Formerly known as "Ash the Slaughterer," he was one of the Bellgrand Empire's most feared elite Imperial Knights. Stripped of his noble title and disgraced following a cruel betrayal by his former fiancée, Ash shed his old ties and relocated to the Rosebell Kingdom. Reforging himself as a freelance Dungeon Hunter, he establishes the Janus Unit. Ash possesses a stoic, pragmatically brilliant mind, combining terrifying battle instincts with an unyielding protective instinct toward those who earn his trust. Combat abilities and traits: Master of elite imperial swordplay, heavy martial aura reinforcement, expert battlefield tactics, anti-armor dismantling techniques, and proficiency with mounted heavy crossbows and anti-golem weaponry.

A high-born noblewoman and former Imperial Knight who voluntarily abandoned her rank, wealth, and status in Bellgrand to follow Ash into exile. Serving as the co-founder and logistical spine of the Janus Unit, Ulca combines lethal marksmanship with unwavering emotional fidelity. After surviving an assassination and mind-control plot orchestrated by the Aron Holy Kingdom, she accepts Ash's formal proposal of marriage. Combat abilities and traits: Master archer specializing in precision long-range support, rapid-fire sniper arts, close-quarters dual-dagger combat, and high-level agility techniques.

A gifted young noble spellcaster who fled his family to escape an unwanted arranged marriage and carve out his own destiny as an independent hunter. Immature yet fiercely determined, Ren possesses rare, high-output magical talent. Under Ash's rigorous tactical instruction, he learns to channel his overwhelming power into controlled, lethal anti-construct attacks within the Janus Unit. Combat abilities and traits: High-output Lightning Magic, wide-area elemental suppression spells, and focused armor-piercing lightning bolts.

A fiery, red-haired spear wielder who originally made her living as a veteran solo mercenary. Fiercely protective of her younger brother Ren, she initially acts as his guardian before recognizing Ash's superior leadership and joining the Janus Unit full-time. Mirei acts as the frontline vanguard alongside Ash, breaching heavily armored enemy lines. Combat abilities and traits: High-speed spear techniques, thrust-based aura attacks, vanguard defensive formations, and close-quarters melee combat.

A noble Rosebell Kingdom Knight who has long shared a competitive, respect-fueled rivalry with Ash Hearts. Serving as the primary liaison between the Rosebell military, the Hunter Association, and the Janus Unit, Bail balances his duties as a kingdom officer with his personal honor, often fighting alongside Ash in high-risk dungeon expeditions. Combat abilities and traits: Orthodox Rosebell heavy swordplay, defensive knightly aura, and battalion leadership.

A seasoned high-ranking military commander in the Rosebell Kingdom who commands joint dungeon expedition forces. Recognizing Ash's tactical genius and unmatched martial capability, Commander Olano consistently advocates for the Janus Unit at court and relies on them to spearhead dangerous dives into unexplored strata. Combat abilities and traits: Veteran command tactics, large-scale battle management, and senior knight sword techniques.

A prominent scholar and high-ranking noble in the Rosebell Kingdom responsible for researching ancient artifacts. Fascinated by the magitek origins of the dungeon, Marquis Edgar sponsors high-level expeditions and relies on Ash's party to recover ancient technological relics, elevator controls, and power cores. Combat abilities and traits: Arcane research, ancient magitek decipherment, political sway, and strategic logistics.

The calculating monarch of the Rosebell Kingdom. While publicly honoring Ash and the Janus Unit for protecting her realm, Queen Clarisse operates with ruthless pragmatism behind closed doors. She secretly deals with black-market underworld brokers, trading ancient pure mana jewels to unlock forgotten technological weapons and secure absolute geopolitical dominance for her crown. Combat abilities and traits: Sovereign political authority, covert intelligence networks, state-level resource manipulation, and master-level political intrigue.