와이 알 유?

이정민

as Jung Lee Won

이예환

as Kim Ji Oh

박창훈

as Ko Yu Gyeom

이상민

as Woo Sun Woo

전사라

as Kim Do Yeon

Jo So-young

as So Young

Dawon

as Da Won

Park Young-un

as [Yu Gyeom's Junior]

Kim Na-hyun

as [Professor]

Su Hyun

as Jung Lee Jin [Lee Won's Sister]

지종호

as Jong-ho