Baek Sung-hyun

as Yoon Jung-won

as Kyeon Ja

as Park Tae-seong

as Baek Jung-goo

as Sung-doo

as Ji-oh

as Kim Yeon

as Goo-rim

as Cheol-soo's uncle

as Self

as Do Hak Young [Cable Man]

as Shim Dae-Sik

as Kang Byung-jin

as Choi U-ri

as Cha Song Ju (Young)

as Lee Young-gook

as young Gungbok

as Jang Kyung Joon

as Gil Choong-shik