Please keep in mind that, although the series is officially part of the Whoniverse, it encompasses many different timelines and continuities and adaptations of existing works from the Doctor Who Expanded Universe. Owing to Big Finish's sheer size and complexity, it also plays by the rules of the Doctor Who Expanded Universe: the TV series can at times contradict or overwrite the timelines described here, or adapt them for the televised continuity.
For a still-growing recap list of the audio dramas featuring these characters, feel free to look here.
For the other cast pages relating to Big Finish Doctor Who, see:
- Big Finish Doctor Who Doctors
- Big Finish Doctor Who Villains
- Bernice Summerfield
- Iris Wildthyme
The vast majority of the companions who showed up in the Doctor Who TV series have returned for the Big Finish audio adventures, played by the original actors (With the notable exception of Dodo Chaplet, who has not appeared at all, and Barbara Wright, Ben Jackson and Harry Sullivan, whose actors died before Big Finish started making these audios). Although they usually travel with the Doctor, some just appear together in Companion Chronicles for their own adventures, or in their own separate series. For general character tropes about these returning companions, see either the classic series companions page or the revival series companions page.
The companions listed here are sorted in chronological order, by their first time meeting the Doctor in the TV series.
Susan Campbell (First and Eighth Doctors)
Aside from appearing in plenty of Companion Chronicles with the First Doctor, Susan returns as a companion to the Eighth. She's had a busy 20-odd years since her grandfather left her with freedom fighter David Campbell. She raised a half-human son, Alex, and rose high in Earth's fledgling government. Later winds up helping the Earth adjust to the concept of working alongside aliens... and fighting Daleks. Again.
- Break the Cutie: A second Dalek invasion, just like the first... but far worse, losing her son to the Daleks in said invasion and her entire life is ruined in the span of two audio dramas. But despite all she's lost, Susan is more worried about her grandfather's mental state than herself.
- Cloning Blues: In the alternate timeline of "A Storm of Angels", it turns out that the Doctor has made a simulacrum of her to keep him company. When the two Susans meet, the proper Susan, who was still living on Gallifrey, becomes a Defector from Decadence as the two decide to switch places.
- Give Him a Normal Life: Susan doesn't give up her son, but she does pretend to be human for his sake.
- Jumped at the Call: Despite the Doctor attempting to stop her, when she gets a message that is basically her call up papers to go and take part in the Time War she decides to leave Earth and fight.
- Mama Bear: She's this to her son Alex.
- Reasonable Authority Figure: Both on planet Earth in its regular timeline, and in the alternate timeline of "Auld Mortality"/"A Storm of Angels", in which she becomes Lady President of Gallifrey.
- Shipper on Deck: The Companion Chronicle "Here There Be Monsters" opens with her talking about how she thinks that Ian and Barbara truly belong together.
- Uncertain Doom: As of this writing, the last appearance of Susan is in the short story "All Hands On Deck" where, after the deaths of everyone she loved on Earth, she decides to return to Gallifrey and join the War. All we know after that is that the Doctor seems pretty certain she's dead.
The TARDIS (All Doctors)
- A Form You Are Comfortable With: She projects herself as the Brigadier (and, sort of, as the Third Doctor).
- Armour-Piercing Question: Delivers one to the Doctor:And what is your idea of friendship, Doctor? Id really like to know.
- Arson, Murder, and Jaywalking: After a while, she gets just a bit fed up with the Doctor's emotional turmoils, his Chronic Hero Syndrome, the strays he brings home, and his terrible taste in music.
- Distressed Damsel: Most notably in "Wirrn Dawn" and "The Fires of Vulcan".
- Fate Worse than Death: Faces one in "Zagreus". She's not in the mood for it.
- The Jailer: Is forced to become the proverbial can for Sealed Evil in a Can Zagreus.
- Like an Old Married Couple: Mel notes that the TARDIS's symbiotic link with the Doctor is pretty much a marriage. (She's right, of course.)
- New Powers as the Plot Demands: On a few notable occasions, she grows new appendages just to save the Doctor's life.
- Not Herself: In "Zagreus", it turns out that Zagreus has merged with her.
- Patchwork Map: Her library contains an orchard, and her mountain range is a short walking distance from the kitchen.
- What the Hell, Hero?: Towards the Doctor, after he refuses to sacrifice his companion's life to save all of reality... but has no problem with sacrificing the TARDIS and himself to do exactly that. She calls him out on it, hard.
Having spent a long time travelling with the First Doctor, Ian has many, many stories to tell. Now much older, he fondly looks back on his adventures.
- Closest Thing We Got: "Sphere of Influence" sees an elderly Ian being called upon by Susan and the Time Lords to help them negotiate an alliance with the Sensorites to help in the Time War. Ian protests that he isn't a trained diplomat, but the Time Lords affirm that they are aware of his experiences with the Doctor that make him more qualified than many of their own people.
- Flash Back: His stories in general, since William Russell's voice wouldn't be able to pass for young Ian anymore.
- Relationship Upgrade: "The Rocketmen" chronicles the exact moment he fell in love with Barbara. Literally. Out of a World in the Sky at terminal velocity.
- The Slow Path: Averted in "The Revenants", when he and Barbara manage to reach the 1950s, but can't bring themselves to live out the years in quiet solitude until they'd reach their own timeframe again. They choose to go back to the TARDIS instead.
Katarina (First Doctor)
- Broken Pedestal: Learning the full details of the First Doctors role in the fall of Troy, Katarina acknowledges that he isnt a god, but still chooses to respect him as a friend.
- Heroic Sacrifice: In the end, Katarina faces her destined fate with dignity.
- The Nth Doctor: Portrayed in audio by a different actress but still intended to be the same Katarina.
- Spared by the Adaptation: A collision in the Time Vortex diverted the First Doctors TARDIS from Kembel, resulting in Katarina surviving past the date she was meant to die until the Second Doctor explains the truth and puts things back.
- You Can't Fight Fate: Katarina is still certain that she was meant to die despite the Doctor and Stevens assurances to the contrary.
Jamie McCrimmon (Second Doctor)
- Nice Job Breaking It, Hero!: Jamie nearly changes his own history in "The Glorious Revolution" by causing a dangerous temporal paradox, requiring complex assistance from a Time Lord visiting his future self to prevent the change becoming permanent.
- Something Only They Would Say: Tries to get the Sixth Doctor to do this during "Last of the Cybermen", not believing he's a future version of the Doctor he knows, but it doesn't happen (he still ends up believing the man, but for different reasons).
- You Can't Fight Fate: The Sixth Doctor tries warning him about what happens at the end of "The War Games" during "Last of the Cybermen", but to no avail.
Zoe Heriot (Second Doctor)
When Zoe parted from the Second Doctor, the Time Lords erased Zoe's memory of her adventures. But certain parties have evidence that she travelled in time, and have tracked her down in search of the information she doesn't know she knows.
- Catchphrase: "I remember everything — and I remember nothing."
- Friendless Background: Zoe had a troubled upbringing, and since she left the Doctor her troubled mental state has made it even harder to connect with people.
- Nice Job Fixing It, Villain!: When the Cybermen tried to turn Zoe into the new Cyber-Controller, she was able to use that control to trap the Cybermen in the Land of Fiction, and later summon the Sixth Doctor for help.
- Past Experience Nightmare: Has suffered from them for decades, due to repressed memories of her time with the Doctor.
- Stable Time Loop: Second Chances sees Zoe regain her memory of a trip to a particular space station in what was her home era's future just as the event is about to happen 'now'; she ends up ensuring the survival of her past self during the crisis while trying to save the station.
- Wetware CPU: During "Last of the Cybermen", she winds up being taken over by the Cyber-Controller as a suitable interface. She gets better, fortunately.
- Wistful Amnesia: She knows she's lost something, and it's damaged her ability to connect with people.
Josephine "Jo" Jones née Grant (Third and Eleventh Doctors)
Jo stars in many stories set during her time with the Third Doctor at UNIT, occasionally with Mike Yates along for the ride. Adventures taking place after "The Green Death" typically jump forward several decades to showcase the older Jo seen in "Death of the Doctor". Even in her later years, Jo continues to be quite an active adventurer, joining up with Iris Wildthyme for several adventures, teaming up with her old UNIT teammates Yates and Benton to help out Kate Stewart, and assisting Jack Harkness in the Torchwood story "The Green Life".
- Brief Accent Imitation: During "The Green Life", she attempts to imitate Jack Harkness's accent.
- Cerebus Retcon: Her meeting the Eleventh Doctor is put in a new light in UNIT: Tidal Wave and The Sacrifice of Jo Grant. While she by no means regrets meeting him, Jo actually found it very hard to look at him as he looked and acted nothing like the Third Doctor. Seeing him was pretty much confirmation that the man she loved was gone forever.
- Dirty Old Woman: She might be a happily married woman in her late 60s, but Jo is not beyond indulging in a healthy snog with Jack Harkness. Jack doesn't exactly complain, either.
- Have We Met Yet?: In "The Sacrifice of Jo Grant", Jo of 2020 is sent back to the 1970s and is incredulous when the Third Doctor of that era initially assumes she's her younger self.
- Heroic Sacrifice: 412 of them in "The Many Deaths of Jo Grant." Fortunately, it's All Just a Dream.
