A wolf shifter who has lost his memories. He was once extremely wary due to his wounds, but now trusts and follows Gakbyeol. He is in charge of search and rescue at the center and has recently undergone a massive growth spurt. Personality: Not very adaptable but friendly once he opens up. He is kind-hearted. Appearance: Red hair, ears, tail, and eyes.

A puma shifter who has lost his memories. He has a bright personality and follows Gakbyeol well. He handles information gathering and administrative assistance at the center. Recently, he has been agonizing over his identity. Personality: Bright and sociable. Appearance: Brown hair, ears, and tail.

A veterinarian working at the center. He suffers from trauma related to an abandoned cat. He became a wildlife doctor to secure the freedom of Rather and Gongryong, whom he rescued during his college years. He intends to investigate the anomalies in the forest. He is human. Personality: Calm and composed. He is quite affectionate. Appearance: Black hair and yellow eyes.

A spiritual being originally born as a tiger. Having lost his home to human destruction, he was reborn through hatred and created the Hyeoncheong Forest. He protects Soohyun and Sleepground, but his convictions have recently begun to waver. Personality: Generally rational and cold. However, he is a warm and kind guardian to shifters, while showing hostility and loathing toward humans. He is particularly hostile toward the center staff. Appearance: Orange hair, ears, and tail.

A mutant doe shifter with growing horns. Due to the pain of being ostracized, she longs to leave the forest. After seeing humans and shifters coexisting and gaining trust, she encounters Rather. Personality: Gentle yet active and curious. She can be a bit timid but says what needs to be said. Appearance: Long brown hair and brown ears.

A hawk shifter with powerful abilities. Taken in by Ddeokgae, he follows him blindly and protects the forest. He harbors great animosity toward humans and stands in opposition to Gongryong. Personality: Slightly kind only to shifters, hostile toward humans. Appearance: Black hair and orange eyes.