Kim Min-ho

as Hippo

as Son Hyeong-min

as Bae Seong Gyu [Detective]

as Oh Bok-tae's Restaurant Employee (eps 2)

as Seo Yun-taek

as Bok-an

as Bang Cheol-jin

as Park Min-seok

as Kim Gi-chang

as Baek Jun-kyu

as Xiao Fang

as Baek Seok-Hee

as Jo Suk's friend

as Seon-Hee

as Park Min-seok

as Buldak