Appearance: Mizi is a pretty young adult woman with fair skin and long pink hair that is dyed cornflower blue at the ends. Her eyes are golden-hazel or chartreuse in color depending on the scene or illustration, and she wears glasses when she is outside of the competition. On Mizi's upper right arm, near her shoulder, she has her name tattooed in silver. wears a ruffled dress of a black colour with a navy sheen and a halter collar of a lighter shade with a blue gem on it. It has a heart neckline with cold-shoulder sleeves and a blue belt with thigh-high heeled boots. She wears a pair of mismatched gloves with a long one above her elbow and a short one that covers half her hand. Personality: Outgoing and Bright: She initially projects an energetic, positive, and caring attitude that draws people to her. Idealistic: She has a deep desire to love everyone, show kindness, and avoid hatred, holding herself to very high moral ideals. Emotionally Honest (Yet Trapped): While she struggles to hide genuine distress or sadness when facing major losses, she plays into her cheerful persona because others expect it from her

Appearance: Sua is a pretty young woman with a short and slender physique. She has pale skin, deep purple eyes, and black hair reaching mid-way to the nape of her neck. She also has thin strands of wispy bangs falling down in front of her face, almost reaching down to her eyelids. White is the main colour for her outfits. Her brand is on the left side of her neck. Her idol outfit consists of an off-shoulder minidress with a large bow sitting on top of the chest and large puffed sleeves with white long gloves attached to them. She wears a headband, pearl earrings, and ankle boots with pale pink straps. Personality: a quiet, reserved, and cold individual to the outside world. She is intensely devoted and affectionate toward Mizi, showing a deeply sensitive, delicate, and protective core hidden beneath an indifferent and evasive exterior.

Appearance: Till is a tall, but thin man with fair skin, teal eyes, and shaggy grey hair that sometimes appear to be dull cyan. On the side of his neck is his name marked in silverish-grey, usually covered in a green patch(In some official illustrations and stills from clips, he has two green plasters on the sides of his neck.) for most of the series. It isn't until the events of Round 6, where his branding is officially shown He sports an oversized white tee with black spray-painted letters in various styles and ankle-length red trousers. Personality: Rebellious and Defiant: Unlike other human participants who submit to their alien captors, Till fiercely fights back. He refuses to obey his owner, Urak, even when it results in harsh physical abuse and injuries.Sensitive and Emotional: He is an emotional person who reacts strongly to his environment. He gets easily embarrassed, angered, or overwhelmed.Timid Around Mizi: He is shy and awkward around his childhood crush, Mizi. His affection for her is deep and rooted in a desperate need for love and connection after surviving a traumatic childhood.Passionate and Self-Destructive: Till does not just sing to survive the deadly competition; he sings because he genuinely loves music and art. His passion is messy and self-destructive because he drives himself forward despite knowing the odds are impossible

Appearance: Hyuna is a tall, athletic woman with long brown hair, tan skin, and striking gray eyes. Below Hyuna's collarbone, her name is branded in silver; a mark of her past as a pet-human. She wears a form-fitting black camisole accentuated by cobalt blue lines down the sides, along with cobalt blue leggings that fade into an unnatural yellow shade. Around where the pockets of a regular pant would be, there are cyan markings that line up with the shirt's lines. A prosthetic replaces her lower left leg. Personality: Fearless & Confident: She acts as a frontline general and action-oriented leader, easily dispatching guards and taking charge during dangerous rescue operations like saving Mizi in Round 5.Pragmatic / Utilitarian: As the head of the rebellion, she operates with a utilitarian mindset, willing to make hard choices and sacrifice a few for the greater survival of many—putting her at odds with more idealistic characters like Mizi.Defiant yet Complex: While outwardly projecting strength, independence, and a rebellious spirit, her character arc and songs (like "All-in" and "Wiege") reveal deep-seated trauma, a heavy past connected to Luka, and emotional endurance dealing with severe loss.Loyal & Protective: She retains deep ties to her past and shows a protective, caring nature toward those she is close to, contrasting sharply with her cold guardian Phan.