- Cha Tae-hyun
- Â Jin Kang Ho 12 episodes, 2020
- Lee Sun-bin
- Â Kang Moo Young 12 episodes, 2020
- Jung Sang-hoon
- Â Lee Ban-seok 12 episodes, 2020
- Yoon Kyung-ho
- Â Teddy Jeong 12 episodes, 2020
- Ji Seung-hyun
- Â Tak Won 12 episodes, 2020
- Im Chul-hyung
- Â Seo In Jae 12 episodes, 2020
- Park Jung-woo
- Â Min Dae-jin 12 episodes, 2020
- Park Tae-san
- Â Maenson 12 episodes, 2020
- Jang Jin-hee
- Â Yeonjang 12 episodes, 2020
- Kim Yeong-Seong
- Â Detective Jo 12 episodes, 2020
- Kim Ji-wan
- Â Go Seung-woo 12 episodes, 2020
- Na Kyung Min
- Â [OCM Fact Check host] 12 episodes, 2020
- Kwon Hyuk-bum
- Â Lee Tae Sung 2 episodes, 2020
- Park Sung-joon
- Â Kang Moo Taek 1 episode, 2020
- Sung Byoung-sook
- Â Kang Ho's mother 1 episode, 2020
- Kim Kwang-kyu
- Â Gang boss 1 episode, 2020
- Song Hoon
- Â Real estate swindler 1 episode, 2020
- Han Ki-Woong
- Â Kim Min-Seok 1 episode, 2020
- Son Kwang-eop
- Â Myung Gi Chul 1 episode, 2020
- Han Hee-Jung
- Â Clinic receptionist 1 episode, 2020
