Welt

Biodata

Feature	Value
Name	Welt Yang
Alias(es)	Uncle Yang; Yang Chaoyue
Gender	Male
Affiliation	Star Rail Express
Occupation/Role	Leader of the Star Rail Express; creator of the Titan mechs
Status	Active
First Appearance	Chapter 8

Power Progression

Chapter(s)	Advancement	Details
212-213	Herrscher-core enhancement	Receives an energy mass from Yan Huan's summoned Herrscher and successfully tests the resulting ability to create and retract black holes while transformed as “Yang Chaoyue” 212 213.
224-225	Gravity-domain demonstration	Establishes an oppressive gravity field and invisible energy barrier that halt Yan Qing's attacks before they can reach him and restrict movement around him 224 225.
262	MHT-3 Peacebringer deployment	As the Titan mechs' original creator, summons the large MHT-3 Peacebringer to confront a Doomsday Beast 262.
311	High-level defensive feat	Blocks the blow of a mountain-sized golden giant with his staff while protecting the Express crew 311.
1954	Advanced mech model acquired	Receives an unreleased, early-serial Magic Mech Armor model from Pearl, an advanced piece of robotics craftsmanship that greatly interests him 1954.

Background / History

Welt recognizes Yan Huan's swordsmanship as resembling that of Fu Hua, a friend from his homeland. Yan Huan's claim to have commanded the Hyperion confirms to Welt that he is someone from that world; Welt is visibly shaken by the reunion and later expresses happiness that Yan Huan has become a companion again in another universe 8 21.

When Fu Hua appears on Jarilo-VI, Welt warmly greets her as “Alliance Leader.” Her presence is especially meaningful to him because she is someone he personally knew, unlike the local versions of Seele and Bronya 112.

Welt is later identified as the original creator of the Titan mechs. Although another Welt is present during the Xianzhou crisis, he rejects the distinction between “original” and “replica” as far as those who know the other Welt are concerned 262.

His past is described as including work in animation and leadership of a terrorist organization that once stirred conflict across an entire world 869.

Welt views Trailblaze as a commitment to living people rather than merely unexplored destinations. He explains that the name “Welt” signifies “world” in his homeland and that the connections he forms with others are the most valuable reward of his journey 1129.

Personality

Welt is generally analytical, cautious, and protective of the Express crew. He assesses threats before acting, advises others to retreat from dangers beyond their ability, and prioritizes sealing Stellarons over his own safety 262 692 721.

He can also be deeply affected by memories of his homeland and past actions. After being shown footage of his conduct on the Luofu, he isolates himself in distress; later, stress and repeated stimulation contribute to illness and detachment 227 243.

During the Luofu incident, the effects of Yan Huan's “Wangzai Awesome Candy” make him unusually aggressive, arrogant, and impulsive. He intimidates Tingyun, severely injures Cloud Knights, and threatens Yukong before Yan Huan stops him 214 219.

Despite his caution, Welt remains open to people who sincerely wish to learn from the Nameless. He supports Sunday’s request to travel aboard the Express after their time in Penacony, while leaving the final decision to the crew and Himeko 1130.

Welt has a strong technical interest in robotics and mechanical design. He is visibly enthusiastic when Pearl gives him an advanced Magic Mech Armor model, appreciating both its rare serial number and detailed construction 1954.

Abilities & Skills

Gravity Manipulation

Welt can create powerful gravity fields and black holes, using condensed energy barriers to control a battlefield.

• Transforms into “Yang Chaoyue” and creates or retracts black holes 213.
• Stops Yan Qing's punch with an invisible barrier 224.
• Maintains a gravity domain that makes approaching him difficult and restricts Yan Qing's movement 224 225.
• Pins Cloud Knights to the ground and prevents reinforcements from approaching 224.
• Uses overwhelming force against the Dream Master's Automaton body, crushing it with one hand 742.

Mech Creation and Command

Welt is the creator of the Titan mechs and can deploy them in combat.

• Identifies himself as the creator of the mechs and warns allies away from a Doomsday Beast threat 262.
• Summons the large mech MHT-3 Peacebringer to confront a Doomsday Beast 262.
• A separate Welt deploys numerous Titan mechs through distorted space during the pursuit of Kafka 236.
• Receives a highly detailed, unreleased Magic Mech Armor model from Pearl and displays particular appreciation for its advanced design 1954.

Combat and Defense

Welt is capable of directly confronting major threats and defending companions.

• Blocks a mountain-sized golden giant's strike with his staff 311.
• Clears monsters alongside Otto while advancing toward a Doomsday Beast 262.
• Intervenes against Huanlong's approach to Jianmu and stresses the need to prevent a catastrophe 553.
• Instinctively moves to shield Himeko when hostile-looking Memory Spirits appear during the Onfaros crisis 1766.

Investigation and Strategy

Welt frequently acts as the crew's investigator and tactical planner.

• Chooses to personally investigate the Luofu after its automated response signals suggest a crisis 212.
• Leads the investigation of Penacony's Dreamscape and recognizes the suspicious emptiness of Morning Dew Mansion 670 692.
• Determines that Sandstone may have been using the Express as part of a larger plan 702.
• Raises concerns that Onfaros may contain a sealed Great-Eradicator and that its awakening would cause widespread suffering 1498 1499.
• Helps Himeko assess the Strategic Investment Department's pressure on the Express at Two-Phase Paradise and articulates the risks of worlds being absorbed into the IPC's Preservation-centered system 1934 1951.

