Noh Young-hak

as Student

as Hacker

as Hyun-tae

as Petty officer Choi

as King Gojong

as Kim Hee-taek

as Lee Yeong-joon

as Jo Gyeong-su

as Cha Min-woo

as Ha Dae-chul (young)

as Na Soon-nam

as Jang Dong-soo (young)

as 姜东秀

as Oh Joon-young (young)

as Prince Gwanghae (young)

as Im Sung-chan

as Kim Min-ho

as Lee Jung-geun (teenage)

as Yushin (young)

as King Uija (teen)

as Chun-doong (young)

as Heo Chan-shik

as Tae-won's older brother

as Seokpum (young)

as Soo-mak