Choi Hong-il

as Mr Han

as Ji-man

as Head of the Investigation

as Profiler Suk

as Lee Kyung-jin

as Hee-yeol's Father

as Dong-ju's Father

as Police Commissioner

as Hunter

as Woo-ma king

as Nobel Family's Son

as Guard

as Veterinarian

as Cosmetics Company CEO

as Kim Yong-bok (Eps 3, 4)

as Choi Yeong-han / Recycling Plant Worker

as Park Dong-sik

as Ryu Il-ho

as Ha Taek-soo

as Jang So Chul

as Profiler Suk [Seo Yeong's superior]

as Ahn Su-young

as Kim Jun-ho