Okay so I totally think that Peter Capaldi looks like an older Arthur Darvill which works really well, because Rory the Roman and then he plays a Roman in this episode! It just works so well. Even though it's not actually a thing.
The Bad Wolf, The Girl Who Walked the Earth, The Most Important Woman, The Girl Who Waited, The Child of the TARDIS and The Impossible Girl by tomtrager - Doctor Who. Clara has marred the grouping of companions.