황금 무지개

Uee

— Kim Baek-won / Jang Ha-bin

Kim You-jung

— Kim Baek-won (teenage)

Lee Chae-mi

— Kim Baek-won (child)

정일우

— Seo Do-young

오재무

— Seo Do-young (teenage)

차예련

— Kim Chun-won / Yoon Ha-bin

이재윤

— Kim Man-won

김상중

— Kim Han-joo

도지원

— Yoon Young-hye

Jo Min-ki

— Seo Jin-ki

안내상

— Chun Eok-jo

류담

— Chun Soo-pyo

이지훈

— Kim Yeol-Won

Kim Dae-ryung

— Jo Kang-doo

그리

— Chun Soo Pyo [Teen]

Kim Hye-eun

— Yang Se-ryun