4. Paul F. Tompkins
Who is Paul F. Tompkins, you ask? His name should be familiar to alternative comedy fans as a longtime stand up comedian and for his mainstay of various comedy podcasts, including Comedy Bang Bang and his own Paul F. Tompcast. As a result, he is perhaps best known for his smart sense of humour and various wacky impersonations, ranging from the Cake Boss to Sir Andrew Lloyd Weber to Gary Marshall. Just look at that picture. Doesn't he look like he could be a long-lost incarnation of the Doctor? Always impeccably dressed and never less than extremely witty, Tompkins could be an ideal companion to the Doctor who is in much need of someone intelligent to trade barbs with. As well as that, Paul could perhaps serve as a positive antidote to some of the Doctor's moodier moments. Let's face it, the Twelfth Doctor can be a bit of a pill at the best of times, so it would nice to have someone around who could make him crack a smile.