Originally a mundane black snake possessing no cosmic pedigree, Xu Hei's trajectory altered upon digesting the soul of the reincarnated immortal Chen Fan and assimilating the Demon God Cauldron into his physical vessel. Highly pragmatic, cold, calculating, and instinctively cautious, Xu Hei rejects theatrical heroism in favor of ruthless efficiency, tactical misdirection, and defensive preparation. Despite his predatory mindset, he maintains an ironclad protective instinct toward his demonic kin, prioritizing the collective survival of serpentkind over immortal politics. Powers: Wields the Demon God Cauldron as an internal demon core for supreme alchemy, refining, and spiritual purification. Master of the Nine Transformations of the True Dragon, unlocking the draconic Reverse Scale and innate aquatic/aerial dominance. Possesses earth and fire elemental spells, the Fish-Dragon Myriad Transformations disguise art, the Soul Devouring Banner, and utilizes the Tenth Layer of Spirit Awareness alongside early-stage Foundation Establishment prowess.

Known throughout antiquity as the Heavenly Demon Wanderer, Black Yellow is an ancient, immortal-era demon soul currently bound to the body of a mangy black dog. Cynical, scheming, materialistic, and deeply knowledgeable, he acts as Xu Hei's strategic advisor, alchemical tutor, and array master. While seemingly cowardly and self-serving, Black Yellow shares a genuine symbiotic bond with Xu Hei, trading ancient secrets and ancient battle formations for spiritual nourishment and high-grade pills. Powers: Master of ancient Heavenly Demon formations, Tier-3 and Tier-4 barrier arrays, soul-binding runes, stealth talismans, and relic appraisal. Lacks sustained martial firepower due to his diminished vessel, but compensates with lethal tactical planning and trap arrays.

A stoic, stubborn disciple of the Mountain Moving Sect renowned for his anti-Qin military campaigns. After being captured by Xu Hei, fitted with a spiritual taming ring, and forcibly conditioned through demonic techniques, Xiao Chou was transformed into Xu Hei’s external human operative. Despite his identity crisis and enslavement, Xiao Chou maintains an unbroken core of martial integrity. When his sect collapses and his master dies, his sheer refusal to submit to the Chu Alliance activates dormant leylines, completing his evolution from captive pawn to indomitable powerhouse. Powers: Cultivator of the Heavenly Devil Technique combined with the Mountain Moving Sect’s earth-shattering body-tempering arts. Wields the monstrously destructive Qilin Arm, possesses immense physical damage resistance, and has latent resonance with the continent’s Dragon Veins.

An ancient elephant demon patriarch who serves as the martial backbone of the Myriad Serpent Valley alliance. Honorable, patient, and unyielding, Man Jin forged an unbreakable bond with Xu Hei after the young serpent aided him in enduring his mortal Four-Nine Heavenly Tribulation. Now elevated to the Golden Core realm, Man Jin serves as Xu Hei’s primary deterrence against human sect elders and expansionist factions. Powers: Golden Core stage demon powerhouse. Exercises colossal brute strength, earth-splitting seismic stomps, thick dermis natural armor impenetrable to ordinary spiritual swords, and towering war forms capable of pulverizing sect fortifications.

A cold, merciless grandmaster of the Snake Catching Sect driven by an obsessive fixation on transcending his cultivation bottlenecks. Viewing demonic beasts strictly as alchemical reagents and spiritual cattle, Xuan Yangzi spearheads systemic pogroms against serpent nests. His repeated failures to exterminate Xu Hei transform his clinical superiority into a manic, bloody feud. Powers: High-tier Foundation Establishment / pseudo-Core stage cultivation. Commands specialized serpent-subduing nets, blood-draining needles, snake-dispersing powders, soul-sealing talismans, and large-scale blood sacrifice ritual matrices.

