With every new Doctor comes new companions. The actors and actresses change along with them as well the overall feel of the show. With all of this changing though, one thing thats has always stayed the same is the way The Doctor cares for his companions and everyone he meets during his traveling.
For the 9th Doctor he cares for his companion Rose the most out of anyone else on the show. Making sure she is okay and safe at all times, The Doctor watches her every move. From the very beginning as a viewer you can tell that The Doctor is a caring person. Grabbing Rose’s hand, someone who the doctor does not know at this time, in the first episode to save her from the plastic living manikins shows his caring personality. After traveling with The Doctor for some time, Rose begins to develop strong feelings for the Doctor and even more so when he regenerates into the 10th Doctor.
The Doctor’s true feelings towards Rose come out during Season one, episode 13 titled The Parting of Ways. In this season one finale, The Doctor faces up against an entire army of Daleks. In order to keep Rose safe, The Doctor makes the couragous decision to put her in the TARDIS and send her back home in present time. By doing this he risks his life for hers. As we all know at the end of this episode it is Rose that ends up saving the day ironically.
Another episode The Doctor shows how much he cares about Rose is in season 2 episode 14 titled Doomsday. In this episode The Doctor and Rose are fighting the Daleks again in a dramatic season finale. At one point there is a bridge that opens up in a wall connecting to some other universe. During the end of the episode this bridge begins to be strong and and sucks anything and everything around it into it including all of the Daleks. At this time The Doctor and Rose are holding on for their lives until suddenly Rose loses her grip and starts to be sucked into the bridge. When this happens, as viewers, you can see The Doctor in immediate panic as Rose creeps closer and closer to the wall. Seeing all the panic in his eyes at this moment in time shows how much The Doctor truly cares about Rose.
As a doctor you usually care for your patients and for The Doctor in Doctor Who there is no exception. The way he protects Rose in every episode making sure she is okay at all times is the way The Doctor is. He is that loving character that helps everyone and anyone that comes his way during his traveling.