Koo Kyo-hwan

Shin Pa-rang

Lee Sang-hee

Choi Hyun

Cha Soo-yeon

Choi Soo-jin

Jung Young-ki

Hwang Seung-yeol

Jang Seo-kyung

Lee Seul-gi

Woo Ji-hyun

Kim Jung-bin

Lee Jun-young

Sung-hoon

Nam Myung-ryeol

Manager Android

Son Min-seok

Section Chief Android

Kim Seung-hoon

Team Leader Android

Lee Young-suk

Shin Pa-rang's father

Yoon Soon-shim

Shin Pa-rang's mother

Lee Jae-hui

Shin Pa-rang's landlady

Kim Hyun

Lee Seul-gi's mother

Kang Jin-ah

Teaching Assistant