1. Shona (Last Christmas)
Okay, so Shona had screen time with Capaldi in the Christmas Special, and she is a completely new character, but it would've been unfair to leave her out. Whovians and critics alike were delighted with her performance in Last Christmas and many even said she stole the show. Her character does seem to gel well with Capaldi's Doctor and during an episode that some fans complained was boring and lacking, Shona really kept the comedic line going and brought it some of its most memorable moments. So could Whovians be seeing her again? At the end of the special she tired to organise a reunion so could that possibly be a hint? Nothing comes of it on screen but that by no means indicates that she won't be back again in the future. Only time (and space) will tell! Are there any other characters we haven't mentioned who you think should cross paths with the Twelfth Doctor? Let us know who and why in the comments section below.