Lee Sun-kyun as King Yejong of Joseon

Ahn Jae-hong as Yoon Yi-seo

Kim Hie-won as Nam Geon-hee

Gyeong Su-jin as Seon-hwa

Jung Hae-in as Heuk-woon

Ju Jin-mo as Jik Je-hak

Jang Young-nam as Soo-bin

Kim Hong-pa as Prime Minister

Kim Eung-soo as First Vice-Premier

Jo Young-jin as Second Vice-Premier

Kang Chan-hee as Young Yejong

Kim Gil-dong as Gunman #1

Uhm Ji-sung as Prince Jaseong

Yang Jun-seok as Nam Geon-hee's Subordinate