This was originally an attempt to introduce a few other companions to the lineup, picked from the show....then I decided to make a Matt Smith Doctor Whooves....then a Christopher Eccleston one....then I decided Rory and Mickey really needed representation even though I couldn't match them to a show pony...
Finally wound up with this.
Roseluck, Doctor Whoof (10th), Nurse Tenderheart, Derpy, and Pinkamena are all from the show, and River Song is based on Surprise (Pinkie Pie's original concept, and Surprise's colors from a previous show) because she manages to surprise the Doctor all the time.
(ps: Derpy is Donna because I already did this: [link]
Ravie, Steelfish, Bendable
Doctor Who is (c)
On PB: [link]