Well I for one am a big fan of Donna. This woman is just astounding. She is like the Doctor’s sister in a way. Considering how they would always fight, but, it would always be funny, and they would get along at certain times too. But I also like Donna because she is a companion who has no love interest towards the Doctor, she would just treat as she would any other person. She might be considered ordinary but the way how she was with the Doctor is entirely different. She went out in a depressing way, but that just means she was the best