- Park Ji-hu
- Â Nam On-jo 12 episodes, 2022
- Yoon Chan-young
- Â Lee Cheong-san 12 episodes, 2022
- Cho Yi-hyun
- Â Choi Nam-ra 12 episodes, 2022
- Park Solomon
- Â Lee Su-hyeok 12 episodes, 2022
- Kim Bo-Yoon
- Â Seo Hyo-ryung 12 episodes, 2022
- Lim Jae-hyeok
- Â Yang Dae-su 12 episodes, 2022
- Ahn Seung-kyoon
- Â Oh Joon-yeong 12 episodes, 2022
- Son Sang-yeon
- Â Jang Woo-jin 12 episodes, 2022
- Jeon Bae-soo
- Â Nam So-ju 12 episodes, 2022
- Lee Kyoo-hyung
- Â Song Jae-ik 12 episodes, 2022
- Greg Chun
- Â Jae-Ik 12 episodes, 2022
- Rich Ting
- Â Chief of Staff Seon-Moo 12 episodes, 2022
- Harrison Xu
- Â Cheong-san 12 episodes, 2022
- Victoria Grace
- Â On-jo 12 episodes, 2022
- Lisa Yamada
- Â Hyo-Ryeong 12 episodes, 2022
- Darren Keilan
- Â Lee Su-Hyeok 12 episodes, 2022
- Ho Eun Jin
- Â Jung Min Jae 12 episodes, 2022
- Arvin Lee
- Â Yang Dae-su 12 episodes, 2022
- Yoo In-soo
- Â Yoon Gwi-nam 11 episodes, 2022
- Kim Jin-Young
- Â Kim Ji-min 11 episodes, 2022
- Ha Seung-ri
- Â Jang Ha-ri 11 episodes, 2022
- Lee Eun-saem
- Â Park Mi-jin 11 episodes, 2022
- Han Yeol Yang
- Â Yoo Joon-sung 11 episodes, 2022
- Oh Hye-soo
- Â Min Eun-ji 11 episodes, 2022
- Kim Byeong-cheol
- Â Lee Byeong-chan 11 episodes, 2022
- Tom Choi
- Â Nam So-ju 11 episodes, 2022
- Nicole Fong
- Â Ha-ri 11 episodes, 2022
- Jin Ho-eun
- Â Jung Min-jae 10 episodes, 2022
- Ahn Ji-ho
- Â Kim Cheol-soo 9 episodes, 2022
- Bae Hae-sun
- Â Park Eun-hee 9 episodes, 2022
- Lee Ji-hyun
- Â Lee Cheong-san's mother 9 episodes, 2022
- Jo Dal-hwan
- Â Jo Dal-ho 9 episodes, 2022
- Park Jae-Chul
- Â Jeon Ho-chul 9 episodes, 2022
- Ivan Mok
- Â Min-jae 9 episodes, 2022
- Michael Shen
- Â Various / ... 9 episodes, 2022
- Lee Yoo-mi
- Â Lee Na-yeon 8 episodes, 2022
- Lee Min-goo
- Â Lee Jin-soo 8 episodes, 2022
- Woo Ji-hyeon
- Â Kim Woo-shin 8 episodes, 2022
- Oh Geun-Wook
- Â Aide 1 8 episodes, 2022
- Han Ji-Eun
- Â Aide 2 8 episodes, 2022
- Kim Han-Sang
- Â Aide 3 8 episodes, 2022
- Ru Kumagai
- Â Lee Na Yeon 8 episodes, 2022
- Jacqueline Misaye
- Â Ji-Min / ... 8 episodes, 2022
- Ham Sung-Min
- Â Han Gyeong-su 7 episodes, 2022
- Na-Young Ko
- Â Lee Jin-soo's mother 7 episodes, 2022
- Sanyee Yuan
- Â Anchorwoman / ... 7 episodes, 2022
- Ahn Se-bin
- Â Se-bin 6 episodes, 2022
- Lee Chae-eun
- Â Park Hee-su 5 episodes, 2022
- Lee Sang-hee
- Â Park Sun-hwa 5 episodes, 2022
