Jang Gwang

Kang Soon-hong

Doctor

Jang Sa-pyoung

Yeon Jo-mun, a powerful man who directly placed the King on the throne.

Kim Nak-cheon, Dali's father who is the director of Cheong-song Art Museum.

Retired medical examiner (Ep.17-18)

Yoon Hyung-gyu

Moon Byung-hak's friend (Ep.8)

President Jo (Chairman) (Ep.4)

Baek Jong-goo (Ep. 7–8)

Jo Jang-kwang, (Haesan Group chairman)

Eunuch Jo

(ep 1)

Pastor Wang

Ha Jae-ho, Wan-seung's father

Son Young-sik

Yoon Dae-sik / Sa Oh-jeong (based on Sha Wujing)

Cha Young-woon

Ha Jae-ho

Hong Il-kwon

Jo Gwang

Bub Gong

Park Chul-min

Chairman Go

Yi Gwi

Traditional fortune-teller (episode 1)

Coach Bang

High school principal (ep. 2)

Jinjo, a monk

Jeon Kang-seok (70s) Park Doo-shik as Jeon Kang-seok (28)

Maeng Joo-ho

Lee Pyung-ik

Retired officer Bong