Oh Dae-hwan

Wang Chil-seong

A palace physician

Ma Sang-goo

Michael Baek, Baek Dong-ju's uncle and chief priest of Bongsu-dong Temple.

Leader of Team A

Kang Tae-ho

Song Joon-sun — Young-dal and Ok-boon's eldest child.

Goo Dae-gil

Lee Yong-gi: A police sergeant in the homicide unit. He is described as unhinged and with a nasty temper.

Oh Bong-sam, an investigator.

Kim Jung-soo

Cheon Pil-jae / Moong Chi aka Bundle

Doo-chil, one of the servants of the corrupt Minister of War of Joseon.

Lee Yong-jae

Jo In-sung

Na Suk-chul

Ma Jin-seok

..... Detective Lim Chul-ho

Ma Chang-soo, younger brother of Hee-ra