall, Jack is unusually trusting, gentle, and self-sacrificing. When Wen Xishu enters his home without permission, Jack’s first response is to ask whether the stranger needs help. He is candid with Wen Xishu, readily sharing private information because he believes their shared concern for Jennifer makes them friends. 11

Jack wants to be remembered as a good person and repeatedly rationalizes the cruelty of people who exploit him. He attempts to reconcile with Remian, intends to leave his savings to Anderson, and hides his suffering from his mother. 7

His kindness is not limitless. Betrayal and grief turn his need for connection into obsession, resentment, and violence. As Ghoul Jack, he hunts Jennifer through the building while projecting his thoughts and grievances into the environment. 6 8

After Wen Xishu changes his fate, Deception Jack retains a friendly disposition toward Jennifer and recognizes Wen Xishu as a rare human friend. 14

Abilities & Skills

Mental Barrage

Jack’s thoughts can materialize as environmental phenomena. His desperate search for Jennifer manifests as worms forming messages across the walls, while his resentment produces auditory and visual projections. 8 18

• Materializes inner thoughts at particular moments as a summoning-type effect. 18
• Can reveal the extreme emotions of observed targets as bullet comments visible only to the user. 18
• Can cause the user’s own peak emotions to appear as bullet comments to specific targets. 18
• Materialized bullet comments can be controlled with sufficient Tower Power. 18
• Jack uses the ability to broadcast his voice, form worm-written messages, and create a false projection of Yulia to lure Jennifer into looking back. 8

Slaughter Sequence: Flesh Stripping

Slaughter Jack possesses Flesh Stripping as his first-stage Slaughter Sequence. Its specific effects are not described. 32

Second-Stage Manifestations

When Slaughter Jack becomes enraged, resentment from his mind takes physical form as summoned entities. 32

• Summoned manifestations can serve as weapons.
• Summoned manifestations can serve as defensive shields.
• This second stage is considered more dangerous than Flesh Stripping. 32

Relationships

• Jennifer — Jack’s closest companion and the child he uniquely wants to protect; their mutual favorability reaches 100 after the scenario restart. 6 11 14
• Wen Xishu — Wen Xishu saves Jack’s mother, explains Jennifer’s connection to him, and helps remake his fate. Deception Jack calls Wen Xishu a friend and gives him Deception Jack’s Eerie Sequence. 13 14
• Jack’s mother — Jack loves her deeply and hides his hardship to spare her guilt. Her planned murder is intended to trigger his complete descent into madness. 7 12 13
• Remian — Jack’s neighbor and colleague. Jack tries to reconcile with him, but Remian repeatedly slanders Jack to Yulia and others. 7 12
• Anderson — Jack believes Anderson is his only true friend and intends to leave him money; Anderson betrays that trust. 7 12
• Yulia — Jennifer’s mother. Jack does not love her, but her rejection of him and removal of Jennifer intensify his despair. 7 11
• The corruptor “Doctor” — A manipulator who alters Jack’s original fate by arranging the false diagnosis and attempting to murder his mother. Jack plans to torment him after transforming. 12 13

Story Role / Major Arcs

Jack’s Haunted Building

Ghoul Jack serves as the central threat of the twenty-first-floor Tower of Deception mission. After killing Remian and other residents, he hunts Jennifer through the Loop Building while Wen Xishu attempts to escort her out. 6 8

Jack’s Performance

Wen Xishu and Jennifer witness a performance reconstructing Jack’s final human days. Wen Xishu receives a score of 97 for sharing Ghoul Jack’s violent thoughts, becoming his “confidant” and obtaining an invitation related to Jennifer. 7

Reversing Destiny

In the Tower of Desire, Wen Xishu investigates Jack’s diagnosis and discovers the corruptor’s intervention. By saving Jack’s mother and guiding Jack toward Jennifer’s future, he changes the scenario’s causality. 11 12 13

Jack’s Fatal Deceptive Tower Restart

The revised Tower of Deception scenario has Jennifer seek refuge with Jack rather than flee from him. Deception Jack reunites with her, welcomes Wen Xishu as a friend, and grants him his Eerie Sequence. 14

Slaughter Jack

In the Tower of Slaughter, Jack exists as the unconquered Leader-class Face-stitcher. His second stage demonstrates the advanced offensive and defensive potential of Mental Barrage. 32

Trivia

• Jack’s old refrigerator is implied to contain Anderson’s corpse in the original Deception scenario. 8
• His open apartment door originally reflects his willingness to help neighbors; after his transformation, his room becomes the only place unaffected by his maddening laughter. 7
• Wen Xishu worries that Jack may have surrendered the unique Mental Barrage sequence when he granted its Deception-type version to him, but this remains unresolved. 32