There are characters who travel with Doctor Who
In the long-running BBC television science fiction programme Doctor Who and related works , the term `` companion '' refers to a character who travels with , or shares the adventures of the Doctor . Doctor Who . The programme depicts the adventures of a Time Lord called `` The Doctor '' , an extraterrestrial being from the planet Gallifrey . Accompanied by a number of companions , the Doctor combats a variety of foes , while working to save civilisations and help people in need .