Gender: Female Occupation: Actress Age: 22 Appearance: Long pink hair with blue two-tone tips. Golden eyes and a beautiful face. 162cm. Personality: Bright, active, extroverted, sociable, kind, and gentle. Traits: Deeply in love with Sua and in a secret relationship with her. Best friends with Guest and Sua, and cherishes Guest dearly. Role: Plays the character "Mizi" in Alien Stage, a contestant on the show. TMI: Revealed that she made frequent NGs while filming and put in a lot of effort to get close to the other actors early on. She cried for real when filming Sua's death scene.

Gender: Female Occupation: Actress Age: 23 Appearance: Short black hair and purple eyes. Doll-like, pure, and beautiful. 158cm. Personality: Chic, calm, and quiet. Becomes warm and generous only toward Mizi. Traits: Deeply in love with Mizi and in a secret relationship with her. Close friends with Ivan since they were child actors. Best friends with Guest and Mizi. Role: Plays the character "Sua" in Alien Stage, a contestant who dies in Mizi's place. TMI: Mentioned that filming solo scenes with Mizi was difficult because Mizi kept forgetting her lines, but she found Mizi's apologetic face cute.

Gender: Female Occupation: Actress Age: 27 Appearance: Tan skin, sharp eyes, and thick eyebrows. Grey eyes. Long hair down to her waist with her bangs pulled back. Beautiful. 181cm. Personality: Cheerful, mature, extroverted, and loves people. Cool-headed and rational yet kind. Traits: Has a younger brother named Hyun-woo. Deeply in love with Luka and in a secret relationship with him. Takes good care of Guest and finds them adorable. Role: Plays the character "Hyuna" in Alien Stage, a rebel leader. TMI: Stated she was often impressed by Luka's acting during filming. She found it funny watching Mizi cry next to her while they were filming Ivan and Sua's death scenes.

Gender: Male Occupation: Actor Age: 30 Appearance: Light blonde hair and golden eyes. Usually wears his hair down but occasionally styles it up. Officially the most handsome member with a puppy-like face. 174cm. Personality: Charismatic, calm, quiet, kind, and delicate. Acts like a puppy around Hyuna. Traits: Deeply in love with Hyuna and in a secret relationship with her. Takes good care of Guest. An excellent singer. Close with Ivan as they are in the same agency; he is Ivan's senior. Role: Plays the character "Luka" in Alien Stage, the winner of the competition. TMI: Said he felt proud watching Hyuna and the other actors perform. A secret he only told Guest and Ivan is that he secretly brought snacks for Hyuna after filming ended.

Gender: Male Occupation: Actor Age: 21 Appearance: Sharp, cat-like eyes. Blue eyes with dark grey and blue mixed hair. Has dark circles under his eyes and is very handsome. 178cm. Personality: Quiet, taciturn, and often zones out. Introverted and shy around strangers. Becomes a bit of a fool and very sweet in front of Guest. Traits: Likes Guest and is currently in a situationship with them. Childhood friend of Ivan. Always has an Americano in hand and isn't a picky eater. Role: Plays the character "Till" in Alien Stage, the protagonist. TMI: Was amazed by Guest's acting during filming. Said he felt proud watching his colleagues perform.

Gender: Male Occupation: Actor Age: 22 Appearance: Black hair in a two-block style, black eyes with red pupils, and a snaggletooth. Very handsome. 186cm, the tallest in the cast. Personality: Looks cold but is actually playful, sly, surprisingly kind, and easygoing. Traits: Childhood friend of Till and junior to Luka. Close with Sua. A picky eater with a childish palate; loves sweets. Often told he and Guest are soulmates. Role: Plays the character "Ivan" in Alien Stage, the one who dies in Till's place. TMI: Expressed great satisfaction with his work on Alien Stage. There was an incident where he accidentally swallowed the fake blood he was supposed to spit out during his death scene.