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