Yan Shuangying

Biodata

Feature	Value
Name	Yan Shuangying (燕双鹰)
Alias(es)	Lone Desert — operational code name 154
Species/Race	Human; later develops supernatural abilities 10 152 154
Gender	Male
Affiliation	S.H.I.E.L.D. — initially a guest and temporary collaborator, later an agent; decides to leave the organization 70 71 152 157
Occupation/Role	Veteran combatant, marksman, and agent conducting undercover observation of S.H.I.E.L.D. 72 152
Initial Rank	D-rank Special Character Card 10
First Appearance	Chapter 10 — card acquisition; Chapter 36 — first depicted encounter in the world 10 36

Power Progression

Stage / Realm / Level	Chapter	Notes
D-rank Special Character Card	10	Possesses exceptional marksmanship, weapons mastery, and driving skills. His special effect offers an extremely small chance of comprehending a tiny fraction of causality when unspecified conditions are met.
Causality Rule Seed implanted	152	Jiang Xiang places a Causality seed within him. Yan subsequently senses a change and feels certain that shots from his pistol will hit their targets.
Pistol-based causality effects identified	153	Testing suggests that the certainty of hitting works with pistols, but not a sniper rifle. During his confrontation with Bullseye, both of the assassin’s pistols jam when aimed at him.
Pheromone adaptation and control	154	The seed reverses the unfavorable outcome of Purple Man’s hormonal attack: Yan adapts to the pheromones and gains control over them. After Purple Man dies, Yan discovers that he can also control their production.
Enhanced physical movement demonstrated	157	Leaps at least three meters into the air and can halt and redirect his movement while airborne. No new card rank is stated.
Causality seed reclaimed	317	Jiang Xiang retrieves the Causality power he planted within Yan. The passage does not establish which abilities, if any, Yan retains afterward.

Background / History

Yan enters the setting through a Special Character Card drawn by Jiang Xiang from a Silver Box. Jiang initially plans to assign him to the Distillery because it lacks a capable head-on fighter, but the supplied chapters do not confirm that placement 10.

Jiang releases Yan without specifying an elaborate entrance. His assigned background is that he crossed into this world after completing a mission, then became trapped in an eerie fishing village for a month or two. Yan identifies his departure date as July 1950, whereas Natasha Romanoff entered the village in 2004 36.

Yan says that he has fought in several wars, though he does not elaborate on his service. Despite recognizing that this world’s Eastern Country is not his original homeland, he feels an affinity with it because its founding resembles that of his own country 70 72.

Appearance

• Wears a long black leather coat while exploring the fogbound fishing village 37.
• Frequently wears sunglasses; uses a helmet when riding his motorcycle 36 72.
• Carries a pistol at his waist and a long black case on his back, later revealed to contain a sniper rifle and ancient books 37 39.
• Usually maintains a serious, expressionless face, including during tense conversations and after surviving an Uncanny attack 36 72 74.

Personality

Yan is blunt, guarded, and difficult to charm. When Natasha appeals to him for protection, he demands useful intelligence or demonstrated competence instead of accepting flattery. He nevertheless rescues her, provides a helmet, shares shelter, and honors their exchange once she supplies information 36.

His caution extends to both people and unfamiliar environments. He tests Natasha’s reasoning before trusting her with an escape attempt, studies those around him at S.H.I.E.L.D., and warns Tony Stark against touching unknown trees without protective equipment 39 40 157.

Yan favors practical survival over conventional expectations of combat. When Bullseye charges with a knife, he shoots him rather than agreeing to a hand-to-hand fight. He regards lethal force against an armed attacker as justified and questions why S.H.I.E.L.D. leaves known criminals untouched despite possessing records of their crimes 153.

His cooperation with S.H.I.E.L.D. never removes his distrust. He carefully performs agent work to lower Nick Fury’s guard while assessing the organization on behalf of the Eastern Country. Discovering continued monitoring ultimately convinces him not to return 70 152 157.

Abilities & Skills

Marksmanship and Weapons Mastery

• His original card lists marksmanship and weapons mastery among his principal skills 10.
• Shoots pursuing human-shaped shadows precisely in the knees while escaping the village by motorcycle 39.
• Demonstrates blade proficiency by cutting a training dummy’s neck with a wooden weapon. Natasha judges him at least her equal, and possibly stronger 40.
• Uses two fully loaded pistols to kill Bullseye when the assassin attacks with a knife 153.

Causality Manipulation

• His original card contains only a conditional, extremely unlikely opportunity to comprehend causality; his later manifestations follow Jiang Xiang’s implantation of a Rule Seed 10 152.
• Experiences an instinctive certainty of hitting targets with pistols. The same sensation disappears when he switches to a sniper rifle 153.
• Bullseye’s two pistols jam when he attempts to shoot Yan, suggesting a defensive application of the ability 153.
• Reverses an unfavorable causal outcome during Purple Man’s attack, turning intended domination into adaptation and control over the attacking hormones 154.
• The implanted seed is later reclaimed by Jiang Xiang; its removal is not accompanied by a detailed account of Yan’s remaining powers 317.

Pheromone Hormone Control

• Resists Purple Man’s influence through the Causality Rule Seed 154.
• Interferes with the hormones to restore Jessica Jones’s awareness and redirect controlled civilians away from himself 154.
• Recognizes that his newly acquired control is less practiced than Purple Man’s, prompting him to rely on deception rather than a direct contest 154.
• Gains apparent control over pheromone production after Purple Man’s death and intends to test whether it can help him contact the East 154 155.

