I love the Doctor Donna's my absolute favorite companion.
This comic was inspired by a funny doodle somebody did that was like this only with Axel and Roxas from "Kingdom Hearts". I've long forgotten who that deviant was (I think she deactivated her account). I was trying to figure out what style I wanted to draw them both in, that's why each drawing looks so inconsistent.
EDIT: Colored version can be found here: [link]
Art by ME
10 and Donna belong to their respective owners