Detective Agency: Ondal the Fool and Princess Pyeonggang

Kang Hyun-joong

as

Kang Hyun-joong

Han Geu-rim

as

Han Mi-so

Kwak Ji-eun

Kim Min-kyu-I

Park Min-hye

Jo Yeong-taek

as

Jang Joon-seok

Kim Na-jeong

as

Kim Jin-hee

Jin Geon-I

as

President Lee

Joo Yeon-seo

as

Lee So-yeon