닥터 이방인

Lee Jong-suk

Park Hoon

박해진

Han Jae-joon

진세연

Song Jae-hee / Han Seung-hee

강소라

Oh Soo-hyun

전국환

Oh Joon-gyu

이일화

Park Hoon's Mother

최정우

Moon Hyung-wook

김지영

Jeong-min

박해준

Cha Jin-soo

Jeong In-gi

Kim Tae-sool

윤보라

Lee Chang-yi

천호진

Jang Seok-joo

구승현

Young Park Hoon

김보미

Kim Ah-young

Kim Ji-eun

Yoon-gyu Secretary