- Lee Dong-wook
- Â Ryu Soo-yeol 12 episodes, 2021-2022
- Han Ji-Eun
- Â Lee Hee-Gyeom 12 episodes, 2021-2022
- Cha Hak-yeon
- Â Oh Kyung-Tae 12 episodes, 2021-2022
- Cho Dong-in
- Â Jeong Chan-gi 12 episodes, 2021-2022
- Lee Hwa-ryong
- Â Kim Kye-shik (Team #1 Leader Narcotics Crime investigation) 12 episodes, 2021-2022
- Kim Dae-gon
- Â Ryu Dong Yeol 9 episodes, 2021-2022
- Kim Hieora
- Â Boss Yong 8 episodes, 2021-2022
- Wi Ha-joon
- Â K 7 episodes, 2022
- Cha Si-won
- Â Yang Jae-seon 7 episodes, 2022
- Park Se-joon
- Â Nam Eun Seok 7 episodes, 2022
- Jung Sung-il
- Â Jung Yun Ho / ... 6 episodes, 2022
- Lim Ki-hong
- Â Assemblyman Do Yu Gon 5 episodes, 2021
- Kim Seon-hwa
- Â Dr. Hong Suk Kyung 2 episodes, 2022
- Lee Dong-kyu
- Â TVC reporter 1 episode, 2021
- Shin Joo-Hwan
- Â Heo Jong Goo 1 episode, 2021
- Eom Ji-man
- Â Police officer 1 episode, 2022
- Choi Jung-in
- Â Yang Jae-seon's Wife 1 episode, 2022
- Kang Jung-im
- Â Jeong Yu-Na's neighbor 1 episode, 2022
