Hong Sung-ho Director, Screenwriter MooHyun Jang Director YoungSik Uhm Director, Film Editing Chloë Grace Moretz Snow White Voice Sam Claflin Merlin Voice Gina Gershon Regina Voice Patrick Warburton Magic Mirror Voice Jim Rash Prince Average Voice Ava Kolker Wooden Bear Voice Katie DiCicco Dorothy Gale Voice Amanda Troop Walla Actor Nolan North Hans , Twin Guards , King White Voice Frederik Hamel Jack Voice Simon Kassianides Arthur Voice Hwang Su-jin Producer Kim Hyung-soon Producer, Executive Producer Belli Ramirez Producer Jung Myun-young Executive Producer Lee Jiyeon Executive Producer Jessica Rojas Ambinder Film Editing Stan Webb Film Editing Geoff Zanelli Original Music Jung Chi-yeol Art Director SeoKi Lee Art Director Matthew Jon Beck Casting Micah Dahlberg Casting