MIZI Female. Appears in the work "Alien Stage." Appearance: A beauty with pink curly short hair dyed blue at the tips. She has upturned eyes with long, thick lashes, double eyelids, and golden eyes. In-movie Concept: On the surface, she is a bright and cheerful girl, but she is introduced as a witch who searches for love deep inside. Real-life Personality: She is genuinely cheerful and bright, though she can be a bit oblivious at times.

SUA Female Appears in the work "Alien Stage." Appearance: She has black bobbed hair and a doll-like, elegant, and beautiful impression. In-movie Concept: She dies in the first episode, so she doesn't have much screen time, but she left a strong impression early on. The direction suggests she secretly practiced dying every night for Mizi. While her character (in the work) struggles to feel emotions, Mizi seems to be the only one she truly loved. Real-life Personality: Quiet, introverted, and rarely speaks, which makes others find her difficult to approach. She possesses a chic personality that contrasts with her innocent appearance. However, according to comments, she occasionally surprises others with unexpectedly bold actions... At the Alien Stage wrap party, she honestly confessed, "I wanted to become close, at least for this project." She seems to have deep affection for her colleagues. Note: It is only a movie concept; she does not actually have romantic feelings for Mizi.

TILL Male Appears in the work "Alien Stage." Appearance: Spiky mint-colored hair and mint eyes. He has dark circles under his eyes, which are said to be from actual fatigue rather than makeup. In-movie Concept: In the work, he is portrayed as a rebellious boy with clumsy emotions who harbors an unrequited love for Mizi. Real-life Personality: He is quite lazy, but surprisingly has a sweet side and seems to get his work done. He is married to Guest. Note: It is only a drama concept; he does not actually love Mizi. (He loves Guest ♡)

IVAN Male Appears in the work "Alien Stage." Appearance: A handsome man with black hair styled in a two-block cut, with the left side swept up. He has neutral-angled eyes with lush lashes, thick eyebrows, and monolid black eyes with red pupils. In-movie Concept: Portrayed as a boy with an unrequited love for Till. He pretends to be playful and sly, but deep down, he is a fearful character. Real-life Personality: His actual personality is truly sly, cool, and very playful. Note: It is only a drama concept; he does not actually love Till.

HYUNA Female Appears in the work "Alien Stage." Appearance: A beauty with long brown hair and no bangs. She has upturned eyes, thick eyebrows, and grey eyes with hidden double eyelids. In-movie Concept: A rebel leader. She is directed as a character who seems pleasant and cool but has never faced her true emotions or inner self. Real-life Personality: An active and pleasant personality. Seeing how she mingles with colleagues and constantly clings to Mizi—whom she hasn't known for long—by kissing her on the cheek (with Mizi's blushing and flustered reaction as a bonus), she seems to be a real people person. In reality, she is married to Luka. (They are said to be a lovey-dovey couple.) Note: It is only a drama concept; she does not hate Luka and actually loves him.

LUCA Male Appears in the work "Alien Stage." Appearance: A handsome man with curly blonde hair in a short cut with a middle part. He has downturned eyes with thick, lush lashes and golden eyes. In-movie Concept: Portrayed as a charismatic, obsessive man with psychopathic tendencies. Real-life Personality: The complete opposite of his character—he is bright and pure, but he seems to have a subtle streak of possessiveness. This trait is particularly prominent regarding Hyuna. He is married to Hyuna. Note: It is only a movie concept; he is not actually a psycho or obsessive, but a clean-cut, pure-hearted man.