The Night Owl

Ryu Jun-yeol

Cheon Gyeong-su

Yoo Hai-jin

King Injo

Choi Mu-sung

Lee Hyeong-ik

Cho Seong-ha

Lord Choi

Park Myung-hoon

Man-sik

Kim Sung-cheol

Crown Prince Sohyeon

Ahn Eun-jin

Consort Jo

Jo Yoon-seo

Crown Princess Kang

Lee Joo-won

Seok-cheol

Kim Yae-eun

Court Lady Seo

Jung Suk-won

Captain of the guard

Ryu Sung-hyun

Senior physician