as young Suk-gyu
as Dong-yoon
as Park Hyeon-soo
as ID Pork
as Chu-won
as Kim Tae-hoon
as Go Jeong-hyeok
as Nabi
as Ah-jin
as Session musician
as Yoon Soo
as Geum Gang-san
as Yun-Su
as Kang Tae-Joon
as Kang Chan-sung
as Grand Prince Gwangpyeong
as Ha Seung-ri
as Shin Heung-bok
as Kang Oh-soo (young)
as young Shin Ryu
as Tae-yeol
as Shin Woo-hyuk
as Chun-Woo
as Park Jae-in
as Grand Prince Suyang
as Lee Ki-hyun
as Yeo Ui-ju
as Do Eun Chang / Do Shin Woo
as Jung Dong Min
as Kim Do-yoon
as Sang Min
as Man #5 best friend
as Song Ji-min
as Song Wan Ha
as Gwang Bak's school friend
