- Choi Kang-hee
- Â Baek Chan Mi 16 episodes, 2020
- Yoo In-young
- Â Lim Ye Eun 16 episodes, 2020
- Kim Ji-yeong
- Â Hwang Mi-soon 16 episodes, 2020
- Lee Jong-hyuk
- Â Dong Gwan-soo 16 episodes, 2020
- Won Ki-Joon
- Â Kang Seong-joo 16 episodes, 2020
- Jin Su-hyeon
- Â Hyo-jin 16 episodes, 2020
- Lee Sang-Yeob
- Â Yoon Seok Ho 15 episodes, 2020
- Lee Jun-young
- Â Kang Woo-won 15 episodes, 2020
- Heo Jae-ho
- Â Byeon Woo Seok 15 episodes, 2020
- Woo Hyeon
- Â Myeong Gye Cheol 13 episodes, 2020
- Park Kyung-Soon
- Â Bae Mu Hyeok 13 episodes, 2020
- Jeong In-gi
- Â NIS Chief Seo Gook Hwan 12 episodes, 2020
- Kim Yong-hee
- Â Ok Cheol 11 episodes, 2020
- Cha Soo Yeon
- Â Shim Hwa Ran 10 episodes, 2020
- Lee Sang-hoon
- Â Tak Sang Gi 8 episodes, 2020
- Lee Seung-hyeong
- Â Nam Bong Man 8 episodes, 2020
- Han Soo-jin
- Â Secretary Koo 5 episodes, 2020
- Hwang Bo-mi
- Â Gan Tae Hee 4 episodes, 2020
- Bae Jin-woong
- Â Pi Cheol Woong 4 episodes, 2020
- Sung Hyuk
- Â Kwon Min Seok 3 episodes, 2020
- Anastasiia Sokolova
- Â Barbara Massalitinova 2 episodes, 2020
- Seo Beom-sik
- Â NIS agent 2 episodes, 2020
- Ko Han-min
- Â NIS Agent 1 episode, 2020
- Hong Seo-jun
- Â Team leader 1 episode, 2020
- Park Ok-chool
- Â Prisoner 1 episode, 2020
- Jung Dong-geun
- Â NIS Agent 1 episode, 2020
- Eom Ji-man
- Â Security guard 1 episode, 2020
- Yang Hee-Won
- Â Boy in elevator 1 episode, 2020
- Kwon Ban-suk
- Â Security guard 1 episode, 2020
- Nam Sung-jin
- Â Chief Security Manager 1 episode, 2020
- Kim Kyung Sook
- Â Park Kyung Sook [Il Kwang Hitech] 1 episode, 2020
