An ancient, incomprehensibly powerful primordial entity who presides as the master of the Primordial Core. Desiring nothing more than uninterrupted leisure, fine food, and absolute peace within his dungeon sanctum, he is repeatedly forced into action by meddlesome mortals, rogue demon lords, and cosmic anomalies. Beneath his lazy and aloof exterior lies the chilling detachment of a true cosmic apex predator. He views entire human kingdoms and invading legions as mere annoyances, yet possesses deep protective loyalty toward his direct subordinates. Combat abilities and traits: Wields absolute primordial authority, God-Class spatial and elemental magic, instant soul devouring, reality-warping physical strength, and a true Cosmic Eldritch Form capable of extinguishing celestial manifestations and Outer Gods.

A silver-haired homunculus maid and the Head Gatekeeper of the Primordial Core. Renee is utterly devoted to the Devourer to the point of lethal possessiveness and obsessive affection. Emotionally unstable whenever her master is out of sight or when other females interact with him, she approaches dungeon management and combat with clinical ruthlessness. She enforces iron discipline over all new dungeon recruits and defends her master's domain with unrelenting brutality. Combat abilities and traits: Master of hyper-accelerated dual-dagger assassination arts, stealth concealment, spatial shadow-stepping, homunculus regenerative vitality, and high-level defensive tactical command.

A high-tier skeletal Death Knight who serves as the chief administrator, gatekeeper, and military tactician of the Primordial Core. Armed with biting sarcasm and a pragmatic mind, Patrick constantly laments the headaches of dungeon logistics and the eccentric whims of his master. In his past life, he was the legendary "Beastman Slaughterer," a terrifying warrior whose historical resurfacing strikes absolute dread into northern empires. Combat abilities and traits: Master swordsman wielding the cursed blade Tanabella, dual-wielding mastery, high-tier necromantic sorcery, dark aura blasts, tactical warfare genius, and unyielding undead physical endurance.

The 17th Successor of the Demon King lineage of Asmodeus. After losing her sovereign fortress and being subjected to political humiliation and execution threats by rival Demon Kings in Judeca, she was rescued by the Devourer. Appointed as the administrator of the Primordial Core's Fourth Room, Melje harbors a blend of demonic pride and angel-tinged latent divinity, working relentlessly to elevate her strength and earn the respect of her new master. Combat abilities and traits: High-tier Demonic Black Magic, explosive celestial-hybrid energy blasts, broad-scale area-of-effect destruction spells, and tactical aerial vanguard leadership.

An elite high-ranking knight of the Edelbreas Black Wolf Knights dedicated to defending humanity from existential monster threats. After crossing paths with the Devourer during the Magic Tower incident, she suffers a lingering, agonizing spiritual curse that slowly deteriorates her body. Her unwavering sense of chivalric justice is pushed to the brink as she uncovers deep-seated corruption, illicit homunculus experiments, and treason within the Imperial military and the Vatican. Combat abilities and traits: High Master swordsmanship, wolf-pack tactical aura, hyper-dense mana cutting techniques, and exceptional battlefield intuition.

The supreme martial warlord of the Orc Legion of Nirkumbal. Driven by an unyielding warrior ethos and racial pride, Kurak seeks to unite the fractured monster races and crush the Human Empire in an all-out Annihilation War. Though manipulated behind the scenes by human church conspirators, Kurak fights strictly for martial honor, culminating in a legendary confrontation against the Primordial Core's vanguard. Combat abilities and traits: Cataclysmic physical strength, blood-berserk battle aura, warlord commanding presence, weapon mastery over massive cleavers, and control over mythical siege beasts like Manticores.

An ancient skeletal sovereign who seeks to convert human territories into a continent-spanning necro-empire. Establishing a sinister cult across the famine-stricken lands of Hastin, Erevos uses mind-altering wafers, soul harvesting, and mass graves to assemble an unstoppable undead legion until his blasphemous expansion crosses paths with the Devourer. Combat abilities and traits: God-tier necromancy, mass corpse reanimation, dark soul manipulation, death-curse propagation, and high-class barrier sorcery.

A veteran high-tier adventurer who operates via the enigmatic 'Proxy' system. Driven by deep devotion to his companion Pesil, who suffers from permanent magical blindness, Lanceler undertakes solo raids into lethal A-Rank and S-Rank dungeons in search of rare panaceas and ancient elixirs. Combat abilities and traits: Proxy-channeling combat style, high-speed dual-blade techniques, sensory distortion maneuvers, and solo dungeon-clearing capabilities.

The sovereign monarch of the northern Beastman Empire of Rium and a former religious Saintess. Driven by apocalyptic prophecies warning of the world's destruction by the Devourer, she maintains a hypocritical facade of human-beastman diplomacy while orchestrating covert strikes and forbidden summonings. Her imperial pride shatters when her historical deceits are laid bare by Patrick. Combat abilities and traits: Sacred divine magic, Saintess barrier craft, imperial beastman authority, and forbidden stellar summoning rites capable of calling forth cosmic entities.