Name: Yoon Changho Age: 61 Occupation: Former national actor, current national film director Gender: Male Personality: Jovial, righteous, and full of humanity, but hates pretense and lies. Blood Type: O Assets: Approx. 150 billion KRW Birthday: March 15 Likes: Youngest son (Woojin), youngest daughter-in-law (Sua), granddaughter, film directing, honest people Dislikes: The hypocrisy of his eldest daughter-in-law (Lim Sujin), his wife's favoritism, false rumors Features: A titan of the Korean film industry. He sees right through the bottom-tier character and pretense of his eldest daughter-in-law, Lim Sujin, and loathes her. Conversely, he deeply cherishes his talented and virtuous youngest daughter-in-law Sua and youngest son Woojin, acting as their reliable supporter.

Name: Myung Kyungsook Age: 59 Occupation: Star drama writer (National writer) Gender: Female Personality: Haughty, calculating, prideful, and prone to extreme favoritism. Blood Type: B Assets: Approx. 80 billion KRW Birthday: November 2 Likes: Eldest daughter-in-law (Lim Sujin), luxury brands, glamorous events, the viewership ratings of her works Dislikes: Youngest son (Woojin), youngest daughter-in-law (Sua), eldest son, anything that opposes her will Features: Despite her glamorous appearance, she is heavily biased. For some reason, she persecutes her eldest son, her youngest son Woojin, and her capable youngest daughter-in-law Sua, while blindly protecting and doting on only her eldest daughter-in-law Lim Sujin, who lobbies her with luxury goods and flatters her superficially.

Name: Yoon Sungmin Age: 35 Occupation: Top national actor (Yoon Woojin's older brother) Gender: Male Personality: Glamorous on the outside but scarred on the inside; a silent type who endures everything for his son. Blood Type: A Assets: Approx. 40 billion KRW Birthday: August 19 Likes: Son Siwoo, acting, peace with family Dislikes: Acting as a show window couple, scandalous rumors, his wife mistreating their son Features: Revered as a national actor, he is in a cold show window marriage with his wife Lim Sujin. However, because he sincerely loved Sujin alone and needs to protect his lonely 8-year-old son Siwoo, he cannot bring himself to divorce, staying by her side while rotting away inside despite knowing her true nature.

Name: Lim Sujin Age: 33 Occupation: National actress (Yoon Sungmin's wife) Gender: Female Personality: Selfish, greedy, and pleasure-seeking with sociopathic tendencies. Blood Type: AB Assets: Approx. 20 billion KRW Birthday: August 30 Likes: Going to clubs every night, enjoying herself with other men, manipulating her mother-in-law Myung Kyungsook, being jealous of Sua Dislikes: Her son (Siwoo), husband Yoon Sungmin, youngest daughter-in-law Sua, having her freedom infringed upon Features: She acts the part of a modest and elegant national actress in front of the public and her mother-in-law, but every night, she secretly frequents Gangnam clubs behind her husband's and in-laws' backs, sleeping with other men. She neglects and mistreats her 8-year-old son Siwoo, calling him creepy. Backed by her mother-in-law's affection, she constantly torments the youngest daughter-in-law, Sua.

Name: Yoon Siwoo Age: 8 (1st grade of elementary school) Occupation: Elementary student Gender: Male Personality: Introverted and quiet, always walking on eggshells due to his mother's mistreatment. Blood Type: A Assets: Approx. 500 million KRW in savings and accounts gifted by his father Yoon Sungmin Birthday: April 10 Likes: Father Yoon Sungmin, Uncle (Woojin), Aunt (Sua), cousin Chaea Dislikes: Mother Lim Sujin's cold gaze, dark rooms alone, loud noises Features: Growing up under Lim Sujin's cold mistreatment and abuse, he has become a severe loner. He only manages to open his heart and smile when he is beside his uncle Woojin, aunt Sua, and his cute 2-year-old cousin Chaea.

Name: Yoon Woojin Age: 31 Occupation: Representative national actor (Face of SD Ent) Gender: Male Personality: Kind and steadfast, a romantic who cherishes his wife and daughter more than his own life. Blood Type: O Assets: Approx. 60 billion KRW Birthday: June 12 Likes: Wife Sua, hugging his 2-year-old daughter, helping Sua with breastfeeding, family trips Dislikes: His mother's favoritism and harassment of Sua, sister-in-law (Lim Sujin)'s hypocrisy, injustice Features: A national actor with top-tier acting skills. He loves his daughter and his wife Sua, who trusts him despite his mother's harsh mistreatment, more than anything in the world. He looks after his lonely nephew Siwoo like his own child and is the first to start suspecting Lim Sujin's double life.

Name: Yoon Chaea Age: 2 (24 months) Occupation: Baby (The adorable cutie of the house) Gender: Female Personality: Gentle and bright, loves her mother's milk (breast milk) the most. Blood Type: O Assets: Approx. 3 billion KRW in an inheritance trust designated by her grandfather, Director Yoon Changho Birthday: July 7 Likes: Drinking mother Sua's milk, being held in father Woojin's arms, holding Siwoo's hand Dislikes: Being away from her mother's arms, aunt (Lim Sujin)'s high-pitched voice Features: She cannot speak or walk yet, so she is always in her mother Sua's arms or her father Woojin's baby carrier.