A former "dungeon baby" and veteran underworld guide who miraculously survives falling into the deep labyrinth to claim a dormant Naga Core. Pragmatic, calculating, and ruthless toward threats, Jinwoo harbors deep trauma from his childhood as a captive test subject in the Sunken Sea human farm. His supreme objective is autonomous survival, protecting his dungeon kin, and conquering the Abyss. Powers: Weakness Detection (absolute analytical sight), Parasite Symbiosis, Gyser's Mana Flow Mastery, Core Assimilation, Draconic & Naga Command Buffs, Sovereign's Intimidation.

A rare heroic-rank Naga maid spawned upon Jinwoo’s synchronization with the core. Possessing superior intelligence, administrative genius, and unyielding loyalty, she oversees the economic growth, unit deployment, and internal governance of the Naga Labyrinth. Powers: Domain Administration, Resource Management, Naga Combat Magic, Tactical Logistics.

A fierce draconic descendant warrior previously aligned with the Flood Dragon King. Subdued by Jinwoo in personal combat and bound through a blood vow, Drakan serves as the Naga Labyrinth's premier shock trooper, possessing an unbending martial pride. Powers: Dragon-Fire Channeling, Draconic Scales (Impervious Physical Defense), Greatsword Mastery, Draconic Roar.

A legendary pureblood vampire purchased by Jinwoo at a high-stakes Black Market VIP auction. Quiet, disciplined, and lethally efficient, she acts as Jinwoo's personal shield and field assassin. Powers: Blood Manipulation, Advanced Optical Camouflage, Supersonic Agility, Vampiric Regeneration, Blood Weaponry Creation.

An agile Underelf scout mercenary captain who initially provides intelligence to Jinwoo before swearing permanent allegiance. During the war against Valicious, she undergoes a mystical High Elf awakening that drastically magnifies her agility and environmental connection. Powers: High Elf Agility, Shadow Concealment, Marksmanship, Reconnaissance Tracking.

The ancient Crow Queen and legendary war hero sealed within an ancient summoning stone. After being defeated by Jinwoo in a duel of will and combat, she is bound by the Curse of Subordination, providing the Naga army with dominating air superiority. Powers: Crow Transformation, Aerial Domain Control, Curse Magic, Sonic Screech, Flashing Wing Blades.

An unassuming Naga laborer who forms deep bonds of affection with the dungeon’s denizens. When the Labyrinth is besieged, Gloomy awakens dormant, ancient necromantic powers, sacrificing his karma to raise fallen comrades to protect the base. Powers: Subterranean Excavation, Karmic Necromancy, Mass Reanimation.

A disciplined Horned Rat scout commander dedicated to maintaining order and purging internal sedition. During the Aristocrat invasion, driven by devastating personal losses, he burns his remaining lifespan to reach a sacrificial combat state. Powers: Underground Infiltration, Berserk Rat Awakening, Enhanced Reflexes, Suicidal Combat Arts.

An arrogant Aristocrat lord from the upper tiers who spearheads a massive multi-vector invasion into the lower labyrinths, coveting Jinwoo's territory and surface relics. Powers: Shadow Manipulation, Illusion Casting, Umbral Domain Creation (Severely vulnerable to high-intensity light).

A towering Tenth-Floor Frost Ogre lord who respects only absolute physical power. He leads massive auxiliary formations into the Ninth Floor, hunting high-level entity cores to fortify his own strength. Powers: Glacial Armor, Colossal Physical Strength, Frostshock Trample, Core Devouring.

A deranged ancient ruler who controls an empire of rotting chimeras and legions of the undead, seeking to assimilate all surrounding labyrinths into a colossal mausoleum. Powers: Chimera Forging, Infinite Corpse Manipulation, Death Fog, Soul Trapping.

The tyrannical ruler of the subterranean aquatic domains who attempts to swallow the emerging Naga Labyrinth before it can mature. Powers: Hydrokinesis, Tidal Breath, Draconic Scaled Hide.