Koo Kyung-yi
Song Yi-kyung / "K"
Director Yong
Na Je-hui
Santa
Oh Gyeong-su
An Geon-uk
Mr. Kim
Je-hui's father
Lee Dae-ho
Jung Jeong-yeon
Jang Seong-u
Heo Hyeon-tae
Heo Seong-tae
Kim Min-gyu
Yoon Jae-yeong
Ko Dam
Gardener
[Detective]
Escort (Eps 1, 2)
Yi-kyung's mother
Na Je-Hui's Colleague (Eps 8)
[Policeman]
