Eva De Ville was the most feared assassin in the Twelve Quadrants. She was hired by Colby via the CEO to assassinate the Thirteenth Doctor who could be tracked down to 2 June, 1953. However when she arrived she would soon realise there were various versions of the Doctor, who all needed rescuing from other alien threats. With the coronation of Queen Elizabeth II over, Eva lost hope in assassinating her, but was eventually able to locate her. She wasn't able to do anything before being attacked by the lizard Elizabeth II, so teleported back to where she started. The Doctor came crashing in after, and once defeating Colby was able to restrain Eva to send her to prison. (COMIC: Where's the Doctor?)
Behind the scenes
Eva's name appears to be a pun on "evil" and "devil".