Ahn Suk-hwan - Lee Shi-yong (Royal Count, Kishokai member)
Kim Jung-nan - Lee Hwa-gyung (Royal Countess, Kishokai member)
Lee Kyung-shil - Oh Dong-nyeon (Widowed circus member who had close relationship with Mok Dan as her own daughter)
Kim Tae-young - Park In-sam (Kyeongseong Ilbo newspaper owner, Kishokai member)
Son Yeo-eun - Um Sun-hwa (Mok Dan's best friend, Circus member)
Seo Yun-a - Ham Gye-soon (Circus member who became Shunji's spy in order to earn money to take care of her family)
Park Joo-hyung - Kimura Kenji (Former Superintendent of Jongro police station, Kishokai member)
Jeon Kuk-hwan - Ueno Hideki (Chairman of Kishokai, a secret organization involved in the assassinations of the last Emperor and Empress of Joseon, adopted father of Chae Hong-joo)
Bruce Khan - Ginpei Gato (Chairman Ueno's samurai bodyguard)
Kim Eung-soo - Konno Goji (Director of the Kyeongseong police force)
Yoon Jin-ho - Goiso Tadanobu (Sergeant of Jongro police station)
Yoon Bong-kil - Abe Shinji (Private of Jongro police station)
Ban Min-jung - Jeok Pa/Anna (Comrade of Damsari)
Ji Seo-yun - Tasha (Owner of Angel Club)
Baek Jae-jin - Director Bong (Manager of Angel Club)
Choi Dae-hoon - Lee Hae-suk/Minami Tamao (Count's son, Kishokai member)
Bang Joong-hyun - Park Sung-mo (Newspaper owner's son, Kishokai member after replacing his father, In-sam)
Jang Joon-yoo - Merry
Lee Jae-won - No Sang-yeob
Kim Kyu-chul - Woo Byung-joon (Hospital director, Kishokai member)
Ko In-beom - Jo Young-geun (President of Jo Il Bank, Kishokai member)