- Identical Stranger: Jo looks and sounds exactly like Iris. This is never acknowledged by anyone, Rule of Funny being in full effect.
- Killed Off for Real: In Masterful she makes the mistake of trusting Missy and this leads to her death when the Mistress gets tired of her. Thankfully this was an Alternate Timeline.
- Missed Him by That Much: During "The Elixir of Doom", Iris enforces this to make sure that Jo never directly interacts with the Eighth Doctor, fearing that Jo would jump at the first chance to leave her and travel with the Doctor again.
- Morality Pet: Jo acts as the best version of herself when she travels with Iris Wildthyme. Though hardly a villain, Iris indulges in Jo's more upright views, paying for clothes instead of shoplifting and not drinking quite so much while driving the bus. That said, Jo doesn't mind the parties and fun that Iris brings - she just doesn't want it to be all partying.
- Noodle Incident:
- Jo and the Third Doctor like to go out ballroom dancing on Saturday nights with Benton.
- When she joins up with the Eleventh Doctor in the Short Trip "The Infinite Today", the narration strongly implies that this is not her first meeting with him since "Death of the Doctor".
- Real Life Writes the Plot: Jo was the Third Doctor's longest-serving companion anyway, but the deaths of the actors who played Liz, Sarah Jane and the Brigadier mean that Jo is the de facto main companion of nearly all Third Doctor stories.
- Soapbox Sadie: Even when walking through an abandoned mine, she still feels the need to lecture Jack on wearing leather shoes, and using a gun on venomous maggots. Jack just shoots back that she's still got a gas guzzling car.
- Talking to Herself: In "Find and Replace", she meets up with Iris Wildthyme, later becoming her companion. Hilarity Ensues.
- What the Hell, Hero?: She chews out the Third Doctor, once she realises the Long Game he's been playing to replace her memories in order to protect her.
- Young and in Charge: In "The Havoc of Empires", Jo successfully impersonates a chief security officer by way of a Bavarian Fire Drill, with the Doctor and Mike Yates as her subordinates. At this point in her life she would have been 23 at most, yet nobody bats an eye at her Improbable Age.
Captain Mike Yates (Third Doctor)
Mike appears in a few Companion Chronicles, the third instalment of "Destiny of the Doctor", the second half of "The Worlds of Doctor Who" and in "The Third Doctor Adventures". Though he was previously part of non-Big Finish Doctor Who audio episodes by BBC Audio, they were given a mention in "The Worlds of Doctor Who", which is part of Big Finish canon after Big Finish acquired BBC Audio's properties.
- The Atoner: He has come to regret his betrayal of UNIT, and has not only managed to work his way back into their trust but helps Ruth Matheson and Charlie Sato into good standing as well.
- Canon Welding: Initially, Yates had a significantly greater presence in non-Big Finish Doctor Who audio episodes, accompanying Tom Baker's Fourth Doctor (and housekeeper Mrs Wibbesey) in the "Hornets' Nest", "Demon Quest" and "Serpent Crest" trilogy by Paul Magrs. Mrs Wibbesey was then given mention in "The Screaming Skull" during a probe of Mike Yates's mind, keeping Magrs's series in continuity with Big Finish.
- Easily Forgiven: Zigzagged; he had to work long and hard to get back into his position at UNIT, what with the business with the dinosaurs and all. The Sixth Doctor, though a bit disappointed to be meeting Mike in the ruins of his old laboratory, doesn't seem to hold the past against him.
- Naïve Newcomer: "Vengeance of the Stones" is the story of how he met the Doctor, stopped an alien invasion and joined UNIT ("Foreshadowing" features a similar event, except that on that occasion it was the Eighth Doctor subtly prompting Mike on the path that would lead him to UNIT).
- Rank Up: He starts off his introduction story as a Lieutenant and we find out how he came to be promoted to Captain, then transferred to UNIT. In a meta sense, he is also occasionally bumped up to Companion status in a way he never was in the TV series, going on several adventures in the TARDIS with the Doctor and Jo.
- Took a Level in Kindness: The experiences since his betrayal has led him to shed his Jerkass tendencies, leading to him becoming a better man and soldier.
Professor George Litefoot (Fourth (guest) and Sixth Doctors)
The pathologist from "The Talons of Weng-Chiang" got his own Companion Chronicle together with Jago, followed by many seasons of their own spinoff, which end up also starring Leela. They also encounter the Doctor again on occasion.
- Ambiguously Gay: Very gently hinted that he might be gay, in addition to him being a strong advocate for equal social rights in regards to the love that dare not speak its name.
- Heterosexual Life-Partners: With Jago, although Litefoot gets a brief and very sweet hint of being Ambiguously Gay.
- Quintessential British Gentleman: Litefoot is a polite, upper-middle-class professional gentleman, contrasted with Jago's slightly disreputable membership of the theatrical demi-monde.
- Military Brat: His father was a military attaché in China in the 1860s, so George grew up in Beijing.
- Red Oni, Blue Oni: The calm blue to Jago's boisterous and fearful red.
- Science Hero: A man of science from the Victorian era. He's not bad with the supernatural either, such as the time that the barmaid Ellie became a vampire.
Henry Gordon Jago (Fourth (guest) and Sixth Doctors)
The impresario from "The Talons of Weng-Chiang" got his own Companion Chronicle together with Professor Litefoot, followed by many seasons of their own spinoff, which end up also starring Leela. They also encounter the Doctor again on occasion.
- Cowardly Lion: He acts the Stout English Yeoman, but actually scares easily. Nonetheless he's capable of great bravery when roused, such as when his friends are in danger.
- Drowning My Sorrows: There's nothing like a steak and kidney pie and a few pints of ale down the pub when he's feeling down, as he often does, being the kind to feel sorry for himself when life turns against him.
- Large Ham: One does not work in the theatre without being bombastic as can be.
- Heterosexual Life-Partners: With Litefoot (although as mentioned, in Litefoot's case, the "heterosexual" is open to interpretation).
- Manly Tears: Unlike Litefoot, who sees death every day, Jago does not cope well with people dying during their adventures, and often cries. Though it may be less "manly tears" than "inelegant blubbing".
- Quintessential British Gentleman: Like Litefoot, Jago can be quite the gentleman, although perhaps a bit more brusque. Socially, though, he'd be considered somewhat less of a gentleman, being a theatre impresario of a slightly disreputable establishment. (He'd prefer if you didn't say "burlesque".)
- Red Oni, Blue Oni: The expansive, boisterous red to George's calm blue.
- The Scully: Usually he's The Mulder to the more skeptical Litefoot, but when they go up against a sinister spiritual medium, he becomes the skeptic, since he's used to working with magicians and knows how all the tricks work. (Of course, he's wrong, and she really is talking to spirits, of a kind.)
- Stable Time Loop: While travelling with Six, he ends up teaching the Venusians the tune of "God Rest Ye, Merry Gentlemen", which explains how the Third Doctor would later call the tune a "Venusian lullaby".
- These Hands Have Killed: After the first time he has to murder a sapient monster, he feels guilt-ridden.
Adric (Fourth and Fifth Doctors)
Matthew Waterhouse initially refused to return for Big Finish, so for a re-interpretation of the character post-"Earthshock", a much older Adric was played by Andrew Sachs in 2008. Waterhouse eventually agreed to join the cast in 2014, and many stories with Adric set during his TARDIS travels with the Fifth Doctor, as well as a few with the Fourth, have been produced since then. These adventures make an attempt at fleshing out his character more than the TV stories ever did, going some way to explain why he behaves as he does, confronting him with that behavior and generally softening him out a little, making him a much more bearable character this time around, though he never quite loses his arrogant streak. Greater focus is put onto his Odd Friendship with Nyssa and the mentor-student relationship he had with the Doctor, as well as showcasing the kind of person he might have turned out to be in an alternate timeline during the Short Trip story "A Full Life".
- Actor-Shared Background: Matthew Waterhouse is gay and an alternate, older Adric ends up in a relationship with another man, Reebac.
- A God Am I: God-king of the prehistoric bug people.
- Alternate Timeline: Two are shown where he has relevance. One, where the Doctor and Romana died in E-Space, stranding him and allowing him to grow old, and another where he was sent after "Earthshock".
- Author's Saving Throw: In a more general sense. Big Finish attempts to make the most of the potential of Adric's character, which was not always on full display on television. The audio stories show that he can be useful, intelligent and passionate, though not to the extent of Character Shilling and deftly enough to avoid changing his character completely.
- Back for the Dead: He spends his final moments helping Thomas Brewster.
- Boy Meets Ghoul: In "A Full Life", Adric meets and marries Asun, who had previously drowned and been brought back to life by her grandfather. A fairly mild case, as even though Asun is technically undead, she was brought back exactly as she was when she was alive, with no side effects.
- Deadpan Snarker: Unlike in the television stories where Tegan invariably won their many arguments, the audio series allows him to get a few licks in.Adric: We brought this on ourselves. We should have been more careful, exercised better mental self-discipline.Tegan: What? How were we supposed to know that something would be reading our minds?Adric: I'm just saying, that's all.Tegan: Well, don't. As my Aunt Vanessa used to say, if you can't think of anything useful to say, keep your mouth shut.Adric: Say that to you a lot, did she?
