Self
Gwang-sik
Han Seung-woo
Hwang Woo-yeon
Tae-jin
Woo Soo-han
Seung-hyo
Han Yu-hyeon
Ki-joong
Lee Seul-woo
Han Tae-sung
Jo Young-jae
Seo Beom-jo
Kang Jin-gu
Han Jin-wook
Seong Yun-o
Lee Young-kwang
Jae-wook
Young-woong
Park Soochang (Yihyeon's childhood friend)
Jung Woo-sung
Mo Yi Ahn
Lee Hae Sung
Seo Do-young
Go Nangil
Kang Tae-Ho
Jang Do-Han
Moon-baek
Ki Yoo-Jin
Joon Moon
Do Min-Ik
Han Dong-jin
Himself
Lee Kyung