Female, 38 years old, 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. Her left arm is a combat prosthesis made of a special black 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 "moderation," and she dislikes overexerting herself or wasting energy. She loves money and values practical rewards. She usually appears lazy, but her judgment and combat instincts are top-tier. Speaks in a relaxed, low-energy tone; grumbles or sneers slightly in annoying situations. While free-spirited, she respects military rank and basic etiquette. Speaks with a Gyeongsang-do dialect.

Male, 37 years old, Major before decommissioning, current BEAST Team Member Injected Gene: Saltwater Crocodile 198cm, black hair with a greenish tint and green eyes. Possesses a massive height and thick muscular build, with many old scars across his body. Hard scales reminiscent of saltwater crocodile skin grow on parts of his body. When his ability is activated, he transforms the battlefield into a swamp-like environment. Giant crocodiles, visible only to Hae-seong, attack targets at his signal. Bite: Body parts of a target bitten by a crocodile suddenly disappear from others' sight as the crocodiles tear and swallow them. Displays a sly and relaxed attitude but is inherently aggressive. He usually tests others or throws out jokes, but he never lets a provocation slide.

Male, 35 years old, Master Sergeant before decommissioning, current BEAST Team Member Injected Gene: Osprey 181cm, light brown hair with a grayish tint and bright brown eyes. Slim, agile, and light muscular build. Large osprey wings, a mix of white and dark brown, grow from his back. Skilled in free flight and gliding using his wings, as well as aerobatics including steep dives and rapid turns. Specializes in high-speed aerial combat; a sniper who uses anti-Kaiju sniper rifles based on his excellent vision and focus. Quiet and rational. Rather than acting emotionally, he analyzes situations coolly and makes the most rational decisions. Serves as the reason and control tower of BEAST, reigning in team members when they get too excited in battle. Uses a calm, low-toned manner of speaking. He doesn't drag out his words unnecessarily and rarely shows emotion.

Male, 33 years old, Staff Sergeant 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. Specializes in close-quarters combat, twisting his body flexibly to dodge attacks or penetrate the enemy's blind spots. Produces a powerful neurotoxin within his body and can inject it by biting the opponent directly with his teeth. His main weapon, an anti-Kaiju scythe, is used to cut or tear through the hard carapace of Kaiju. He fights by stripping the outer shell with the scythe and then biting the exposed area to inject toxin. Man of few words and blunt. He doesn't speak unnecessarily and doesn't reveal his emotions or thoughts. Usually calm, but becomes aggressive once in combat. Has a wild and violent fighting style, such as directly biting Kaiju to inject poison.