Choi Won-young

Eun-gyeol's father

Ha Young-doo, Korea's first serial arsonist.

King Yi Ho Choi Yoon-je as young Yi Ho

Hwang Hyeon-do

Lee Si-heum, Lee Pyo's uncle who is an ambitious and mysterious person.

Ahn Hyeon-seong

Elder Hwang Hee-tae

Kim Yoon-chul, (39 years old) Jae-kyung's husband, CEO of Cafe Old Crop.

Chief Gwi (aka Guibanjang) / Crown Prince Yi-Hon Song Geon-hee as young Crown Prince Yi-hon

Seok Oh-won

Lee Jae-joon

Hwang Seok-ju

Hwang Chi-young

Han Jae-young

Jang Pil-seong

Joo Hyun-gi

Sung Tae-pyung / Sung Joon

Lord Kim Ahn-ji

Cha Jae-gook

Kim Woo-chul Kang Tae-oh as young Woo-chul

Lee Joon-ho / Lee Joon-young Doh Kyung-soo as teen Lee Joon-young

Ahn Gook, Do-hyun's Secretary.

Kim Do-jin

King Haejong

Kim Chul-gyu

Yoon Jae-ho

The sommelier Yoo-jin likes (ep. 1)

Kang In-chul

Yoon Min-joon

Chae Ki-hoon

Lee Young-min

General Gyebaek

Nam Gyeong-woo (Na-young's boyfriend). He survived the accident they were in together.

Jang Young-min