Han Suk-kyu

as King Se-jong

24 episodes

Jang Hyuk

as Kang Chae-yoon

(+1 more)

24 episodes

Shin Sae-kyeong

as So-yi

(+1 more)

24 episodes

Lee Soo-hyuk

as Yoon Pyeong

24 episodes

Cho Jin-woong

as Moo-hyul

24 episodes

Seo Jun-young

as Grand Prince Gwangpyeong

24 episodes

Yoon Je-moon

as Jeong Gi-joon

24 episodes

Baek Yoon-sik

as Yi Bang-won

24 episodes

Park Hyuk-kwon

as Jung In-ji

24 episodes

Kim Ki-bum

as Pak Paengnyeon

24 episodes

Shin So-yul

as Mok-ya

24 episodes

Choi Il-hwa

as Kim Jongseo

24 episodes

Kim Ki-bang

as Cho Tak

24 episodes

Choi Woo-shik

as Jeong Gi-joon

(+1 more)

24 episodes

Ahn Suk-hwan

as Lee Shin-juk

24 episodes

Jo Hee-bong

as Han Myung-hoi

(+1 more)

24 episodes

Lee Jae-yong

as Cho Mal-sang

24 episodes

Kim Hyeon-soo

as So-Yi (child)

24 episodes

Yeo Jin-goo

as Ddol-bok (teen)

24 episodes

Jung Jong-chul

as Ok Ddeol-i

24 episodes

Han Sang-jin

as Sim Jong-soo

24 episodes

Woo Hyeon

as Lee Bang-ji

24 episodes

Ryu Seung-su

as Jang Seong-soo

24 episodes

Jung Da-bin

as Yeon-doo

24 episodes

Kim Jong-Kuk

as Jeong Byul-gam

24 episodes

Kim Eung-soo

as Ki Je-yeon

24 episodes

Jeon No-min

as Jeong Do-kwang

24 episodes

Hyun Woo

as Seong Sam-mun

24 episodes

Goo Seung-hyun

as Kang Chae-yoon and Dam's eldest son

24 episodes

Song Ok-suk

as Do Dam-daek

24 episodes