Lee Soon-jae

An elderly citizen

Kim Man-bok, an old man who does various jobs around Eunpo.

Kim Dae-ma

Goo Se-joong, a notable lawyer and the saviour of B&G Law Firm.

Oh Yang-chon's father

Jang Kook-hwan (89): founder of Cheong-A corporation

Yi Ja-chun, Yi Seong-gye's father (cameo)

King Hyeonjo

Kim Chul-hee/Yang Mi-nam Kim Hyun-goon as young Chul-hee

Kang Tae-hwan

Baek Kyung

Lee Joon-hyuk (70s) Choi Jin-hyuk as Lee Joon-hyuk (29) Shin Dong-woo as teenage Lee Joon-hyuk

Noh Song

Na Sang-jin

Ahn Ho-shik

Ko Joo-man

Eun Kyu-tae

Kang Dae-hyun

Jang Byung-doo

Kim Jong-seo A brilliant general who serves as the Left State Councillor and King Munjong's most trusted advisor, he alienates Grand Prince Suyang when he accepts Princess Gyeonghye instead of Suyang's daughter as bride for his younger son. He pays the price of his misalliance with his life and the destruction of his family.

Park Dong-jae, Hae-young's grandfather and chairman of the Daehan Group

Chairman Kim Tae-jin He is a self-made tycoon who built his business empire from scratch, and a strong charismatic father with three sons and a daughter. The K group Enterprise's company president finds himself facing another challenge in life as his children fight to become his empire's successor, with the most aggressive person being Yoon Na-young — the wife of his third son — who will stop at nothing to push her husband and son to the top of his succession list.

Jung Gook

Eun-young's grandfather

Baek Sung-min (former President)

King Jinheung (ep 1)

Han Kyu-il (Young-min's grandfather)

Na Choong-bok (나충복)

Kim Gab-yong (Oboe)

King Yeongjo

The head of the Lee family, who works alongside his daughter-in-law at his Korean medicine hospital. He graduated Medical school and read Acupuncture and Moxibustion as specialties. The oldest in the family, he can be strict and aggressive toward his family members, and thinks only about himself. In flashback scene, He used to be Moon-hee's master Lee Tae-ri as young

Lee Byung-dal

President Go Duk-soo

Kim Hoon-jang

Hyuk-joon's grandfather

Moon Dae-cha (Young-ho's illegitimate biological father)

Park Joo-myung

Kang Doo-shik, Tae-woong's father

President Jang