Oh! My God— Full Cast

Choi Sung-kook

as Im Jungwhan

Shin Yi

as Eun-ju

Baek Il-seob

as Jung-Hwan's father

Park Won-sook

as Jung-Hwan's mom

Jo Sang-ki

as Chil-Goo

Park Jun-gyu

as Hwang Kye-Jang

Kim Soo-mi

as Nanny

Kim Bu-seon

as Ma Sung-Sook

Lee Won-jong

as Doo-Sik (cameo)

Shin Jung-keun

as Agari

Lee Eun-mi

as Unknown

Ju Seok-tae

as Unknown