Bae Doo-na

Ok Taek-seon

Kim Yoon-seok

Lee Gyun

장기하

Kim Yeon-woo

Son Seok-koo

Nam Su-pil

Moon Sung-keon

Professor Seong

Kim Hie-won

Director of Research Institute

Oh Hyun-kyung

Young-hee

민진웅

Jeong-hun

Yeom Hye-ran

Ms. Yeom

유순웅

Na Jeong-bae

이경진

Taek-seon's Mother

최형인

Gyun's Mother

Kim Ye-won

Ji-seon

Park Hee-bon

Yi-ju

곽민호

Manager Kim

Hong Seok-bin

Doctor 1

김경일

Doctor 2

Cha Si-won

Cop 1

카더가든

Cop 2

이남경

Young Taek-seon