Over the last 62 years, the time-traveling Doctor has battled some incredible villains in Doctor Who, but these terrifying antagonists have only appeared in the long-running series once. While some of the Doctor’s most formidable enemies have recurring roles in Doctor Who, including the likes of the Daleks, the Cybermen, the Master, the Weeping Angels, […] The post 3 Incredible Doctor Who Villains Who Only Appeared Once appeared first on ComicBook.com .