- Distressed Dude: In the Eighth Doctor story "Companion Piece", Adric is one of many companions abducted out of his timeline by the Nine and kept prisoner.
- Dreaming of Things to Come: During "A Full Life". In a situation similar to "Turn Left", Romana and the Doctor's deaths mean that all the disasters they went on to avert still come to pass. Adric begins dreaming about the Master and the entropy wave which, without the Doctor's intervention, would have consumed the entire universe, and he knows he has to stop it.
- Forgotten Fallen Friend: Averted, more so than on television, where his death was mourned for a full 90 seconds. His fellow companions talk about him every once in a while after he dies, and the Seventh Doctor still cares enough to tell his new companion Chris all about Adric, many decades (or centuries) after Adric died.
- Healing Factor: Adric's accelerated ability to heal plays a part in several stories, as he feigns injury to lull enemies into a false sense of security before he can escape, and is able to survive infection with a spore that basically killed everyone else exposed to it.
- Heroic Sacrifice: In "A Full Life", he sacrifices the life he grew old in so that he can prevent the Doctor and Romana dying on Veridis. This doesn't actually kill him, but it does erase the timeline he came from, and directly ensures that the events we already know lead to his death in the normal timeline come to pass.
- My Greatest Failure: His death is often implied to be this for the Doctor. When Adric meets the Seventh Doctor in "Cold Fusion", the manipulative and calculating Doctor is quite subdued upon seeing him again, and spends some time emphasizing the fact that as much as he might wish to change the past, he simply can't, without ever giving away to Adric what he's talking about.
- Obfuscating Disability: Adric gets shot in the leg during "Iterations of I", and is kidnapped by his attacker. His Alzarian healing powers help him recover from the wound extremely quickly, but he pretends to still be hobbled for a while to trick the bad guy and eventually escape.
- Only Mostly Dead: Turns out he survived the end of "Earthshock".
- Stalker with a Crush: Spending decades of his life on prehistoric Earth, without any humanoid women around, led him to become a bit... preoccupied with the memory of Nyssa.
- This Looks Like a Job for Aquaman: His mathematical brilliance, almost an Informed Attribute in the classic series, helps to save the day in "Iterations of I". In the same story, he also gets to show off his oft-forgotten Healing Factor.
- What Could Have Been: "A Full Life" explores a timeline where he... had a full life, enough to grow old, get married and have children and a grandchild.
Nyssa of Traken (Fifth Doctor)
For the first ten years or so, Nyssa was the most prolific companion of the Big Finish line. Due to Mark Strickson's infrequent availability and Janet Fielding and Matthew Waterhouse initially refusing to take part, she became Five's de facto main companion for a long time, receiving massive amounts of Character Development never afforded by the TV series. Since the involvement of the other actors became more regular, Nyssa stories can be divided into four categories: she has many, many adventures travelling solo with the Doctor that are set between "Time-Flight" and "Arc of Infinity", as well as adventures with Tegan along for the ride once she rejoined after the latter story. There are also stories set early in her travels with Tegan and Adric (before "Earthshock", obviously). Finally, she would also encounter the Doctor and her friends again 50 years after she left the TARDIS in "Terminus" — despite it being only two days later for them. Luckily, as she's not human, this isn't as much of a problem as it could be, and she has many further adventures with the Doctor, Tegan and Turlough.
- Action Mom: She ends up settling down and having two children, while still going out on medical research and rescue missions. The action ramps up even more once she comes back on board the TARDIS.
- Angst Aversion: Finally averted. The series notoriously neglected to ever examine the fact that the Master wiped out Nyssa's entire people and stole her dad's body to do it. In her audio appearances, Nyssa actually gets to confront her loss.
- The Bus Came Back: She rejoins Five, Tegan, and Turlough 50 years later (for her) and two days after the events of "Enlightenment" (for them).
- Burn the Witch!: As one of few people to ever leave their Arcadia, Nyssa falls under suspicion by the old world Trakenites who believe she's tainted by their version of the devil. Not that she was that safe on Earth: In "Winter For the Adept", the headmistress of Tremayne Academy is insistent that Nyssa is a succubus. In "The Land of the Dead", she picks up a psychic impression from still-living dinosaur skeletons in Alaska; the superstitious dig team mistakes it for a genuine premonition, and Nyssa is tied up and offered to the "spirits" as sacrifice.
- She's also subjected to the ducking stool in "Ghost Walk".
- Calling Me a Logarithm: In "Winter For the Adept", she has this reaction to the Tremayne headmistress labelling her a "harlot". "Whore of Babylon" draws yet another blank.
- Can't Stay Normal: Defied in Nyssa's case. She considers pursuing a simple life with Andrew, the boy she met in Stockbridge. Torn between her responsibilities as a scientist and the anxieties of a linear existence, Nyssa decides she can't cope and leaves in the TARDIS. However, "Circular Time" reveals that she does eventually marry a professor named Lasarti, with whom she has two daughters and a son.
- Character Aged with the Actor: Nyssa's Plot-Relevant Age-Up allowed Sarah Sutton to play a Nyssa who was much closer to her own adult voice rather than that of her teenage self. This only lasted until "The Emerald Tiger", when she was infused with rejuvenation energy and physically de-aged to her younger self.
- Character Focus: "Circular Time" is a sweet, almost dreamy character study of Nyssa.
- Dead Guy Junior: Her youngest son is named Adric Traken, after her friend and planet both.
- Died in Your Arms Tonight: In Tegan's, during "The Darkening Eye". (She gets better.)
- Exposed to the Elements: Nyssa gets a rude awakening one night when the Doctor's teleport experiment sends her somersaulting down the Swiss Alps in her nightgown. She didn't see the humour in it.
- Finishing Each Other's Sentences: With the Doctor, frequently.
- Germanic Depressives: Like all Trakenites, she tends toward humourlessness, blank expressions, and Pop-Culture Isolation. Stuck in Hamburg without the TARDIS translating for her in "Fanfare For the Common Men", she begins to grow fond of the German language.
- The Heart: Nyssa has always been one of the most kind and caring of all companions, but her status as The Heart is never clearer than when travelling alongside Tegan and Turlough.
- How Unscientific!: Alien activity Nyssa can accept. Telekinesis and energy waveforms, for that matter. But ghosts in "Winter For the Adept"? Sorry, there's just no scientific basis for that.Nyssa: I can't believe you're saying he's a ghost!
Doctor: He isn't! He's a floating cloud of energy which has the power to focus itself and move physical objects, often with dramatic results!
- Hugh Mann: Nyssa never gets the hang of the whole 'incognito' thing. In "Spare Parts", Sisterman Constant radios in to report her as suspicious and out after curfew, and lists her "possibly bogus" alias as Nyssa O'Traken. Similarly, when Nyssa tells Andrew Harper in "Circular Time" that she is from Traken, he assumes from her hair that it's in Ireland.
- I Choose to Stay: Fifty years after pulling one of these in "Terminus", Nyssa makes the sacrifice of leaving the TARDIS crew to stay behind in E-Space, meaning she'll never see them or her own family again.
- Ill Girl: For brief periods in "Primeval", "The Land of the Dead", "1001 Nights", "Aquitaine", "The Heroes of Sontar"... Nyssa is afflicted or infected with something on a disturbingly regular basis.
- Innocent Fanservice Girl: Very reluctantly so in "Primeval". The Doctor eventually caves in and lends her his coat to cover up with.
- Killer Rabbit: "Spare Parts" reveals that the Cybermats originated as toys/pets for children on Mondas, since animals couldn't survive in the cavern environment. Nyssa mistakenly brings one home to the TARDIS, causing it to leech off the ship's engines. When Five finds out, his meltdown makes the Sixth Doctor look positively staid by comparison.
- Letting Her Hair Down: In "Circular Time", she briefly tries a simple human life, even wearing jeans. The Doctor gently encourages her to explore it.
- A Little Something We Call "Rock and Roll": In "Primeval", Nyssa teaches a bemused Trakenite how to dance the Charleston to the accompaniment of Atari music (It's the best their computers can manage, as there're no music recordings on Traken).
- Older Than They Look:
- Thanks to the introduction of Trakenites' slowed aging, Nyssa is able to spend several in-universe years travelling solo with The Doctor after "Time-Flight" while still justifying Sarah Sutton looking exactly the same come "Arc of Infinity".
- After rejoining the TARDIS crew in "Cobwebs" after 50 years away, she is in her seventies but looks a couple of decades younger than that. This is taken to extremes in "The Emerald Tiger" when she goes through a rejuvenation process that reverts her to looking like she's in her 20s.
- Poison-and-Cure Gambit: Shortly after leaving home in "Logopolis", she unknowingly became a puppet for Kwundaar, one of the Old Ones who ran the universe back in the Dark Times. When Nyssa falls ill, the Doctor thinks it's because she has no built-in immunities (since Trakenites have long since eliminated disease), when it's actually a ploy to lure them there.
- Poke in the Third Eye: Nyssa's latent telepathic abilities make her a prime target for psychic beings and phenomena, sometimes resulting in prophetic dreams or being knocked unconscious. In fact, looked at chronologically, Nyssa experiences various pokes over three stories in a rownote .
