The Companions

A long running tradition of Doctor Who is the companions. You can't have a Doctor whithout his companion! In Series One, the Ninth Doctor met Rose Tyler a 19 year old who was just looking for more adventure in her life. At the end of Series One the Doctor regenerated, but at the end of Series Two, the Tenth Doctor and Rose were separated in different parallell worlds. The following Christmas the Doctor met Donna Noble who fought the Racnoss, but Donna turned down the invitation to travel with The Doctor. Then he met Martha Jones who was a medical student, who traveled with the Doctor but left him at the end of Series 3. Donna returned in Series Four, after realising she made a huge mistake turning down the Doctor, and at the end of Series Four, all the companions re-united and battled (and eventually beat) Davros, the creator of The Daleks! Other companions include Astrid, Christina and Adelaide. Donna's grandad became the Doctor's new companion in The End of Time but only for a short while as the Doctor had to sacrfice himself to save Wilf, resulting in his regeneration.