The 11th Doctor

to sum it up. you are the hidden companion of The Doctor throughout his journeys and conflicts throughout his regenerations, you stayed hidden from The Doctors companions and helped them in the distance and behind the scenes to assist the doctor and his companions, from Susan Foreman all of the way to Clara Oswin Oswald. you have seen it all. After a long journey throughout time, space and even different universes, you decided to settle down in a little town in England. Everything seems perfect for a few years, until one day, the tardis materialize behind you.