The Escape of the Seven

• Um Ki-joon as Matthew Lee / Lee Hwi-so[12]

• Min Young-ki as Lee Hwi-so (before plastic surgery)[16]

Da-mi's adoptive father who was framed for Da-mi's murder and sentenced to death. After his escape from prison and undergoing plastic surgery, he returns as Mathew Lee, a Korean-American man who runs the biggest mobile platform company in South Korea but is a mysterious figure behind a veil. Only a few people know who he is. He plans to take revenge for Da-mi and his wife's murder.

• Hwang Jung-eum as Geum Ra-hee[12]

The CEO of a drama production company and Da-mi's biological mother. She is skillful and aggressive at her job. Geum Ra-hee values money and success the most in her life and she will take any path to achieve that. To receive a huge inheritance, she tries to find her daughter whom she abandoned 15 years ago.

• Lee Joon as Min Do-hyeok[17]

A man who used to be a gangster. He does not have a dream or hope for his life. If he trusts someone once, he will trust them for good. Due to this, his life is filled with a series of betrayals. He believes his younger brother and mother died due to Da-mi's adoptive mother, but later found out that it was Jin-mo who killed them, and it led to him secretly acting as a spy for Matthew Lee in order to exact revenge on Jin-mo.

• Lee Yu-bi as Han Mo-ne[18]

A young woman wants to become an idol and she is admired by her friends. She is Da-mi's best friend, whom she frames and ruins her life. She seems to have a perfect life with a beautiful appearance and rich family background, but she has a weakness. Her weakness is that she consistently turns out lies. Her life is full of these lies.

• Shin Eun-kyung as Cha Ju-ran[12]

An OB-GYN. She lives with Bang Chil-sung and loves the money he has.

• Yoon Jong-hoon as Yang Jin-mo[12]

The CEO of Cherry Entertainment. He is usually gentle, but once his anger explodes nobody stops him. He is extremely greedy and will do anything for profit.

• Jo Yoon-hee as Go Myung-ji[19]

An art teacher at school. She creates a lie to protect something precious to her and she spreads a weird rumor at school to hide her weak point.

• Jo Jae-yoon as Nam Cheol-woo[20]

A chief detective of Deokseon Police Station. He frames Da-mi's father for murder and drug dealing as well as for being a drug addict.

• Lee Deok-hwa as Bang Chil-sung[12]

Da-mi’s paternal Grandfather who is a very wealthy man-building owner. He loves Da-mi very much and genuinely care for her

• Yoon Tae-young as Kang Ki-tak[21]

CEO of Yeolbaek Entertainment who is kept in check by Jin-mo. He also former boss of the Central Party, a gangster group centered in Seoul.

• Kim Do-hoon as Shim Joon-seok / K[22][23]

A mysterious figure who was the mastermind of the events happening in the drama, and the real killer of Da-mi. His real identity was Shim Joon-seok, heir apparent of Seong-chan Group

• Jung Ra-el as Bang Da-mi[24]

A school star, Bang Chil-sung's granddaughter and Geum Ra-hee's biological daughter. She is actually the descendant of a wealthy tycoon, the only grandchild of Chairman Bang Chil-sung, but due to heart disease, her mother abandoned her for 15 years. When her biological mother brought her back home, she became a tool to inherit her grandfather's property in her mother's plan.

• Seo Young-hee as Park Nan-young[25]

Da-mi's adoptive mother. She was murdered by Jin-mo, who framed her for killing Do-hyuk's family.

• Kim Ki-doo as Joo Yong-ju[16]

Jin-mo's subordinate. He was responsible for spreading fake news to frame Da-mi and her adoptive father for having a sexual relationship in order to hide Mo-ne's secret

• Ahn Eun-ho as Hong Man-du[16]

Jin-mo's subordinate.

• Han Bo-reum as Noh Paeng-hee[26]

A bar owner.

• Jung Da-eun as Song Ji-ah[16]

A bully at Myeongju Girls' High School. After reaching adulthood, she grew remorseful for bullying Da-mi, and also fell out with Mo-ne, who often ordered her to do the bullying and even stole Ji-ah's written songs as her own. She was revealed to have taken the blame of murdering her abusive father in self-defence to protect her elder sister from prosecution, and Mo-ne made use of this secret to force Ji-ah to do her bidding.

• Eom Ji-yoon as Yoo-jin[16]

A bully at Myeongju Girls' High School.

• Jang Ha-kyung as So-yeon[16]

A bully at Myeongju Girls' High School.

• Kim Hyun as Yoon Ji-sook[27]

Mo-ne's deaf-mute mother.

• Eun Hae-sung as Han Kyung-soo[28]

Mo-ne's eldest younger brother with a confident personality and strong assertiveness.

• Lee Eugene as Han Cheong-soo[29]

Mo-ne's younger brother.

• Im Seong-gyun as Min Jae-hyuk[16]

Do-hyeok's younger brother.

• Lee Jong-nam as Jung Mi-so[16]

Do-hyeok's mother.

• Ji Seung-hyun as Um Ji-man[30]

A deputy prosecutor who fabricated the evidence of the killings to seek a death sentence for Lee Hwi-so on the grounds of murdering Da-mi and Bang Chil-sung.

• Lee Jung-hyun as Baek Ik-ho[31]

A baker in the detention center. He was Ki-tak's loyal henchman while in and outside of prison

• Lee Boo-young as Executive Director Hwang[32]

A silent assistant and executive assistant to Chairman Bang Chil-sung.

• Han Da-hee as Oh Hye-bin[33]

A head secretary of Geum Ra-hee.

• Handara as Hong Sa-ra (ep. 2)[34]
• Danny Ahn[35]
• Kim So-yeon[36]

The work brings together author Kim Soon-ok with director Jo Dong-min for the third time after the series The Last Empress (2018) and The Penthouse: War in Life (2020–21).[37] The series will be produced by SBS Drama Division called Studio S, in cooperation with Chorokbaem Media.[6] The cost of producing the series is about 46.2 billion won (includes seasons 1 and 2).[9]

On February 24, 2023, it was revealed that the series is preparing for a second season.[38]

On September 22, 2022, the cast was confirmed with the start of filming for the series.[12] Filming for the first season ended on July 6, 2023. Filming for the second season began in July 2023.[39]

On December 5, 2022, the production company apologized for illegally parking a small car on the sidewalk and paid a fine to the Parking Management Division of the Administrative Support Bureau of the District Office.[40]