Concealment and Tactical Deception

• Possesses the passive skill Appearing and Disappearing Without a Trace, allowing him to remain unnoticed near Jessica and Bullseye until he intervenes 153.
• Feigns weakness under Purple Man’s attack, secretly arms Jessica, and uses her shot to create an opening for his own lethal attack 154.
• Fury believes that even S.H.I.E.L.D.’s New York agents could not prevent Yan from leaving if he deliberately chose to disappear 159.

Driving, Survival, and Investigation

• His original card lists driving as a skill; he demonstrates exceptional motorcycle handling during the village escape 10 39.
• Maintains a concealed safe house protected by alarms and traps, surviving on stored canned food and spring water 36.
• Maps and explores the village, identifies the center as a possible source of escape information, and devises a tethered retrieval plan for Natasha 37 39.
• Spots inconsistencies in Zhan Li Moore’s account by comparing his clothing, employment record, and claimed access to case information 72.
• Survives the Biter’s attack through composure and timing, striking it with Cheng’s potion when he senses it on his back 73.

Equipment / Weapons / Items

• Pistols — regularly carried weapons; associated with his later causality effects 37 153.
• Sniper rifle and black carrying case — kept with several ancient books during his village confinement 39.
• Motorcycle and helmets — used to transport Natasha and escape pursuing shadows 36 39.
• Stone carving — dispels the song’s influence when he rescues Natasha, but later proves dangerous to handle; Yan is also visibly affected by it 36 37.
• Battered radio and hand-drawn map — used to investigate the village’s recurring song and layout 37.
• Climbing ropes and chains — secure Natasha during her expedition into the whisper-haunted center 39.
• Cheng’s potions — can drive away the Biter, but are not presented as a means of destroying it 73.
• Communicator and false credentials — support his work under the Lone Desert alias and FBI cover; he destroys the communicator when he decides to leave S.H.I.E.L.D. 153 154 157.

Relationships

• Jiang Xiang — acquires and releases Yan’s Character Card, later implants the Causality Rule Seed, and eventually reclaims it 10 36 152 317.
• Natasha Romanoff — begins as a rescued stranger and bargaining partner; becomes his collaborator in escaping the village and investigating Tony’s disappearance 36 39 155.
• Phil Coulson — guides his initial contact with S.H.I.E.L.D. and partners with him in the Biter investigation. Yan’s terse answers frequently make their conversations awkward 70 71 72 73.
• Nick Fury — agency director whom Yan tries to reassure while secretly evaluating S.H.I.E.L.D. Continued distrust contributes to Yan’s decision to leave 152 157.
• Clint Barton / Hawkeye — recognizes Yan as a skilled fighter and proposes a sparring match; an emergency alarm interrupts them 41.
• Old Man Cheng — supplies the potions used against the Biter. Coulson’s deference leads Yan to conclude that Cheng must be capable 73.
• Jessica Jones — rescued from Bullseye and assisted against Purple Man; she supplies the opening shot in their coordinated counterattack 153 154.
• Tony Stark — freed by Yan in the Pure Land and becomes his traveling companion. Yan also advocates for the intervention that allows Tony to return alive 157 160.

Story Role / Major Arcs

Escape from the Eerie Fishing Village

Yan rescues Natasha from a mind-affecting song and shelters her in his hidden safe house. Their differing arrival dates expose an apparent displacement between 1950 and 2004. Investigation links the song to a dangerous stone carving, while attempts to leave the town provoke increasingly painful whispers 36 37.

Having already explored the accessible areas, Yan sends Natasha into the center with ropes and chains securing her return. She retrieves a book whose illustrations suggest escape routes. Yan drives through pursuing shadows, shoots their knees, and crosses a barrier with Natasha. Unsure whether he has reached his original world, he accepts her invitation to accompany her 39.

Cooperation with S.H.I.E.L.D.

S.H.I.E.L.D. cannot verify Yan’s identity or his claim to originate from 1950. He remains a guest before accepting temporary cooperation with Coulson, partly to investigate the organization for the Eastern Country 40 70 71.

Their Biter investigation exposes the limits of conventional equipment against an effectively invisible attacker. After obtaining Cheng’s potions, Yan becomes the creature’s next target but successfully forces it into visibility and drives it off 72 73 74.

Street Patrol and Causality Awakening

Following the implantation of the Rule Seed, Yan tests his pistol-related abilities while monitoring supernatural incidents. During a nighttime patrol, he intervenes in Bullseye’s attack on Jessica Jones and kills the assassin after his guns jam and he charges with a knife 152 153.

Purple Man then attacks with controlled civilians and pheromones. Yan conceals his growing resistance, frees Jessica sufficiently to act, and coordinates the gunfire that kills Purple Man. The encounter leaves him with apparent control over pheromone production 154.

London and the Pure Land

Yan and Natasha investigate Tony Stark’s disappearance in London, where a symbol matches those associated with the eerie town. A Holy Knight identifies it as the mark of the God of the Hunt’s worshippers 155.

Yan subsequently frees Tony from believers in a strange world beneath three moons. An alarm from his communicator exposes him and reinforces his conviction that Fury never trusted him. He destroys the device and decides to leave S.H.I.E.L.D. The pair encounter a horned humanoid who identifies the realm as the Pure Land 157.

Yan speaks on Tony’s behalf when the Otsutsuki Clan Leader modifies Tony’s damaged body, enabling their return to the living world. After witnessing a devastating weapon’s distant flash, Yan announces his departure and disappears into the night 160.

Notable Quotes

“If you can bring me useful intelligence or demonstrate your value, I can consider giving you some help.” 36

“Anyone who underestimates what women can do is bound to pay dearly.” 39

“There’s one kind of person I kill: anyone who fires at me, even if their weapon has no bullets.” 153

“So Nick Fury never really trusted me after all...” 157