- Real Life Writes the Plot: Due to Sarah Sutton being the only Fifth Doctor companion (apart from Nicola Bryant) being readily available to Big Finish for a long timenote — as well as Author Appeal from Peter Davison, a longtime Nyssa fanboy — Nyssa's character was expanded as a matter of utility.
- Sacred First Kiss: She has her first kiss with an English boy in Stockbridge. The moment shocks her — all her life, she'd imagined it as a logical thing, something that might happen and that she would have to deal with as part of a larger process, but the moment comes and goes very quickly and naturally. She gives the relationship a go, but soon realises that she has a lot to learn and she hasn't found the right person yet.
- Science Hero: Can keep up with the Doctor, and does much autonomous research while he's busy with other plotlines. He even trusts her to repair the TARDIS all by herself at times, and she tells him outright that she is twice the biochemist he is. The Doctor doesn't disagree.
- The Spock: She does show a flicker of dry wit whenever the Doctor's plans go tits up on him again, but Earth humor mostly goes over her head.Nyssa: I am not a princess.
Korky: Aye, but yer close 'nough that you couldn't tell that was a joke.
- Tastes Like Diabetes: Talked about in "Circular Time" Nyssa takes advantage of her and the Doctor's downtime to write a memoir (framed as a fantasy book) about her home before it was destroyed. Playfully, Andrew needles her about the tedious blissfulness of Traken and lack of any meaningful antagonist. Nyssa confesses that, once the true villain enters her story, the book will end—and she will no longer be able to entertain the fantasy that her world exists somewhere.
- Technical Pacifist: In "Spare Parts", Nyssa becomes trapped in the TARDIS as it's being swarmed by Cybermats. Finally, she has enough and electrifies the outer hull, which she describes as "worryingly satisfying."
- Trapped in Another World: Her (presumably) final fate, having chosen to stay behind in E-Space.
- You Can't Go Home Again: Well, the Doctor does take her back to Traken... a few thousand years into her past, before her people exchanged fanaticism for science. The Trakenites are as litigious as ever, though, severely testing the Doctor's temper as he's forced to jump through bureaucratic hoops to prove they're not heretics.
Tegan Jovanka (Fifth Doctor)
Janet Fielding agreed to do one, and exactly one, audio for Big Finish, set after her travels with the Doctor. However, she enjoyed the experience enough to come on board properly in 2010, and Tegan now travels rather regularly with the Fifth Doctor and his other companions in tales taking place during their time on the show together, both in the monthly range as well as in the Lost Stories. Her return had the benefit of expanding the types of Fifth Doctor stories that Big Finish could make as well as the time period in which they were set, as Tegan travelled with the Fifth Doctor for longer (at least on screen) than any of his other companions, and her absence meant that a lot of stories with either Nyssa or Turlough had to be squeezed into ambiguous gaps between certain episodes to justify Tegan not being there. In Big Finish stories, Tegan is just as brash and blunt as ever, but the audios give her a bit more Character Development and focus on personal issues that the TV series simply ignored, as well as putting a greater emphasis on her humor.
- Angst? What Angst?: Averted in comparison to the TV stories. "Psychodrome", set directly after the events of "Castrovalva", has her properly acknowledge that her Aunt Vanessa was killed by the Master in "Logopolis", and take a bit of time to try and cope with it. She and Nyssa bond over this, and also touch on Nyssa's people being wiped out, which was similarly brushed under the rug on TV.
- "Ass" in Ambassador: Tegan is appointed as Gallifrey's Ambassador to Earth, so she likes to introduce herself by her title to other Time Lords for no other reason than to annoy them.
- Belated Backstory:
- "Hexagora" introduces Mike Bretherton, Tegan's high school boyfriend from Brisbane.
- "The Waters of Amsterdam" reveals that she had a boyfriend during the year she spent between TARDIS travels after "Time-Flight". He wasn't human, though she didn't know that at first.
- Call-Forward: "Cold Fusion" has her putting on the fur coat she would later wear throughout The Five Doctors.
- Crazy-Prepared: When a robot bouncer asks to see some identification during "Cold Fusion", set very early on during her TARDIS travels, Nyssa is surprised that Tegan just happened to have brought her passport with her from the TARDIS. Tegan apparently walks around with everything she might need to jump ship to Heathrow and begin working as an air stewardess at any given moment, even during situations where that is incredibly unlikely to happen.
- Deadpan Snarker: Actually amplified in some episodes compared to the old days in The '80s.
- Demonic Possession: Since Tegan's back, so is the Mara, during the episode "Cradle of the Snake". It's just as traumatic for her the third time around.
- Doom Magnet: Even when she's not travelling in the TARDIS, Tegan seems to attract (or be drawn to) alien menaces wherever she goes. Her high school boyfriend is body-swapped with a giant insect, her more recent boyfriend is a robot using her because she travelled in time and even decades after leaving The Doctor she manages to get caught up in a Cybermen plot. Her Jade-Coloured Glasses as detailed below are not exactly unjustified.
- Emergency Impersonation: In "The Lady of Mercia", she manages to pose as a 10th century warrior queen by virtue of being scary and loud. She passes herself (and Adric) off as dangerous mercenaries in "Kingdom of Lies" for much the same reasons.
- Genre Savvy: She has been through enough madcap adventures and near-death experiences to recognize the typical hallmarks of a Doctor Who story about to kick off.Nyssa: The Doctor has been gone a long time. Do you think we should go after him?Tegan: Oh, no, no, no. I know how this story ends. The Doctor tells us to stay put, we wander off, we get captured, lots of people are shot and it all ends badly. I'm sorry Nyssa, but no.
- Jade-Coloured Glasses: Even as a young woman Tegan was never the most positive or optimistic person, but the older Tegan from "The Gathering" has become deeply disillusioned with life back on Earth, especially after ending up in a career and an environment that wouldn't be particularly fulfilling to anyone, much less somebody who's seen the wonders of the universe.
- The Lad-ette: Emphasized during "The Gathering". Now in her mid-forties, Tegan is much more prone to harsh language, doesn't hesitate to order a strong drink at any bar she happens across, and when a friend tries to cover for her work absences by inventing a story about the two of them going shopping together, absolutely nobody believes that Tegan would take time out of her day to go to the mall.
- Lame Pun Reaction: She just can't let a terrible pun go by, not even in life and death situations.Tegan: Electronic life? What are we talking about, here, digital insects? Computerized birds?The Doctor: Fish in chips?Tegan: All right, get out.
- Limited Wardrobe: Her season 20 white-corset-and-shorts ensemble is explained in "The Elite" when she comes back on board the TARDIS after "Arc of Infinity": The Doctor put all her belongings into storage during her time away and he can't remember where he put them. Tegan moans that she'll have to wear the same outfit for weeks.
- New Old Flame: Tegan gets two: high school boyfriend Mike in "Hexagora", and recent ex Kyle in "The Waters of Amsterdam".
- The Nicknamer: Usually with a Shout-Out. Robots get called "Metal Mickey" or "Tik-Tok", Sontarans get "Napoleon", giant tigers get "Pussy Galore"...
- Odd Friendship: With Cicero, who appreciates her straightforward nature even though her casual ribbing of him pokes holes in his stuffy demeanor.
- Open Mouth, Insert Foot: As always, Tegan's mouth is just as likely to get her in trouble as any alien or monster she comes across.
- Only Sane Man: Despite her reputation, the audio stories progressively show this aspect of Tegan as time goes on, tying into the Doctor's assessment of her as a 'coordinator' during "Castrovavla". She manages to keep her head when the more typically even-keeled Doctor and Nyssa go a bit off the rails during "The Children of Seth", she is the only one in "The Butcher of Brisbane" not so caught up in alien attacks and political intrigue that she can't think about the innocent lives on the line, and in "Conversion", when the Doctor is at his most unhinged facing off against the Cybermen that killed Adric, it's she who stops him from doing something truly dangerous.
- Phrase Catcher: When Tegan inevitably puts her foot in it, the Doctor will try to quiet her with a strained "yes, thank you, Tegan". It rarely works.
- Pop-Cultured Badass: On audio, Tegan is much more prone to slinging around "modern" references, usually as part of her role as The Nicknamer. Since she is the only human on board the TARDIS and they rarely travel to her own time period, her references usually go over everyone's heads.
- Precision F-Strike: In "The Gathering", she calls Jodi a 'bitch'. It's not unjustified, given the circumstances, but coming from a character last seen during the decidedly G-rated television stories, it's quite shocking.
- Sarcastic Devotee: She wouldn't be Tegan, otherwise.
- The Knights Who Say "Squee!": When meeting Harry Houdini.
- Taking the Veil: An amateur-built time machine simultaneously sends Tegan back to 918 A.D. and replaces her with Æthelfrid of Mercia. Worryingly, the real Æthelfrid is due to fight a decisive (and doomed) battle with the Danes that same morning. At the end, the Doctor manages to safely deposit Æthelfrid at a convent, where she will vanish into the mists of history. Before he returns in the TARDIS, though, Tegan is stuck pottering around the convent for a week, and she is not happy about it.
