as Kyung Woo-jin
as Yoon-chul / Charlie
as Teenager TaeSoo
as Yoo Sung-geun
as Teacher Park
as Dong-gun
as Kim Jun-young
as Jae-wook
as Lee Chang-seob
as Joong-suk
as Il-yeong
as Kim Han-soo
as Jin-su
as Employee
as Jjaeng
as Jung-hoon
as Baek Joon-ki
as Noh Jung-Do
as Kim Gangu
as Lee Ho-sung
as Go Suk-Bin
as Seok Jun-su
as Han Min-oh
as Jin Young-Min
as Seo Ki-hyun
as Bojang of Goguryeo
as Jung Tae-yang
as Lee Hyun-myung
as Cha Jin-oh
as Han Ji-hoon
