Park Ji-hu

Song Woo-yeon

Jo Joon-Young

Nam Gi-jeong

Choi Bo-Min

Goo Seon-ho

Park Yoo-na

Nam Geu-rin

Kang Hye-won

Ahn Ye-rim

Im Chul-soo

Brown Finger

Kim Hye-Eun

Seong-kyeong (Woo-yeon's mother)

Kim Seul-gi

Black Finger

Min-woo No

Jonathan

Lee Jin Hyuk

Khaki Finger

Kim Jin-Young

Yeom Se-ra

Ki Eun-Yoo

Song Woo-dol

Chae Soo-ha

Jo Mi-rae

Kwon So-Hyun

Pink Finger

Cha Woo-min

Byeon Tae-seon

Hyung Hoon Won

Heo Zero

Ham Sung-Min

Oh Dae-oh

Joo Suk-tae

Woo-yeon's Father