as The Assassin / Detective Kang

as

as Jae-in

as Choi Kang-hu

as

as Taekdong

as

as Father Kim

as Seong-joon

as Sin Se-do

as Lee Yeon-woo

as Gam Poong-Ki

as

as Koo Hyun-mo

as Won-ho

as Lee Jin Sang

as Eun Kyung-Soo

as Hee-Soo

as Mo Hwi-Chul

as Mo Hwi Cheol

as Himself

as Han Jae-hee

as Self

as Cha Jung-Han

as Self

as K

as Sung-kyun

as Wang Seong-ki

as Moo-myung / Lee-bi

as Lee Seok

as Yoon Cheo-yong

as Himself

as Jang Kyu-Jik

as Kim Seung-hyun

as Baek Dong-su

as

as Kim Dong-soo

as

as

as Song Tae-ha

as On Dal-soo

as

as Go Man-soo / Karl Go

as Gong-chi

as Jang Cheol-Su

as

as

as Lee Bong-sam

as Nam Kyung Soo

as Nam Kyung Soo

as Jino

as Ju-hak

as Himself

as

as Ji-Hoo

as

as The writer