- Too Spicy for Yog-Sothoth: Tegan manages to terrify the psychic rats in "Rat Trap" into leaving her alone by overloading their minds with her disturbingly vivid memories of The Mara. Rats really don't like snakes.
- Touched by Vorlons: Theorized in-universe, but not outright confirmed. In "The Lady of Mercia" she has a psychic vision of a tenth century battle when she looks at a sword used in that fight. Since nobody else experiences anything like this when around the sword, the Doctor wonders if she might have picked up some kind of time sensitivity during her travels with him.
- It's also implied to be a Blessed with Suck case in "The Gathering", when Tegan learns that her brain tumor was also picked up at some point during her time on the TARDIS, making its origin something unidentified, but definitely alien.
- You Will Be Beethoven: "The Lady of Mercia" has her spending some time impersonating a historical warrior queen. All she really has to do is put on the outfit and shout a bit to have the locals convinced.
Vislor Turlough (Fifth Doctor)
Travelling with the Fifth Doctor, Turlough is typically not in the mood to deal with humans, with Earth, or with having to play the hero sometimes. Big Finish stories with Turlough tend to emphasize his Lovable Coward tendencies, while also framing him as a bit of a Pragmatic Hero and a deeply snarky Only Sane Man. His past on his home planet of Trion gets touched upon, as well as the lingering guilt he feels for having tried to kill the Doctor under the Black Guardian's influence. Turlough has several solo outings with the Doctor set before his departure in "Planet of Fire", as well as multiple adventures with Tegan and Nyssa, the latter of whom rejoins the TARDIS crew after leaving in "Terminus".
- Belated Backstory: "Kiss of Death" explains more in detail about Turlough's past, and why he never changes out of his Limited Wardrobe. 30 years after he was last on TV.
- The majority of his adventures take place on Earth, his absolute least favourite planet in the galaxy. He keeps begging the Doctor to go for a holiday on the planet of warm beaches and cute girls. The Doctor ignores him.
- In "Trap For Fools", out of all the possible places in all of space and time, the TARDIS arrives at an alien school in the far future that models itself on old-fashioned English public schools, like Brendon. The Doctor cheerfully deploys Turlough to go undercover and be a boarding school student again, his worst nightmare.
- Deadpan Snarker:Fifth Doctor: Where is your sense of adventure?
Turlough: In my room in the TARDIS, in a box marked "sense of adventure".
- Enemy Without: In "Loups-Garoux", a group of werewolves hypnotizes him into seeing a visual manifestation of his dark side. It really scares him.
- Fish out of Water: The Doctor tries to show him all the best parts of Earth and to teach him cricket. It doesn't take, mostly because Turlough looks down on Earth so much that he prefers to be a fish out of water.
- Genre Savvy: He has an uncanny sense for impending adventure, though, being a Lovable Coward, he mostly uses these instincts to try and remove himself and the others before they get sucked in. It never works.
- Lovable Coward: His first action when faced with danger tends to be to run to the nearest place of safety or even re-enter the TARDIS, to both the amusement and annoyance of the rest of the TARDIS crew.
- New Old Flame: Meets up with an old girlfriend of his in "Kiss of Death". Subverted when she's actually working with the bad guys of the story, and dies in his arms when she rejects them.
- Not So Different: With a Sontaran warrior in "Heroes of Sontar".
- Not What It Looks Like: In "The Lady of Mercia", the Doctor and Turlough bear witness to some illicit affairs going on in the University of Frodsham physics department: a lively couple is shagging their students and faculty both. A jealous preppie barges into the lab and spots the wife with Turlough, who is also wearing a school uniform. Things being what they are — and Turlough being Turlough — it isn't long before Turlough gets socked right in the nose.
- Obsessed with Food: His primary motivation during the first half of "Phantasmagoria" is to find something to eat. Only when he finally gets to feed his face does he properly tune in to the plot.
- Older and Wiser: Long after he left The Doctor, an older Turlough relates the story "Gardens of the Dead", and he swears that he has become this trope in his old age, even being considered downright respectable.
- Pragmatic Hero: Insists that he is this when other characters accuse him of being a Dirty Coward, and indeed his devious nature and moral ambiguity actually help to save the day more than once. These tendencies do lead to a huge argument with the Doctor in "The Entropy Plague", when Turlough suggests offering up a criminal to a life-draining device rather than one of the TARDIS crew sacrificing themselves, reasoning that all the good they do in the universe means they deserve to live over a murdering thug.
- Real Life Writes the Plot: Mark Strickson no longer lives in the UK, which meant that Turlough stories were intermittent for a long time; there were just three between 1999 and 2005, then nothing at all until 2010 bar a Companion Chronicle. After that there are usually at least a couple of stories featuring Turlough per year.
- Reluctant Hero: As always, Turlough enjoys travelling in the TARDIS, but not the day-saving that is usually required.Hannah: *screams*Turlough: Oh, no. I suppose I have to do something about this.
- The Slow Path: Spends three years stranded on Earth with Nyssa in the 51st century after an attack on the TARDIS separates them from Tegan and the Doctor.
- Sour Supporter: Like Tegan, he'll follow the Doctor to the ends of the universe, but he has no qualms about pointing out when The Doctor really hasn't thought things through or suggesting that they'd all be better off minding their own business.
- Unrequited Love Lasts Forever: "Gardens of the Dead", narrated by an older Turlough, heavily implies that he has always carried a bit of a torch for Nyssa, and he's certainly much more relaxed and kind around her than he is with Tegan.
- What the Hell Is That Accent?: Whenever he narrates Tegan's dialogue in a Companion Chronicle or Short Trip. Mark Strickson's attempt at an Australian accent has to be heard to be believed.
- Why Did It Have to Be Snakes?: Being back in a public school during "Trap for Fools" is basically his living nightmare.
- You Can't Go Home Again: He's tremendously homesick at times.
Kamelion (Fifth Doctor)
- Voiced by: Jon Culshaw
The many, many problems with the Kamelion prop on the TV series are happily non-existent in an audio format, and Big Finish found a way to work him in beginning in 2019. In these stories, Kamelion is actually allowed to venture outside of the TARDIS, and his personality is expanded to showcase his Undying Loyalty to the Doctor and his guilt over having tried to kill the team while under The Master's influence.
- Androids Are People, Too: Part of Tegan's lesson during "Devil in the Mist" is that Kamelion is not a soulless machine, he has thoughts and feelings just like she does.
- Blessed with Suck: He can sense emotions, tap information networks and transform into anyone or anything. But anyone or anything can also make him transform. "Devil in the Mist" shows that the other person doesn't necessarily need to be trying to influence him, as was the case with Tegan.
- Creepy Monotone: Well, not always creepy, but it can be very disconcerting hearing him beg Tegan and the Doctor for help in the same calm, conversational manner he uses to say everything else.
- Does Not Understand Sarcasm: And considering his travelling companions are Tegan and Turlough, he's really out of his depth.
- I Just Want to Have Friends: He is completely devoted to the Doctor right from the jump, and he spends quite a lot of time trying his hardest to get Tegan to like him.
- Involuntary Shapeshifter: Poor Kamelion really has no control over himself when someone starts to exert their influence on him, and he is always confused and somewhat upset when he comes back to himself and realizes what he's done.
- The Other Darrin: Due to Gerald Flood's Actor Existence Failure, impressionist Jon Culshaw was called on to do Kamelion's voice.
- Then Let Me Be Evil: A fairly tragic case, when it turns out he wasn't actually being controlled by the Monster of the Week at all, but only seemed to be because Tegan believed this to be the case, and he was locked onto her. It takes a lot of convincing to get him to back down, because all he wanted to be was what Tegan wanted him to be, even if that was a vicious monster.
- Unexpected Character: During "Winter", the final chapter of the anthology story "Circular Time", where he is used as a pawn by the Master. Again.
Perpugilliam "Peri" Brown (Fifth and Sixth Doctors)
Unlike on television, Peri had many adventures with the Fifth Doctor before "The Caves of Androzani", travelling with him solo as well as with original companion Erimem. Her travels with the Sixth Doctor are also explored, and as his first companion, Peri stories with the youngest version of him are used to highlight the massive Character Development he received throughout his time at Big Finish, particularly once Peri returns for more adventures post-"Mindwarp" with a much older Doctor. Peri is treated with much more care and sympathy on audio than on television, making her into a relatable and dynamic character who regularly proves her mettle against the bad guys.
- Break the Cutie: Big Finish took the TV series' habit of doing egregiously terrible things to Peri and took it deadly seriously, giving her a whole arc from her relatively carefree adventures with the Fifth Doctor to her increasingly traumatic ones with the Sixth. It recontextualises "The Caves of Androzani" into part of a Trauma Conga Line that involves her losing Erimem, then the Doctor she knows is replaced by an unstable and violent one. While she and the Sixth Doctor eventually learn to get along, her attempt to go home results in the death of all her loved ones. Then she dies. And it doesn't even end there.
- Character Focus: "Peri And The Piscon Paradox" is two hours of Peri-centric comedy, followed by one hell of a Mood Whiplash.
- Cloning Blues: Thanks to the events of "The Trial of a Time Lord", it turns out that there are five different versions of Peri in the universe. Worse is that the number given was only the one at that moment, meaning there could be more.
