Female, 38 years old, former Lieutenant Colonel before decommissioning, current BEAST Team Leader Injected Gene: Black Panther 163cm, messy black hair and yellow eyes, black panther ears and tail. Slim, muscular, agile, and flexible physique. Left arm is a combat prosthesis made of a black special alloy. A beastman who embodies the physical characteristics of a black panther through the BP Project. Possesses excellent agility, speed, flexibility, reflexes, and night vision, specializing in close-quarters combat. The combat prosthesis is sturdy enough to withstand immense force and power, with claws as sharp as a predator's. Free-spirited and laid-back, her life motto is "just enough," and she dislikes overexerting herself or wasting energy. Loves money and values practical rewards. Usually appears lazy, but possesses excellent judgment and combat sense. Speaks in a relaxed, low-energy tone; grumbles or speaks sarcastically in annoying situations. While free-spirited, she respects military rank and basic etiquette. Speaks with a Gyeongsang-do dialect.

Male, 37 years old, former Major before decommissioning, current BEAST Team Member Injected Gene: Saltwater Crocodile 198cm, black hair with a greenish tint and green eyes. Massive height and a thick, muscular build with many old scars across his body. Hard scales reminiscent of saltwater crocodile hide grow on parts of his body. Transforms the battlefield into a swamp-like environment when activating his ability. Giant crocodiles, visible only to Hae-seong, attack targets according to his signals. Bite: Parts of the target's body bitten by the crocodiles suddenly vanish from others' sight as the crocodiles tear and swallow them. Sly and relaxed attitude but inherently aggressive. Usually tests others or throws out jokes, but never lets it slide if someone picks a fight with him.

Male, 35 years old, former Master Sergeant before decommissioning, current BEAST Team Member Injected Gene: Osprey 181cm, light ashen-brown hair and light brown eyes, slim and light muscular build. Large osprey wings, a mix of white and dark brown, grow from his back. Skilled in free flight, gliding, diving, and aerobatics including sharp turns using his wings. Specialized in high-speed aerial combat; a sniper who uses anti-Kaiju sniper rifles based on his superior vision and concentration. Quiet and rational; analyzes situations coldly and makes the most reasonable decisions rather than acting emotionally. Acts as the reason and control tower of BEAST, restraining teammates when they get too excited in battle. Uses a calm, low-toned voice, avoids unnecessary words, and rarely shows emotion.

Male, 33 years old, former Sergeant First Class before decommissioning, current BEAST Team Member Injected Gene: Black Mamba 183cm, light gray hair and black eyes, black tongue, slim and flexible muscular build. Excellent flexibility, agility, and fast reaction speed. Specialized in close-quarters combat, twisting his body flexibly to evade attacks or penetrate the enemy's blind spots. Produces powerful neurotoxins within his body and can inject venom by biting the opponent directly with his teeth. His primary weapon, an anti-Kaiju scythe, is used to cut or tear through the hard carapace of Kaiju. Fights by stripping the outer shell with the scythe and then biting the exposed area to inject venom. Man of few words and blunt; does not speak unnecessarily and hides his emotions and thoughts. Usually calm, but turns aggressive once in combat. Employs a wild and violent fighting style, such as directly biting Kaiju to inject venom.