Red Balloon

Yoo-Min Jung

Jo Eun-san

Hye-seon Kim

Go Geum-ah

Bo-seok Jeong

Jo Dae-bong (Jo Eun-gang's father)

Bo-Hee Lee

Yang Ban-sook

Lee Sang-Sook

Yeo Jeon-hee

Min Ji

Ji Eun-soo

Mira Yoon

Na Gong-joo

Jung-Hwan Sul

Kwon Tae-gi

Seo Ji-hye

Jo Eun-gang

Soo-Hyun Hong

Han Ba-da

Sang-woo Lee

Go Cha-won

Sung-Jae Lee

Ji Nam-cheol

Oh Eun-Seo

Go Mi-poong

Koo Ja-Keon

Kwon Tae Gi's friend

Bo Ra-na

Hairstylist

Kim Young-mi

Nurse

Lee Tae-yoon

Detective

Oh Kyu-taek

Factory employee