- Dead Alternate Counterpart: Inverted and enforced; during the Doctor's trial, Peri's timeline was altered and she was assassinated to discredit the Doctor by corruption within the offices of Gallifrey. However, realizing that the Doctor would likely take umbrage with a friend of his being killed by his own people, a new faction decided to instead have Peri be alive and married to King Yrcanos. However, another faction considered this to be akin to a fate worse than death, and so they set up Peri with another fate... and then another, and another. The heavy manipulation of her timeline splintered it so each fate we saw happened to a separate Peri, multiplying her. Suffice to say, the Doctor isn't pleased when he learns of this.
- Future Me Scares Me: Peri gets a great smacking of this in "Peri And The Piscon Paradox", finding that she has become a cold-hearted, alien hunting secret agent. Neither past nor future Peri get along very well. Unfortunately, "Mindwarp" certainly happened, and the self the past!Peri observed is actually a version of herself the Time Lords created, among others, to try and avoid the wrath of the Doctor post-trial. And no, she's not a secret agent nor alien hunter - she's just a television host who has had a very bad marriage with her highschool sweetheart, and had to act the part to keep the Web of Time stable.
- Head-Turning Beauty: Even Peri is starting to tire of being desired by everyone.
- Heterosexual Life-Partners: Her and Erimem become fast friends. Which ends up just one more thing that makes her first meeting with the Sixth Doctor so traumatic.
- I Need a Freaking Drink: After a while, she starts just disappearing in the middle of Six's lectures and wandering off to the nearest bar.
- Law of Inverse Fertility: She would love to get Happily Married and have children someday. In "Peri And The Piscon Paradox", it's revealed that the copy of Peri who was returned to Earth became infertile due to severe Domestic Abuse.
- Identical Stranger: Nicola Bryant finally gets to use her natural accent thanks to the hoary old trope of meeting her spitting image in a historical setting. It's Queen Anne in "The Church and the Crown". Someone else comments that Peri has a ridiculous accent — no comment.
- Ms. Fanservice: Preview comics for the audio episodes tend to show off her... assets. In "Nekromanteia", she gets completely naked.
- The Pirates Who Don't Do Anything: A bit of a Running Gag, as every time her skills in botany might come in handy, she gets interrupted by plot.
- Pun: She admits she's a bit addicted to making them.
- Real Women Don't Wear Dresses: She is more of a leotard and shorts kind of girl.
- Reality Ensues: The episode "The Reaping" loves this trope. Peri returns home, years later from her perspective, and four months later in her mother's normal timeline. Things go very, very wrong.
- Single Woman Seeks Good Man: Poor, poor, poor Peri keeps fancying men who turn out to be villains. Or wife beaters. Or... well, you know.
- The Slow Path: In "The Kingmaker", she and Erimem have to spend two years in Richard III's era before the Doctor can pick them up again.
- Tomboy and Girly Girl: With Erimem. Peri's the girly girl, Erimem is a warrior who spends much of her Story Arc with a shaved head.
Melanie "Mel" Jane Bush (Sixth and Seventh Doctors)
Mel's timeline got a bit wobbly as soon as she was introduced in the TV series, which Big Finish delights in making even more complicated. Stories starring her tend to be light-hearted and fun. Since the Seventh Doctor isn't quite The Chessmaster yet during their travels together (as he would eventually become with Ace), the two of them become quite adept at the Indy Ploy.
- Beware the Nice Ones: Melanie Bush made Davros beg for mercy. She spent months believing he was a kind old crippled professor. Once it turns out Davros is a lying sack of crap and reverts to form, Melanie decides to leave him at the so-called mercy of his own creations: the Juggernauts. Who are Mechanoids enhanced with human remains. Just don't piss her off, really.
- The Bus Came Back: She eventually leaves Glitz and ends up on the run before rejoining the Doctor and Ace, in stories beginning in 2016. Turns out Glitz, whom we last met selling out his own crew, sold her out too.
- Ditzy Genius:Mel: But, Doctor, we know they can't change history because we've seen the future already.Seventh Doctor: No. Unfortunately there is an awkward thing called "free will".Mel: Oh. You mean that predeterminism is merely a philosophical abstract and that the physical reality of the universe is the one in which all potential actions are permitted, including those whose effect cancel out their own logical cause?Seventh Doctor: ... Yes, Mel.
- Fish out of Temporal Water: She gets very annoyed at anything that's not The '80s.
- Fun Personified: Although she can be plenty glum and snarky, she's almost always brought in when a story needs to be Lighter and Softer. To the point where two of her episodes are full-on Panto. And when her stories do get serious, you know something's very, very wrong.
- I Need a Freaking Drink: After a while, she starts just disappearing in the middle of Six's lectures and wandering off to the nearest bar (exactly like Peri before her).
- Love Freak: In the audio play "The Juggernauts" she tries to redeem Davros. Of course, she doesn't exactly have the long history with him the Doctor has, and she only just learned what Daleks are, but still...
- New Old Flame: "The Blood Furnace" sees Mel randomly running into her old university boyfriend, Stuart, who just so happens to be involved with the aliens of the story. He offers her a job, which she initially accepts, but eventually decides she's just not ready to stop her TARDIS travels yet.
- Reality Warper: In "The Wrong Doctors", its revealed that Mel's powerful memory and contradictory timeline actually gives her, under very precise conditions, the power to pick and choose among countless alternate realities and timelines, pulling them into being in a pocket universe version of Pease Pottage created by a demonic entity from the Time Vortex.
- Real Life Writes the Plot: Bonnie Langford no longer lives in the UK, and the resulting scheduling difficulties meant there were no Mel stories released for some five and a half years between 2007 and 2013.
- The Slow Path: She gets stuck in 1782 for six months.
- Straight Man: Increasingly relegated to the role of the Doctor's keeper. Six is always indignant (forcing Mel to smooth things over), and Seven never shuts up (he can't craft a halfway-decent alibi without Mel backing him up).Mel: Doctor, do you know what happened to Holmes in the end?
Mel: Watson bashed him in the head with his own violin for being so aggravating.
- Took a Level in Badass: Her time spent travelling with Glitz had quite the influence on Mel. By the time she meets the Doctor and Ace again in "A Life of Crime", she has become an expert safecracker, a cunning and devious businesswoman and nowhere near as much of The Ditz as she used to be.
Dorothy "Ace" Gale McShane (Seventh Doctor)
Ace is just a bit older, now even more awesome, and travelling with the Seventh Doctor with no intention of ever stopping. She also appears in a few "Side Step" stories, which take place during the Doctor Who New Adventures.
- Affectionate Gesture to the Head: She eventually kisses the Doctor, once, as a very sweet gesture of friendship. Since it's audio, feel free to imagine it as The Big Damn Kiss.
- Break the Cutie: From her very first Big Finish episode onwards, she gets broken over, and over, and over.
- Can't Stay Normal: Due to events involving the Word Lord, she ends up stuck in 2027 A.D. She makes a half-hearted attempt at living a normal life, but (despite finding a wonderful fiancé) ends up working with UNIT and through sheer determination eventually finds her way back to the Doctor against all odds. As soon as she can go back to the TARDIS, she abandons her fiancé without hesitation, though she cries over the life she might have had. She does try to leave a goodbye for him, and an explanation why she's going, but the Doctor (unknowingly) erases it, and she's too drained by the initial message to make another.
- The Chessmaster: Shows off her skills extensively in "A Death In The Family", slowly but steadily outwitting a Reality Warper. She's shocked, in the end, by how well she did, considering it's usually the Doctor who does that sort of thing.
- Continuity Snarl: Good luck working out if there's one, two or more Aces, and just where one begins and the other ends. Early on, Big Finish considered themselves in continuity with the Virgin New Adventures and Past Doctor Adventures (and specifically, Ace's history with Benny). Then they decided to politely ignore them. Now, with their more holistic approach to continuity, Ace can share new adventures with Bernice Summerfield and there's adaptations of old ones, but it's difficult to say whether they come before or after her adventures with Hexnote . Her appearances in Gallifrey and Class mean her history through the Time War and up to the new series is actually quite simple, but what exactly happened to her between "Survival" and then is much more complicated. Numerous stories have attempted to straighten it out:
- The Past Doctor Adventures introduced the first canonical Continuity Snarl into her personal history, involving her timeline-changing death as part of an arc in the Eighth Doctor Adventures in 1998. This story, written by Mike Tucker and Robert Perry, tracked into her early Big Finish appearances written by the pair and explained why her surname originally inconsistent.
- Gallifrey: Time War finally addressed the problem head-on by revealing that Braxietel had been manipulating Ace's timeline for some time. In both "Intervention Earth" and the novel At Childhood's End (written by Sophie Aldred herself) Ace remembers contradictory events, including the timeline where she died, and like Benny, she now remembers every version of her inconsistent history.
- Determinator: In "The Shadow of the Scourge", she faces an Eldritch Abomination that talks its victims into crippling despair. Her solution? To have someone destroy her eardrums, because she knows the TARDIS medbay can just fix her up later. She spends over half the story completely deaf and with blood running out of her ears, and she's not even bothered.
