Black Dragon

Biodata

Feature	Details
Name	Black Dragon (黑龙)
Alias(es)	Dark Demon Dragon — its god-level evolved form 2
Species/Race	Sentient externalized martial soul
Affiliation	Lin Xiao, its master and wielder
Occupation/Role	Lin Xiao's martial soul, aerial mount, and combat partner
Status	Active 57
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Top-tier Black Dragon martial soul	1	An externalized martial soul with Innate Full Soul Power, its own consciousness, and the ability to refine soul power independently; its manifested body is about 100 meters long. 1
God-level Dark Demon Dragon	2	Evolves through the guardian-system reward. Its body expands to 150 meters, its scales transform, and it develops a fifth claw. 2 5
Shared Super Douluo enhancement	11	Lin Xiao's rise from level 95 to level 96 is immediately felt by the dragon, which becomes markedly stronger and releases an excited roar. 11
Dark Demon Dragon Grass refinement	45, 49	Consumes and fully refines the Super Immortal Grade Dark Demon Dragon Grass, receiving a substantial overall enhancement while raising Lin Xiao from level 96 to 97. 45 49

Background / History

The Black Dragon awakened as Lin Xiao's externalized martial soul. Unlike ordinary martial souls, it possesses an independent consciousness and can cultivate by refining soul power alongside Lin Xiao, giving him two simultaneous sources of cultivation. Although conscious, it recognizes Lin Xiao's commands as absolute. 1

After Lin Xiao accepted the mission to guard Qian Renxue, the system evolved the Black Dragon into the god-level Dark Demon Dragon. The evolution enlarged its manifested form from roughly 100 to 150 meters and gave it a fifth claw. 2 6

Appearance

The Black Dragon is a colossal, slender black dragon whose scale makes mountains, city structures, and ordinary soul beasts appear small by comparison. It can also compress itself from its full 150-meter form into a palm-sized dragon that commonly rests on Lin Xiao's head. 2 6

• Dark scales that became more profound and refined after its evolution. 5
• Bright, gem-like Dragon Eyes compared to stars or lanterns. 1 9
• A five-clawed form following its evolution into the Dark Demon Dragon. 2
• Can reduce its size to avoid attention while travelling over populated areas. 2 12
• Its full manifested body exceeds 100 meters and reaches approximately 150 meters after evolution. 2 6

Personality

Around Lin Xiao, the Black Dragon behaves like an innocent and childish companion. It can become sulky, frightened, delighted, or aggrieved, and frequently seeks reassurance from him. It is also notably fond of sleeping, particularly when reduced to its palm-sized form. 1 4

Its demeanor changes sharply around threats. When it senses danger or faces enemies, it becomes vigilant and intimidating, responding with draconic pressure and violent roars. 4 9 It was historically afraid of Qian Renxue because she repeatedly teased it when she was younger, though she continues to pick it up and play with it after their reunion. 7 24 49

Abilities & Skills

Autonomous Cultivation and Shared Growth

The Black Dragon can independently refine soul power, allowing its cultivation to proceed in tandem with Lin Xiao's. It senses and shares in increases to Lin Xiao's strength. 1 11

• Its autonomous refinement was a major factor in Lin Xiao's exceptional cultivation pace. 1
• Lin Xiao's rise to level 96 and later level 97 also strengthens the dragon. 11 49
• It fully refined the Dark Demon Dragon Grass after consuming it. 45 49

Size Manipulation and Flight

The Black Dragon can change from a palm-sized form to a 150-meter aerial body, allowing it to function as both a concealed companion and a high-speed mount. 2 6

• Carries Lin Xiao and his companions between Martial Soul Hall, Heaven Dou City, and Sunset Forest. 6 32 50
• Can fly at high speed for extended distances. 7 11
• Shrinks to avoid frightening civilians or attracting the notice of soul masters. 12
• Sustained high-intensity flight can tire it, requiring rest. 12

Draconic Roar and Pressure

Its roar generates overwhelming pressure that can incapacitate weaker opponents and terrify surrounding beasts. 9 11 28

• Stuns and renders several Soul Ancestors unconscious while rescuing Zhu Zhuqing. 9
• Causes wild beasts to flee and tremble under bloodline pressure. 11
• Knocks out ordinary soldiers and weaker Royal Knights during the Heaven Dou City confrontation. 28
• Its presence alone causes fear among powerful soul masters, including Dugu Bo. 39

Perception and Communication

The Black Dragon is highly responsive to danger and maintains an emotional, thought-based connection with Lin Xiao. 4 7

• Detects threats before Lin Xiao identifies them, leading him to Zhu Zhuqing's ambush. 7
• Senses the lingering aura of dragon kin within the Ice and Fire Yin Yang Well. 50
• Communicates through emotions, body language, and roars rather than speech. 4 6
• Despite its evolution and immense size, it still cannot speak. 6

Independent Soul-Skill Use

As an externalized martial soul, the Black Dragon can use soul skills independently in addition to Lin Xiao using them himself. Lin Xiao states that fighting alongside it would be comparable to deploying two Super Douluo. 38

Relationships

• Lin Xiao — Master and wielder. The Black Dragon obeys his commands absolutely, shares an emotional link with him, and grows stronger alongside his soul power. 1 4 11
• Qian Renxue — Lin Xiao's sister and a familiar figure from the dragon's early life. The Black Dragon once feared her teasing, but she continues to treat its smaller form playfully. 7 24 49

Story Role / Major Arcs

• Martial Soul Hall emergence — Appears above the Worship Hall as Lin Xiao leaves seclusion and reveals the unusual nature of his sentient external martial soul. 1
• Martial soul evolution — Evolves into the five-clawed, god-level Dark Demon Dragon after Lin Xiao chooses to protect Qian Renxue. 2
• Journey to Heaven Dou — Serves as Lin Xiao's mount across the border and detects the danger surrounding Zhu Zhuqing. 7
• Rescue of Zhu Zhuqing — Descends upon the pursuing Star Luo soul masters, scattering and incapacitating them with its roar. 9
• Heaven Dou City confrontation — Appears over the Crown Prince's Mansion, breaks the Royal Knights' formation, and helps establish Lin Xiao's public identity as the Black Dragon Duke. 27 28 51
• Sunset Forest expedition — Transports Lin Xiao and Qian Renxue in their search for the Ice and Fire Yin Yang Well, then senses the dead dragon skeletons beneath the spring. 32 34 50
• Dark Demon Dragon Grass absorption — Consumes the super immortal herb and completes its refinement, strengthening both itself and Lin Xiao. 45 49