Pluto

Sung Joon

Yoo-jin Taylor

David Lee

Kim Joon

Cho Seong-ha

Park

Kim Kkob-bi

Jeong Soo-jin

Kim Kwon

Han Myeong-ho

Seon Joo-ah

Kang Mi-ra

Nam Tae-boo

Choi Bo-ram

Park Hae-joon

Detective Choi

Ryu Kyung-soo

Park Jeong-jae

Park Hyun-young

Teacher Kim

Kil Hae-yeon

Joon's mother

Hwang Jeong-min

Myeong-ho's mother

Park Nam-hee

Jeong-jae's mother

Oh Jung-woo

Kang Chang-min

Kim Jae-rok

Principal

Kim Ho-yeon

Soo-jin's mother