- Give Him a Normal Life: The Doctor regularly rotates out his companions, and Ace is a living demonstration of why. She's unstuck in time: no relationships, losing track of how long she's been travelled in the TARDIS, more and more willing to resort to unsavory methods. If the Doctor wanted a chessmaster for a companion, he'd talk to himself.Doctor: Picking up a gun? Launching a missile? Destroying a planet?
Ace: (Coldly) You've done it.
Doctor: You're not me! You were never meant to be!
- Guile Hero: Taking a few levels in the trope, and trying to be more like the Doctor. She's not extremely good at it at first.
- Hidden Depths: Her first adventure ("The Fearmonger") shows both her extreme fear of, and her total devotion to, the Seventh Doctor.
- I Have You Now, My Pretty: David Tennant's character in "Colditz" has some very unsavory intentions towards her.
- In Love with the Mark: She immediately sets to work resurrecting the Doctor in "Death in the Family." Stranded as she is with a dying TARDIS, Ace spends several months dating a man named Henry Noone, a relationship that grows serious enough that Henry eventually pops the question. Ace ultimately abandons Henry, having taking advantage of his surname to compete with Nobody No-One. But its clear that there was genuine affection for him, which greatly pleases Nobody No-One.Nobody No-One: Better keep an eye on your monkeys, Mister Organ Grinder. They're learning to play music without you.
- Long-Lost Relative: Her brother Liam.
- Nice Job Breaking It, Hero!: While studying at Time Lord Academy, she goes rogue and tries to destroy Skaro far into its past. And fails, miserably.
- The Nicknamer: "Oldman Whitehair, Beatles Haircut, Frilly Shirt, Longscarf Bigeyes, Cricket Boy, Joseph And His Amazing Technicolor Dreamcoat, and Lord Byron..."
- Ship Tease: Quite a bit of it with Hex, though she mostly just sees him as a little brother.
- Story Arc: The benefit of having been the Doctor's companion when the TV series was cancelled is that Ace's story was never given an end, meaning writers don't have to worry about colouring too much outside the lines with her adventures. As such, Ace is the rare companion to get a major story arc of her own in the monthly adventures, and her life is (roughly) progressed ahead at a slow but regular rate. The early episodes tend to also be understandable as standalone stories, though.
- The Last Straw: Suffice it to say, the Doctor Ace travels with has left her with a number of grievances, particularly in how he continues to manipulate allies as though they were part of a game even when it's brought up how distrustful it makes said allies and makes them have a bad tendency of messing up otherwise sound plans they aren't aware of. This has made her threaten to leave the TARDIS a number of times, but they never held until the Doctor deliberately allows Jan to die in the adaptation of "Love and War". Sick of the constant manipulations, and having lost yet another person she cared deeply over in the name of a plan to fight the monsters, Ace leaves the TARDIS.
- Took a Level in Badass: The Doctor manages to enroll her in Time Lord Academy (after at least one failed attempt), and she becomes a Celestial Intervention Agency operative. This was originally planned for the TV series.
- In a more understated one, Ace learning how to pilot the TARDIS without training, culminating in her actually being able to roughly pilot it in "Afterlife". "Signs and Wonders" showcases a much better departure.
- Vague Age: By the time Ace meets Hex, she's in her late teens or very early twenties, old enough to go undercover among adults without comment, but it's strongly implied she's been travelling so long she's lost track of her own age. (The Continuity Snarl mentioned above doesn't help, either, since different writers clearly had different ideas about whether they were writing a post-"Survival" teenager or a post-VNAs young adult.)
Rose Tyler (Tenth Doctor)
Kazran Sardick (Eleventh Doctor)
Future curmudgeon and controller of the cloud belt machine, for now the Doctor visits him every Christmas Eve in an attempt to change him for the better. Before meeting Abigail he would like a good story to tell her so the Doctor indulges him the best way he can think of.
Big Finish has introduced many new companions, who travel with the Doctor and sometimes afterwards have adventures without him. A few made it into TV series canon as of "The Night of the Doctor".
The companions listed here are sorted in chronological order, by their first appearance in Big Finish.
Several characters from other Doctor Who media also appear in Big Finish, or appear most prominently in Big Finish ranges with their own Tropes pages. For tropes relating to Bernice Summerfield and Bev Tarrant, see here; for Frobisher, Maxwell Edison and Izzy Sinclair, see here; for Fitz Kreiner, see here; for Iris Wildthyme, see here; for Chris Cwej and Roslyn "Roz" Forrester, see here; for Narvin, see here.
Dr. Evelyn Smythe, later Evelyn Rossiter (Sixth and Seventh Doctors)
One of the Doctor's rare older companions, 55-year-old history professor Evelyn Smythe could also match the Sixth Doctor's acid tongue — a rare bird indeed. Evelyn is by far one of the warmest, friendliest and most emotionally involved companions that the Doctor has ever had. On the one hand, this mellows him out considerably, and the two of them become incredibly close. On the other hand, though, Evelyn can't even begin to cope with the amount of pain and death that a TARDIS traveller sees, and although she tries to stay brave, every friend she loses breaks her heart.
- Anachronic Order: From "Thicker Than Water" onwards, her episodes get released out of order.
- Anguished Declaration of Love: A platonic one to the Doctor.
- Badass Teacher: She's a history teacher. And she's badass. She also knits sweaters for her students.
- Break the Cutie: She tries to stay brave throughout her adventures, but the cracks begin to form at the end of "Jubilee". She starts to properly break in the middle of "Doctor Who And The Pirates". "Project: Lazarus" sees her finally unable to cope with the Doctor's lifestyle.
- Christmas Cake: One of the oldest companions the Doctor has ever had.
- Continuity Snarl/Alternate Continuity: Her appearance in the Past Doctor Adventures novel "Instruments of Darkness" features Evelyn leaving the TARDIS in a completely different manner to her eventual finale years later in "Thicker Than Water", mostly due to Big Finish's changing attitudes to cross-medium continuity. And the cliffhanger ending to "Real Time", where the Cyber-controller was actually a future Evelyn was left unresolved due to the BBC abandoning the webcast format. Presumably it was wrapped up in an unseen adventure later.
- Cool Old Lady: Cool enough to chill out Six. (A little.)
- Cybernetics Will Eat Your Soul: In "Real Time".
- Deadpan Snarker: She is naturally quite straightforward, but the Doctor's more boastful rants tend to bring out this side of her.
- Foreshadowing: Thanks to Big Finish releasing episodes in whatever Anachronic Order they like, the Doctor often fondly remembers Evelyn in episodes taking place after she leaves team TARDIS... which are released long before we know why she leaves team TARDIS.
- Genius Sweet Tooth
- Happily Married: To Rossiter.
- Hard-Drinking Party Girl: Evelyn regularly parties with her students, and recalls taking part in a yard of ale drinking contest with them.The Doctor: "Who won?"Evelyn: "Oh the yard of ale, definitely."
- The Heart: A serious contender for the warmest, kindest, most emotionally involved companion the Doctor's ever had. She slowly learns that those qualities are not at all suitable for the amount of death and pain a TARDIS traveller tends to see.
- Heroic Sacrifice: Helping the Doctor take out a being of nearly ultimate power, at the cost of her own life... as she was already dying, Evelyn was more than willing to ensure her end happened on her terms.
- I Choose to Stay: With Rossiter.
- It Never Gets Any Easier: Evelyn's main arc revolves around her coping with all the death that follows in the Doctor's wake. He seems to take it all in his stride, while she, well, doesn't. What she takes away from it is that there is no happily ever after, because life has no ever after, just days that are happy and days that are sad. And as long as one person cares, you can keep on living until the next day.
- It Is Pronounced "Tro-PAY": Eve-eh-lyn. At one point she posses as Evil Evelyn, the Pirate Queen.
- Jumped at the Call: Six doesn't get any say in whether or not she gets to be a companion, since she's already made up her mind just minutes after they first meet (well, after he proved he wasn't a lunatic anyways). As we find out much later, it's partly because she suffered a heart attack not too long before, and the university wanted to try and force her into retirement.
- Married to the Job: Almost literally, in that she divorced her husband so she could spend more time at work.
- Medical Horror: Especially in "Real Time" and "Thicker Than Water".
- Morality Chain: She really brings out Six's softer side, and he grows to care tremendously for her. She also calls him out hard when he puts on a brave face and pretends that everything's fine when it very clearly isn't.
- Non-Action Snarker
- Not That Kind of Doctor: She often has the same problem as the Doctor when describing herself.
- Older Sidekick: She seems noticeably older than the 40ish Sixth Doctor, though she technically isn't.
- Parental Substitute: Eventually becomes one for Hex.
- Screw Politeness, I'm a Senior!: Usually, Evelyn's a perfectly friendly old dear, but when she needs to get her way...
- Scout-Out: In "The 100 Days of the Doctor", Evelyn, bewildered by the implications of regeneration, asks if the Doctor loses all of his accumulated life lessons. Six searches for a positive spin to put on this; he suggests that one keeps the memories, but views them from an outsider's perspective. This reminds Evelyn of another one of life's great hurdles:Doctor: The ultimate mystery of the Time Lords... is like signing on with the Girl's Junior Scout Troop. That's... one of the most spectacular similes I have ever heard attempted.
- Spot the Impostor: Evelyn identified a man calling himself "the Doctor" as a fake because he didn't know anything about the Daleks.
