W(더블유)

이종석

as Kang Cheol

한효주

as Oh Yeon-joo

정유진

as Yoon So-hee

Lee Tae-hwan

as Seo Do-yoon

이시언

as Park Soo-bong

박원상

as Han Cheol-ho

김의성

as Oh Sung-moo

강기영

as Kang Seok-beom

허정도

as Park Min-soo

차광수

as Son Hyun-suk

남기애

as Kil Soo-sun

류혜린

as Sun-mi

박충선

as Kang Chul's Father

김나운

as Kang Chul's Mother

이세랑

as Kil Soo-young

서신애

as Kang Chul's Younger Sister

Park Min-ha

as Young Oh Yeon-joo

양혜지

as Yun-hee

정지소

as Teenage Oh Yeon-joo

권혁민

as Team Leader Park

Jin Hyun-kwang

as Policeman