- Kim Jong-tae
- Â Jin Seon-mu 5 episodes, 2022
- Yoon Kyung-ho
- Â Jung Yong-nam 5 episodes, 2022
- Oh Hee-jun
- Â Son Myeong-hwan 4 episodes, 2022
- Lee Myeong-ho
- Â Medical Officer 4 episodes, 2022
- Lee Si-hoon
- Â Orangibberish 4 episodes, 2022
- Dong Hyeon-bae
- Â Park Young-hwan 4 episodes, 2022
- Park Ji-Yeol
- Â Staff Sgt. Lee Jae-jun / ... 4 episodes, 2022
- Kim Ju-a
- Â Yoon I-sak 3 episodes, 2022
- Shin Jae-hwi
- Â Chang-hoon 3 episodes, 2022
- Jung Yi-seo
- Â Kim Hyeon-ju 3 episodes, 2022
- Ryu Sung-hyun
- Â Choi Sung-Won 3 episodes, 2022
- Cho Ji-Ahn
- Â Jang Do-min 3 episodes, 2022
- Eom Hyo-Seob
- Â Principal 3 episodes, 2022
- Jonathan Tanigaki
- Â Myeong-Hwan 3 episodes, 2022
- Park Boo-gun
- Â NIS agent 2 episodes, 2022
- Lee Yo-Sung
- Â Lee Cheong-San's father 2 episodes, 2022
- Yoon Byung-hee
- Â Kang Jin-gu 2 episodes, 2022
- Jung-Yeon Kim
- Â Kim Min-ji 2 episodes, 2022
- Ashley Park
- Â Hyeon-Ju 2 episodes, 2022
- Brandon Win
- Â Lee Jin-su 2 episodes, 2022
- Larry Herrera
- Â Zombie Child 2 episodes, 2022
- In Gyu-sik
- Â NIS Field Agent 1 episode, 2022
- Na Mi-hee
- Â Investigator 1 episode, 2022
- Eom Ji-man
- Â Military Officer 1 episode, 2022
- Chae Dong-Hyun
- Â Archery Coach 1 episode, 2022
- Hwang Bo-Un
- Â Lee Ha-rim 1 episode, 2022
- Park Joon-Sang
- Â Military Doctor 1 episode, 2022
- Jung Doo-kyum
- Â Party Leader 1 episode, 2022
- Kim Han-Deul
- Â Shin Hyung-seo 1 episode, 2022
- Kwon Hyuk-soo
- Â Priest 1 episode, 2022
- Myeong Jae-Hwan
- Â Car Accident Husband 1 episode, 2022
- Gwang-jae Seo
- Â Government Official 1 episode, 2022
- Ahn Si-Ha
- Â Kim Kyung-mi 1 episode, 2022
- Lee Yoon-sang
- Â 119 ESM Fire Rescue's chief 1 episode, 2022
- Kang Moon-kyung
- Â Prime Minister 1 episode, 2022
- Hwang Sun-Jung
- Â Car Accident Wife 1 episode, 2022
- Kim Tae-hoon
- Â Subway Creator 1 1 episode, 2022
- Kim Seong-Yong
- Â Centre Director Cha Hyun-Seok 1 episode, 2022
- Ko Han-min
- Â Doctor 1 episode, 2022
- Kim Bong-soo
- Â Hyosan Evacuee 1 episode, 2022
- Han Sangchul
- Â Archery Team Bus Driver 1 episode, 2022
- Choi Hye-seo
- Â Hyosan Evacuee 1 episode, 2022
- Ji Sung-Geun
- Â Apartment Security Guard 1 episode, 2022
- Park Young-bok
- Â Groundskeeper 1 episode, 2022
- Kim Hyun-Chang
- Â Ahn Young-sam 1 episode, 2022
- Chase Yi
- Â Cheong-san's Father 1 episode, 2022
