Manhole

Jung Yu-mi

Yeon-seo

Kim Sae-ron

Soo-jung

Jung Kyung-ho

Soo-chul

Choi Deok-moon

Kim Jong-ho

Jo Dal-hwan

Pil-gyu

Lee Young-yoo

Kim Song-yi

Yoon Chan-young

Soo-chul (Young)

Kim Bin-woo

Female Victim

Yoon Don-seon

Policeman

Jun Yoon-ji

Bakery Part-time Worker

Kim Jae-hwa

Social Worker

Seo Kyung-hwa

Yeon-seo's Mother

Go Da Yun

Soo-chul's Older Sister

Shin Dong-ryeok

Soo-chul's Father

Seo Hyun-woo

Male Police Officer

Kim Mi-hui

Female Police Officer

Ha Ji-eun

Woman in Haengdang Area

Kim A-ram

Mummy