Bầu Trời Rực Đỏ

Choi Kwang Il

Hong Eun O [Cheon Ki's father]

Kim Kwang Gyu

Choi Won Ho [Baekgyu Institute headmaster]

Yoon Sa Bong

Kyun Joo Daek [Baekgyu Institute housekeeper]

Jung Young Ki

Kang Chun Bok [Baekgyu Institute steward]

Hong Jin Ki

Cha Young Wook [Cheon Ki's best friend]

Hong Kyung

Choi Jeong [Baekyu painter]

Jang Hyun Sung

Ahn Gyeon [Master of Gohwawon]

Go Wook

Moo Young [Ha Ram's bodyguard]

Kim Hyun Mok

Man Soo [Ha Ram's servant]

Ri Min

Jang Uk Jin [Seomungwan Astronomy supervisor]

Bae Myung Jin

Park Sa Ryuk [Seomungwan Astronomy historian]

Yang Hyun Min

Jung Soen Nae [Wolseongdang]

Jo Sung Ha

King Seong Jo

Ko Kyu Pil

Go Pil [Lee Yul's chief butler]

Chae Gook Hee

Mi Soo [Royal shaman]

Jung Dong Geun

Ahn Young Hoe [Lee Hoo's aide]

Lee Sang Woon

Seo Ki Jung [Lee Hoo's scholar]

Jo Won Hee

Sung Jin Ki [Court minister]

Park Seon Woo

Kim Hong Seo [Court minister]

Ha Nam Woo

Shim Jung Woo [Minister]

Kim Joo Young

Lee Hyun Mo [Minister]

Moon Sook

Samshin [Goddess of Life]

Cho Ye Lin

Ho Ryung [Tiger Goddess / Palace protector]

Kim Ik Tae

Kang Hee [King Seong Jo's advisor]

Kim Geum Soon

Wol Seon [Head shaman, Shamanist Bureau]

Ha Yul Ri

Mae Hyang [Gisaeng, Ha Ram's spy]

Cha Ji Hyuk

[Lee Hoo's bodyguard]

Jang Yong Bok

[Chief eunuch]

Woo Tae Ha

[Fortress company]