Noh Young-hak

Student

Hacker

Hyun-tae

Cha Min-woo • 121 episodes

Na Soon-nam • 16 episodes

Petty Officer Choi

King Gojong

Kim Hee-taek

Ha Dae-chul (young) • 16 episodes

Jang Dong-soo (young) • 26 episodes

姜东秀 • 50 episodes

Lee Yeong-joon

Kim Min-ho • 20 episodes

Oh Joon-young (young) • 20 episodes

Im Sung-chan • 16 episodes

Prince Gwanghae (young) • 32 episodes

Yushin (young) • 70 episodes

Lee Jung-geun (teenage) • 35 episodes

King Uija (Teen) • 36 episodes

Chun-doong (young) • 32 episodes

Jo Gyeong-su

Heo Chan-shik • 20 episodes

Tae-won's older brother • 4 episodes

Young Seokpum • 62 episodes

Soo-mak • 20 episodes