Director
Martial Arts Director
Screenwriter
Main Role
- Yoon Hyun Min Main Role
- Go Sung HeeHan So YeonMain Role
Support Role
- Choi Yeo JinGo Yoo Jin [Nan Do's sister]Support Role
- Hwang Chan SungBaek Chan Sung [Vice-president of Magic Mirror]Support Role
- Lee Jung Eun[So Yeon's mother]Support Role
- Kang Seung HyunYoo Ram [Stewardess / So Yeon's friend]Support Role
- Kim Yong Min[Assistant]Support Role
- Kim Soo Jin[Nan Do's mother]Support Role
- Son Jong HakNam Gi Ho [IT crimes Detective]Support Role
- Jung Young KiJo Jin Seok [Senior Programmer, GIO Labs]Support Role
- Jung Yeon JooJi Na [Detective]Support Role
- Nam Myung Ryul Support Role
- Jung Do WonMr. Jeong [Chan Sung's aide]Support Role
- Lee You MiJi Hye [Prism employee]Support Role
- Yang Dae HyukLee Dong Sik [Prism employee]Support Role
- Gong Min JungJeong Ah [Prism employee]Support Role
- Park Geon Gyu[GIO Labs staff]Support Role
Guest Role
- Lee Ki ChanYeon Kang Woo [So Yeon's boss] (Ep. 1–4)Guest Role
- Baek Jin Hee[Voice] (Ep. 6)Guest Role
- Ahn Hye Kyung(Ep. 6 [voice] & 10)Guest Role
- Min Chae Eun[Idol]Guest Role
- Yoon Dan Bi Guest Role
- Sung Min JunKo Nan Do (Child)Guest Role
- Mi Seok[minion after Go Yoo Jin] (Ep 1)Guest Role
- Ahn Se Ho[minion driver after Go Yoo Jin] (Ep 1)Guest Role
- Kim Ha YunHan So Yeon (Young)Guest Role
- Han Soo HoMr. Kim [GIO Labs Security] (Ep 5)Guest Role
- Moon Ju BinGo Yoo Jin (Young)Guest Role
- Eun Ye Jun[Ice skating boy] (Ep. 5)Guest Role
- Kim Hak Seon[Prism Marketing Director]Guest Role
- Kim Yoon HongFather Go [Nan Do and Yoo Jin's father] (Ep 12)Guest Role
- Kim Ik TaePolice Chief (Ep 10)Guest Role
- Park Seong Kyun[Go Nan Do's lawyer] (Ep. 6)Guest Role
- Choi Gyo Shik[Incheon International Airport Security] (Ep 11)Guest Role
- Ok Joo RiHolo [In disguise] (Ep. 4)Guest Role
- Park Seon Woo[Waiter] (Ep. 3)Guest Role
- Kim Bo YunEugeneGuest Role
- Park Jun Hyuk[Police Officer]Guest Role
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