Equipment / Weapons / Items

• Cane/staff — used as a combat weapon and to block powerful attacks 8 311.
• Herrscher core — receives an energy mass from Yan Huan's summoned Herrscher, which enters his body 212.
• MHT-3 Peacebringer — large mech summoned against a Doomsday Beast 262.
• Magic Mech Armor model — a rare, unreleased early-serial model from the Pearlstar Consortium presented to him by Pearl 1954.

Relationships

• Yan Huan — Fellow Express member and person connected to Welt's homeland. Welt recognizes Yan Huan's swordsmanship and past identity; their relationship includes guidance, disagreement, and mutual concern 8 21 100 228.
• March 7th — Express crewmate who calls him “Uncle Yang.” She repeatedly intervenes when his candy-induced aggression threatens others and worries over his health 215 219 227 243.
• Himeko — Fellow Express leader and trusted collaborator. They discuss Yan Huan's actions, Penacony's dangers, the crew's strategic position, and the implications of returning to Himeko's homeland, Two-Phase Paradise 98 702 1931 1934 1951.
• Fu Hua — An old friend from Welt's homeland whose swordsmanship he compares to Yan Huan's 8 112.
• Dan Heng — Fellow Express member whom Welt consults and protects during crises 243 262.
• Acheron — An ally Welt judges to be non-hostile to the Express; he investigates Penacony with her 670 702.
• Sunday — Works with Welt to investigate Onfaros and move Herta's equipment; both share concern for the missing Nameless. Welt supports Sunday’s wish to travel with the Express and help him learn from the Nameless 1130 1495 1498.
• Herta — Ally assisting Welt's investigation into Onfaros through the Herta Magic Mirrors 1495.
• Black Swan — A Memokeeper and ally who investigates the aftermath of Onfaros alongside Welt, Himeko, and Sunday 1766.
• Pearl — Chief Executive Officer of Two-Phase Paradise who negotiates with Welt and Himeko over the Anti-Destruction Alliance. She recognizes Welt's interest in mecha and presents him with an advanced Magic Mech Armor model 1951 1954.
• Otto — Provokes and taunts Welt during the Doomsday Beast incident 262.
• Yukong — Luofu official whom Welt threatens during a severe misunderstanding before Yan Huan de-escalates the confrontation 218 219.

Story Role / Major Arcs

Herta Space Station

Welt witnesses Yan Huan's defeat of the Doomsday Beast and recognizes both the precision of Yan Huan's swordsmanship and his connection to the Hyperion 8. He supports Yan Huan's place among the Express crew and reflects positively on Yan Huan's changed circumstances 21.

Jarilo-VI

Welt advises Yan Huan to act with more caution while pursuing the planet's Stellaron 100. He also reunites with Fu Hua, someone from his homeland 112.

Xianzhou Luofu

Welt personally investigates the Luofu's abnormal signals and acquires a Herrscher core from Yan Huan 212. Under the influence of Yan Huan's candy, he becomes confrontational and violent toward Cloud Knights and Yukong, culminating in a duel with Yan Qing where he dominates the battlefield with gravity 213 225. After reviewing recordings of these actions, he becomes ashamed and withdrawn, then returns to a more cautious approach to the Stellaron Hunter investigation 227 228.

Penacony

Welt takes an investigative role in the Dreamscape, works alongside Acheron, and questions both the Family's security and Sandstone's motives 670 692 702. He opposes the Dream Master's idea of “perfect harmony” and participates in the conflict surrounding Penacony's hidden power structures 741 742.

Following the crisis, Welt discusses the meaning of Trailblaze with Sunday and supports the former Oak Family Head’s effort to learn from the Nameless by traveling aboard the Express 1129 1130.

Onfaros Investigation

After Yan Huan and Dan Heng become unreachable, Welt assists Sunday and Herta at Herta Space Station. He helps install Herta's Magic Mirrors and worries that Onfaros may hold a sealed Great-Eradicator whose release would create a major threat 1495 1498 1499.

After the final Re-Creation in Amphoreus, Welt reunites with Himeko, Sunday, and Black Swan in Okhma. He remains skeptical of the Memory Spirits’ claims and protects Himeko when the group is confronted, before learning that March has staged the encounter as a prank 1766.

Two-Phase Paradise

Welt accompanies Himeko to her homeland, Two-Phase Paradise, after Jade's warning that the IPC is taking renewed interest in the world 1931 1932. When Pearl seeks to draw the Express into the Anti-Destruction Alliance, Welt initially emphasizes the danger that IPC influence may subsume local civilizations into Preservation. He and Himeko ultimately reveal that the Express has come to cooperate with the alliance rather than refuse it 1934 1951.

Pearl later gives Welt an unreleased Magic Mech Armor model, which he accepts with notable enthusiasm. He subsequently approaches March, Yan Huan, and Scott after hearing a disturbance at Artworld Academy 1954 1955.

Trivia

• Welt's cane falls from his hand when he first hears Yan Huan may be the captain of the Hyperion 8.
• A child on the Luofu calls him the “demon Yang Chao Yue,” contributing to his stress-induced illness 243.
• Welt once complains that he has no personal pursuits because work leaves him too busy to remember them 570.
• Yan Huan ties Welt to himself with a chain during a flight to prevent him from falling while Welt suffers severe stomach problems 859.
• Pearl's gift to Welt is an early-serial, unreleased Magic Mech Armor model, selected specifically because of his interest in giant robots and mechanical design 1954.