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The Companions are the supporting protagonists of the long-running TV show (and related multimedia franchise) Doctor Who.

They are a group of specific people chosen (either by fate or by the Doctor himself) to accompany the Doctor on his journeys through time and space.

In many ways, the Companions are the true heroes of the show. Very often, the Doctor finds himself unable to deal with the villains he faces (either because of being physically unable to, or because his pacifist leanings forbid it), leaving the Companions to defeat the villain and save the day.

Companions are often women. Male Companions are rare, but they do tend to exist (the most notable ones being Captain Jack Harkness, Rory Williams and Brigadier Lethbridge-Stewart). 

The first season makes it more evident that the Companions are the true protagonists of the show, and two spinoff shows in the Doctor Who franchise (Torchwood and The Sarah Jane Adventures). However, most of the time, the Companions share protagonism with the Doctor. 

The Companions serve as the moral support of the Doctor, and the ones who keep him calm and stable, with the Doctor becoming unhinged or depressed without a Companion.

Companions are often surrogates for the audience, with the audience learning more about the story and the universe through the eyes of the Companions.


  • The Doctor tells Amy in an extra scene that he needs companions to see the universe with ryes of wonder again; everything is just facts to him.
    • You see a star, you see something impressive. Me? It's a big ball of gas. I know how it began, and know how it ends. ....and I was probably there both times. But when you see it, I see it.
  • In the Classic Era, companions tended to get dropped off in different locations and eras rather than their homes (Susan, Leela, Romana, Nyssa, Turlough, Peri and Mel), with it rarely happening in the Revived Era (Rose, Amy, Rory, Nardole, Bill)
          Doctor Who - Current Titlecard.png'Heroes

The Doctor
Dr. Who | The Doctor (Scream of the Shalka) | Meta-Crisis Tenth Doctor | Fugitive Doctor

The Doctor's companions
Susan Foreman | Ian Chesterton | Barbara Wright | Vicki Pallister | Steven Taylor | Katarina | Sara Kingdom | Dodo Chaplet | Ben Jackson | Polly Wright | Jamie McCrimmon | Victoria Waterfield | Zoe Heriot | Liz Shaw | Jo Grant | Sarah Jane Smith | Harry Sullivan | Leela | K9 Mark I/K9 Mark II | Romana | Adric | Nyssa | Tegan Jovanka | Turlough | Kamelion | Peri Brown | Mel Bush | Ace | Grace Holloway | Chang Lee | Rose Tyler | Captain Jack Harkness | Mickey Smith | Martha Jones | Donna Noble | Amy Pond | River Song | Rory Williams | Clara Oswald | Nardole | Bill Potts | Graham O'Brien | Ryan Sinclair | Yasmin Khan | Dan Lewis
Prose companions
Bernice Summerfield | Roz Forrester | Chris Cwej | Sam Jones | Fitz Kreiner | Compassion | Miranda Dawkins | Anji Kapoor | Trix | Cinder
Comics companions
Sharon Davies | Angus Goodman | Frobisher | Izzy Sinclair | Kroton | Destrii | Josie Day | Tara Mishra | Majenta Price | Gabby Gonzalez | Cindy Wu | Alice Obiefune | John Jones | ARC | The Squire | The Sapling | Hattie Munroe
Audio companions
Oliver Harper | Ann Kelso | Finella Wibbsey | Thomas Brewster | Marc | Erimem | Evelyn Smythe | "Mila" | Jago & Litefoot | Flip Jackson | Constance Clarke | Raine Creevy | Hex | Sally Morgan | Lysandra Aristedes | Mags | Elizabeth Klein | Charley Pollard | C'rizz | Lucie Miller | Tamsin Drew | Molly O'Sullivan | Liv Chenka | Helen Sinclair | Bliss | Anya Kingdom | Mark Seven

Brigadier Lethbridge-Stewart | Sergeant Benton | Captain Mike Yates | Brigadier Bambera | Kate Stewart | Osgood | Josh Carter | Sam Bishop

Torchwood Institute
Captain Jack Harkness | Gwen Cooper | Ianto Jones | Owen Harper | Toshiko Sato | Rex Matheson | Esther Drummond | Mr Colchester

Bannerman Road Gang
Sarah Jane Smith | Luke Smith | Clyde Langer | Rani Chandra | K9 Mark IV | Sky Smith

Investigators of Infernal Incidents
Henry Gordon Jago | Litefoot | Ellie Higson | Sergeant Quick

Paternoster Gang
Madame Vastra | Jenny Flint | Strax

Coal Hill defenders
Charlie Smith | Ram Singh | April MacLean | Tanya Adeola | Andrea Quill | Matteusz Andrzejewski

Other Allies
Professor Travers | King Peladon | Alpha Centauri | White Guardian | Maxwell Edison | Sabalom Glitz | Bernice Summerfield | The Face of Boe | Jackie Tyler | Bad Wolf | Pete Tyler | Ood Sigma | Jenny | Hostess | Craig Owens | Sophie Brian Williams | Danny Pink | Rigsey | Grant Gordon | Grace O'Brien | Karvanista | Claire Brown | Vinder | Bel | Eustacius Jericho