The Impossible Heir

Choi Hee-jin

Kang Hui-Ju

Jang Hyuk-jin

Choo Hyeok-jin

Chang-Seok Ko

Chae Dong-wook

Han Sang-jin

Kang In-joo

Kim Young-joo

Yoon Hyang-mi (Hye-won's mother)

Lee Jae-wook

Han Tae-ho

Lee Joon-young

Kang In-ha

Hong Suzu

Na Hye-won

Byung Mo Choi

Han Tae-oh's father

Kwon Hyuk

Mo Gi-joon

Kang-ji Lee

Heo Byung-sung

Gong Yoo Rim

Ma Joo-yi

Jin Shi-Won

Team leader

Robin Deiana

Amico