The Doctor (Doctor Who)

The Doctor is a canon character from the long running TV show Doctor Who

In Badfic
Despite all Doctors having quite distinct personallity characteristics and a unique sense of style, it is not always possible to tell from the story which Doctor the story is about. With one exception:

Classic Who
Doctors One through Eight have not much to suffer from Suethors. Doctor number Five however often features in slash stories with his companion Turlough, or three in a bed romps with his female companions Nyssa and Tegan.

New Who
The same cannot be said of Doctors Nine and Ten.

The Tenth
The pretty one -- if you go for the skin over bone type of guy -- is often paired with his companion Rose. Many fanbrats believe that she is his Twu Wuv. Easily forgetting, or perhaps not even knowing, that The Doctor has had many incarnations before RTD pumped new life into him, and consequently many companions. If they don't marry off the two of them and knock up Rose before the events of Doomsday, authors will either simply ignore these events, or come up with some plot hole riddled explanation of how he got Rose (who's either a mum or about to become one) from Parallel Earth. What ever the circumstances, however, Doctor-Rose ships often involve heavily Sueified canon characters.

There are also stories where The Doctor for some reason does not have a companion and meets a girl (in the ages of 13 through 16) that is in desparate need of being rescued. He helps her out and she becomes his companion.