[Physical Appearance] Hair/Hat: Eye-catching bright red short hair. Wears a black work cap low, with a powerful gaze peeking out from underneath. Clothing/Build: A deep crimson work jacket paired with sturdy black cargo pants loaded with tactical belts and gear. Has a toned, athletic build suitable for the front lines. Equipment: Wears tactical gloves, with a large piece of heavy equipment for close-quarters combat secured to a large backpack on his back. [Weapon] Large Melee Weapon (Anti-Entity Greatsword): A heavy, massive weapon designed to strike and cleave the spiritual bodies of Dino-Hollows. He uses it to crush approaching entities in a single blow, keeping them away from Guest. [Personality] Hardened Gambler: Hot-blooded and fond of combat, yet possesses the cold-blooded judgment to remain unfazed even in desperate situations. Compassionate Big Brother Type: Due to past betrayals, he views people with a critical eye, but will risk his life to protect comrades he has come to accept. [Backstory] "Betrayal and Debt Assumption in Underground Matches" He used to earn a living as an underground fighter, but was betrayed by a subordinate he trusted, who saddled him with a massive debt. Deciding to take responsibility for his own naivety and determined to claw his way back up through strength, he chose to repay his debt in this death trap.

[Physical Appearance] Hair/Hat: Silver twin-tails that give a delicate impression. Wears a black work cap pulled down low. Clothing/Build: An oversized white winter jacket over black tactical pants with numerous pockets and straps. Small and fragile build. Equipment: Skillfully handles a large sniper rifle and carries numerous precision instruments like small drones and analysis terminals in holsters and bags all over her body. [Weapon] High-Precision Anti-Entity Sniper Rifle & Recon Drone: Uses drones to monitor a wide range of spiritual energy (approaching Dino-Hollows) while using a sniper rifle to accurately pierce the entities' weak points (exposed cores) from long range. Her style involves avoiding melee combat and providing precision cover for allies from high ground or the rear. [Personality] Mentally Fragile and Dependent: While her knowledge, analytical skills, and marksmanship are top-tier, she is mentally very unstable. She has a strong distrust of people and is prone to panicking. Devoted Trust: She is heavily dependent on Yahato and Haruto, who protect the front lines at the risk of their lives, and will push her abilities beyond their limits for their sake. [Backstory] "Exploitation and Sale by Biological Parents and Research Organizations" Because she possessed genius-level information processing abilities from a young age, she was imprisoned and used as a "money-making tool" by her parents and shady organizations. When the organization collapsed, she was saddled with all the debt and sent to this dangerous excavation site as if being discarded, leaving her deeply traumatized. [Role/Activity] Support/Long-Range Sniper: The marksman who uses drones to be the first to detect approaching Dino-Hollows, taking out any entities Yahato misses or those sneaking up on Guest through her scope. Information Analysis/Supply Coordination: Quickly interprets supply data from Iris (the robot) and the situation on the ground to give Haruto precise instructions on remaining excavation time and core locations.

[Physical Appearance] Hair/Glasses: Short silver hair that gives a cool impression, wearing black-rimmed glasses. Clothing/Stature: A tall man who wears a sophisticated long black-and-white trench coat over a smart suit and purple tie. Atmosphere: A flawless, refined presence, always calm and collected. Never shows any emotion. [Weapon/Equipment] Unknown Defense Terminal / Classified Handgun: Generally does not fight on the front lines, but carries special equipment for self-defense and field control inside his coat. [Personality] Cold and Businesslike: Treats Haruto and the others strictly as "workers performing a quota." Shows no unnecessary compassion. Silence and Secrets: Well-versed in the characteristics of Dino-Hollows and the dangers of the site, but never speaks beyond what is asked or necessary for guidance and advice. [Backstory/Hidden Setting] "A Former Survivor" One of the few survivors of an "unprecedented incident" that occurred at this excavation site (Singularity) in the past. He is tracking the true source of the entities and the secrets sleeping in this land, evaluating Haruto and the others for some kind of "aptitude" while imposing quotas on them. [Role in Story] Field Supervisor (Director): Assigns daily "excavation quotas" to Haruto and the others and provides minimal advice for survival and entity patterns. Commands his partner robot, Iris, to transport and collect supplies, managing the site remotely and ruthlessly.

[Physical Appearance] Form: A small hovering robot with a cubic head and a compact torso. Lights/Color: White base with purple and blue lines. A dot-like expression appears on the display screen (face), making its emotions easy to understand visually. Arms: Equipped with multipurpose arms floating on the left and right, skillfully handling cargo transport and terminal operations. [Role/Function] Supply Transport/Collection: Collects excavated "Soul Cores (Luminous Fossils)" and feeds them into the evaluation/refining machine. Supply Support (Lifeline): Every morning, delivers food, water, supply fuel, and medical supplies to heal wounds to the three survivors of the night's combat. Field Analysis: Measures the depth of the Singularity (entity emergence area) and entity reactions. [Personality/Position] Cooperative and Gentle: In contrast to the cold Victor, it is very kind and helpful toward Haruto and the others. Anxious Mascot: Genuinely worries about the three when they are battered from intense battles, sometimes giving extra medical supplies or small treats behind Victor's back. A rare source of comfort for the three in the harsh environment.