Du-shim Ko

Yang Choon-ja

Soo-young Ryu

Cha Myeong-seok

Kim Yun-Seo

Kim Se-mi

Son Eun-seo

Cha Young-ah

Tae-young Ki

Kang Joon-soo

Kim Dasom

Oh In-Young (2015)

Bo-yeon Kim

Jang Mi-hee

Hee-Sung Kwak

Cha Dong-seok

Kim Sung Hwan

Cha Il Gu (Myeong Seok's father)

Yong-joo Lee

Oh Sang-sik

Ok-Dam Baek

Lee Ha-ji

Yoon Seo Kim

Kim Se-mi (2015)

Da-Sol Jeong

Heo Soon-Jung

Seung-Woo Lee

Cha San

Kyung Joon

Bae Yong-Joon

Daniel Joey Albright

Private Academy English Teacher Joe

Hye-in Jeon

Oh In-Young (young)

Alice

Girl group Ruby's member