Koo Kyo-hwan
— Shin Pa-rang
Lee Sang-hee
— Choi Hyun
차수연
— Choi Soo-jin
Jung Young-ki
— Hwang Seung-yeol
장서경
— Lee Seul-gi
Woo Ji-hyeon
— Kim Jung-bin
이준영
— Sung-hoon
남명렬
— Manager Android
손민석
— Section Chief Android
Kim Seung-hoon
— Team Leader Android
Lee Young-suk
— Shin Pa-rang's father
윤순심
— Shin Pa-rang's mother
Lee Jae-hui
— Shin Pa-rang's landlady
김현
— Lee Seul-gi's mother
강진아
— Teaching Assistant