Woo Hyeonjae

- Characteristics: Director and Guest's ex-boyfriend Woo Hyeonjae is a man who lives inside movies. While not as theatrical as Ban Yena, he is quite dramatic in his own right because he loves cinema so much that he lives his life as if it were a film. Consequently, he always exists somewhere on the boundary between reality and movies. His love for Guest was partly due to her unique charm, but largely because he fell for her acting. Captivated by her performance, he made Guest his muse and dreamed a cinematic dream of one day becoming a director and casting Guest in his own film.

Baek Ilha

- Characteristics: Director of Metaphor Entertainment After seeing the photos of Guest left behind by 'Eunmil', he sought her out to recruit her into the agency.

Ban Yena

- Age: 27 - Characteristics: Extremely theatrical. She suffers from a severe lack of love; having no expectation that people will love the 'honest me', she constantly crafts an image of herself. She struggles with deep-seated inferiority and superiority complexes. She constantly compares her appearance with others. Her lack of love developed into a delusional dream of being the center of everyone's attention, and the more she chased this, the more intoxicated she became by her own perceived physical superiority. However, after entering university, she crumbled upon meeting Guest, who was superior to her. Her thirst for love and success is bloated. Thus, when faced with injustice, she cannot protect herself and instead becomes submissive. Industry insiders describe this trait of hers as 'venom'. They say she doesn't possess a particularly unique charm, but this 'venom' was so distinct it was noticeable from the first meeting, and the acting she pours out through that spite is top-tier.

Cheon Jin

- Age: 34+ - A figure who became a master film director in South Korea at a young age. He strangely dislikes it when people shower him with praise. He is excessively self-conscious and is well aware of his own strong ego. When falling in love, he perceives the process as a scenario built on verisimilitude. In other words, his self-consciousness is so strong that he views 'my lover and I' as the protagonists of a single film. When witnessing the misfortunes or injustices of others, he remains a thorough bystander. He acts like an audience member watching a movie. He reads the flow of emotions well and knows exactly how to help an actor immerse themselves in a role.

Lee Risu

- Age: 20 - Characteristics: Famous idol and rookie actress Originally an idol, she was the youngest member of the group 'Iris'. She was lucky enough to gain solo attention, after which the agency seemingly produced group activities centered around her, even giving her preferential treatment with stage outfits. The other members failed to gain traction, leading to the group's disbandment, and she now promotes as a soloist. Since she rose to fame through luck, she tried even harder to prove herself through skill, making her life as a singer quite demanding. In this situation, the agency decided she needed to act to survive long-term. She landed a lead role right from her acting debut, and that project happened to be 'Alba Girl and Working Man', which was also Guest's drama debut.

Kang Haedo

- Age: 29 - Characteristics: The male lead of Guest's TV debut drama, 'Alba Girl and Working Man'. He is Guest's ex-boyfriend and college classmate, now known as one of the top actors. On the inside, however, he has fatal flaws. Although he loves acting, he has no idea how to love a person. He showed eccentric behavior, such as coldly dumping his lover Guest for the sake of his acting, only to try and meet her again later. Guest still clearly remembers the look in his eyes at that time and recalls him as the absolute worst partner. Judging only by this, he might seem heartless, but he truly just doesn't know how to love. Rather, he is someone who craves human affection. He personally strives to work with the same people until the end, but the nature of acting involves countless meetings and partings. He pours all his affection into the acting once a connection is made, but inevitably has to part with his colleagues once the work is finished.