The seductive, calculating proprietress of the Heavenly Dragon Casino in Chuyang City. Operating as an urban broker and underworld kingpin, Liu Ruyan uses gambling dens, illicit artifact auctions, and loan traps to enslave independent cultivators. Ruthless beneath her elegant veneer, her pride is thoroughly shattered when Xu Hei’s infiltrator persona exposes her rigged establishment and razes it to the ground. Powers: Advanced Foundation Establishment stage. Master of illusory charm techniques, mental intrusion arts, concealed poison darts, defensive barrier talismans, and commercial surveillance arrays.

A brutal, sadistic frontline general of the Chu Alliance. Favoring absolute violence over diplomatic finesse, Zhang Tie spearheaded the physical breach of the Mountain Moving Sect’s mountain gate. He relishes the subjugation of proud martial artists, using torture to break Xiao Chou’s spirit, completely oblivious that his cruelty would trigger ancient leyline safeguards. Powers: Peak martial body cultivator of the Chu Alliance. Employs heavy bludgeoning arts, shockwave gauntlets, and aggressive Qi dispersion strikes designed to shatter defensive stances and bone structures.

Xiao Chou’s master and an elder of the Mountain Moving Sect. A man of profound personal honor, Shi Yazi understood the grim fate awaiting his sect during the Chu Alliance’s siege. In a final act of paternal sacrifice, he publicly renounced and disowned Xiao Chou before succumbing to his wounds in enemy captivity, deliberately severing his disciple's liability to allow Xiao Chou a path to survival. Powers: Late Foundation Establishment elder versed in earth-element defense, stone-shield formations, and weapon-forging techniques.

The supreme authority and grand protector of the Mountain Moving Sect. Burdened with defending centuries of sect heritage, Shi Fengzi made his final stand as the nexus of the sect's grand defensive formation, falling in battle only when the Chu Alliance shattered the sect’s core spiritual protections. Powers: Core-level spiritual authority synchronized with a Tier-3 array spirit, capable of manifesting titanic stone phantoms and mountain-scale defensive barriers.

An observant opportunist navigating the apocalyptic crossfire between the Chu Alliance and the remnants of the Mountain Moving Sect. Possessing keen survival instincts, he capitalizes on the atmospheric dispersion of ancient spiritual Qi during the Dragon Vein eruption to achieve a rapid, transformative cultivation breakthrough. Powers: Successfully achieved 60% saturation of the early Foundation Establishment stage through ambient spiritual absorption; agile movement techniques and defensive Qi veils.

An ancient reincarnated immortal whose soul sought to seize Xu Hei's mundane serpentine body for an effortless rebirth. His arrogance proved his undoing; the nascent Demon God Cauldron inside Xu Hei obliterated Chen Fan’s remnant consciousness, granting the simple beast human intellect, ancient lore, and cultivation insight. Powers: Ancient immortal soul comprehension, forbidden possession techniques, and high-order memory archives.

A depraved rogue cultivator who created the deceptive "Fake Peach Blossom Realm," an isolated pocket dimension used to trap, milk, and slaughter travelling cultivators for forbidden blood refinement. Subdued and stripped of his treasures when Xu Hei exposed his domain. Powers: Pocket-illusion barrier arts, corrosive Qi needles, and ownership of an ancient artifact refining furnace subsequently claimed by Xu Hei.

A ferocious sovereign of the northern wilderness who commands the lightning-aspected beast hordes. Bound by mutual interest with Xu Hei and Man Jin, he joined the coalition to crush the Snake Catching Sect's regional branches in retaliation for the continuous poaching of their territories. Powers: Greater Demon peak stage. Commands high-frequency purple lightning discharges, soundwave lion roars that shatter mortal dantian meridians, and devastating high-speed claw charges.

A hollowed human cultivator vessel animated and operated directly by Xu Hei via the Fish-Dragon Myriad Transformations. Used to freely walk within human cities, enter auction houses, gamble in the Heavenly Dragon Casino, and trigger mass-destruction relics without endangering Xu Hei's serpentine true body. Powers: Mimics standard Qi Refining and early Foundation Establishment aura; channels Xu Hei's sensory perception, spatial rings, and detonator talismans.