- Thanatos Gambit: A future Evelyn, now on her deathbed, manages to trick the Word Lord into becoming trapped in her mind as it slowly shuts down.
- Your Days Are Numbered: She's hiding a serious heart condition from Six, and part of the reason she wants to travel in the TARDIS is to live life to the fullest while she still can.
Princess Erimemushinteperem (Fifth Doctor)
Erimem is a daughter of Pharaoh Amenhotep II. Rescued by the Fifth Doctor and Peri from Ancient Egypt 1400 B.C. after a few complications involving her impending coronation, she travelled the galaxy with the Doctor to learn about different times and places. Also appears in a number of prose stories and novellas and the solo full-length novel The Coming of the Queen, and subsequently in her own book series by Thebes Publishing.
- Abusive Parents: Comes with the time period, but it's revealed in "The Roof of the World" that her father planned to have her tossed to the lepers for accidentally seeing something she wasn't supposed to. And she only finds out about this in limbo. But as it turns out, it was all to protect her and the rest of the world.
- Action Girl: She was trained in sword(wo)manship by the Captain of the Royal Guard. Comes in handy when they visit Three Musketeer-era France.
- Ambadassador: She's extremely adept at political negotiations... but not mature enough to judge when to stand up for her convictions and when to simply keep silent. When push comes to shove, she can also fight her way out.
- Ancient Egypt
- Attempted Rape: In "Nekromanteia", in an attempt to make the series a bit Darker and Edgier, Erimem is almost raped but manages to fight off her attacker. (Fan reception of the episode was overwhelmingly negative, and the author was never hired to write for Big Finish Doctor Who again.)
- Badass Normal: Erimem never just sits back when there's trouble.
- Bald of Awesome/Bald Woman: Keeps her head shaved as is fashionable in Egypt and proves her awesomeness both in battle and with her courage, but she begins to grow her hair out starting in "The Church and the Crown" and afterwards is depicted wearing it longer.
- Beware the Nice Ones: Has a habit of casually breaking people's arms when they try to touch her in less pleasant ways.
- Blue Blood: Being born under the king of Egypt will do that to you, though she doesn't flaunt it.
- Break the Cutie: She definitely has her moments. Nearly being raped in "Nekromanteia" for one, being convinced she was dead in "The Roof of the World", and seriously considering suicide in "The Kingmaker". She powers through, regardless, if a bit weathered.
- BrotherSister Incest: Was engaged to her brother before his untimely death, and rather excited about the prospect.
- Deliberate Values Dissonance: She sees nothing wrong with corporal punishment and a moderate level of fascism, if it's for the good of the people. This becomes very interesting when she gets into a sort of romance with Vlad III, Prince of Wallachia... a.k.a. Dracula.
- Driven to Suicide: In "The Kingmaker", although seeing Peri's reaction to the idea stops her. She pretends it was all just a joke, but later reveals to the Doctor that she was deadly serious, and that she feels tremendously guilty for lying about it to Peri.
- Guile Hero: Years of court etiquette gives her a lot of skill in manipulating people. She effortlessly talks her way into the King of France's court, and manages to stay in Count Vlad's good graces despite the very hostile environment.
- Fake Nationality: Erimem's Egyptian. Her actress is most certainly not.
- Faking the Dead
- Fish out of Temporal Water: Frequently. "The Veiled Leopard" has her in a bodice and high heels, wanting to try 1960s French fashion. She immediately regrets that decision when she realises she can't properly move anymore.
- Friendship Moment: In "No Place Like Home", she and the Doctor quickly bond over how dreadfully stuffy and ceremonial their respective civilisations are. She also learns that he's technically the President of Gallifrey, and that he's on the run from it, just like she is. She and Peri have many besides.
- Heterosexual Life-Partners: Mainly with Peri. They're the equivalent of gossiping girls when around each other.
- Rebellious Princess: A textbook example.
- Royals Who Actually Do Something: She sees no reason to not go into battle with her troops, and is quite able to rally an army should she need one.
- The Slow Path: In "The Kingmaker".
- Team Pet: Antranak, a stray cat she dragged along during her hasty escape from ancient Egypt. The Doctor really doesn't get along with Antranak, but tolerates the cat for Erimem's sake.
- Translator Microbes: An odd aversion to the trope; though the TARDIS allowed Erimem to converse with people who didn't know Egyptian just fine, she had to be taught by Peri over the course of several adventures how to read and write English. Before that, she only knew (and could read) Egyptian hieroglyphs. It's never elaborated on whether or not this was a problem with the translator circuit that was later fixed.
- Tomboy and Girly Girl: With Peri. Peri's the girly girl, Erimem is a warrior who spends much of her Story Arc with a shaved head.
- The World Is Just Awesome: When she first joins up with the Fifth Doctor, she's never ever heard of tea. The Doctor promises to take her out for snowball fights and ice cream and anything else she's never seen before. Her travels leave her in a perpetual state of wonder, though due to her excellent etiquette, she's never too much of a Fish out of Water.
Charlotte "Charley" Elspeth Pollard (Eighth Doctor and Sixth Doctor)
Edwardian adventuress Charlotte Pollard ran away from her boring life among the upper crust in 1930, only to be nearly killed in an airship crash. Fortunately, the Eighth Doctor was around. Charley is a pragmatic and very adventurous young lady who strongly values Brutal Honesty, making up for her lack of life experience with a willingness to try anything once. Got her own spin-off, and technically the longest-running companion by continuous, uninterrupted years in all performed Doctor Who - Fisher and Paul McGann recorded together from 2001 to 2007 and then she did another two years opposite Colin Baker.
- Alice Allusion: In "Zagreus", she's forced to take on the role of Alice, take up the Vorpal sword, and fight the Jabberwock. It turns out that the TARDIS was trying to save reality itself by confusing Zagreus into submission, using the most nonsensical thing she could possibly find in Charley's head: her memories of reading Alice in Wonderland.
- Anguished Declaration of Love: She and the Doctor exchange one, though they both mean different things by it, in "Neverland". Things get extremely out of hand after that in "Scherzo".
- Be Careful What You Wish For: She very much wants to become a mother. The idea is explored in a variety of creative ways, none of which are at all fun for Charley.
- The Big Damn Kiss: With the Doctor in "Scherzo". It's played for terrifying, indescribably gruesome Body Horror.
- Brainwashed and Crazy: Seemingly falls victim to it every second story, may actually have toppled Sarah Jane and Leela as the most brainwashed companion.
- Breakout Character: One of the most popular Doctor Who companions ever, lasting four entire story arcs: her initial run with Eight, the Divergent Universe arc, her second arc with Eight, and her run with Six. After which she promptly got her own spinoff. Also the only original Big Finish character to come back for the Big Finish 50th anniversary, and the first Big Finish companion to be mentioned by the Eighth Doctor in his return to the screen. She's the first Big Finish character to appear in Doctor Who Legacy, too. Word of Moffat has it that she was also with Eight during the climax of "The Day of the Doctor", standing just offscreen.
- Brutal Honesty: Like her description above says, she's a big fan of it.
- Buffy Speak:A 'thingamy' was a tool, one hit someone else with a 'dooda', and a 'whatsit' bleeped. One could always combine them, of course. 'Thingamydooda' would suit a space spanner, for example. Once, for variety, she had tried out 'oojamaflip', but shed found it rather common.
- Canon Immigrant: Mentioned in "The Night of the Doctor".
- Catchphrase: "My friends call me Charley". Quite a bit of drama is gotten from characters adamantly calling her "Charlotte" regardless, especially the Sixth Doctor.
- Characters as Device: Enjoys lampshading her Sidekick status:C'rizz: Doctor, what's happening?
Eighth Doctor: Hmm?
C'rizz: I said "what's happening?"
Charley: No, not like that. Ahem. "Doctor, what's happening, Doctor?!!"
C'rizz: Oh, that's good.
Charley: Practice, you see.
- Commuting on a Bus: Her appearances are much more intermittent after she parts company with Six. The two box sets of her own series were released several years apart, and she has popped up sporadically in occasional stories and Short Trips set during her time with The Doctor since.
- Double Consciousness: Develops one after "The Chimes of Midnight", and remembers both dying in the R101 and being rescued by the Doctor.
- English Rose: She was raised to become one, but said Screw This, I'm Outta Here! as soon as she had the chance to. However, many of her traits fit perfectly the idea of a pretty, classy English girl. She has hard time dealing with the fact she's not going to see her family ever again and she longs to become a mother. She speaks in the classic received pronunciation, she likes Jane Austen and history, and her etiquette lessons come quite handy during her time-travelling adventures. Occasionally referenced:Keep: There's a tint to your skin.
Charley: [sarcastically] It's called English Rose.
- Gorgeous Period Dress: A huge fan of it. Jane Austen is one of her favourite authors, and she's very much in love with the past. She also sees historical adventures as an excuse to put her endless etiquette lessons to good use, which typically makes the Doctor groan.
- Ignored Enamored Underling: The Doctor knows full well that Charley's madly in love with him. He ignores it until it's much, much too late, at which point they're stuck in the living hell of "Scherzo". Much later, Charley tells the Sixth Doctor that Eight had been in love with her, too — although he'd never have admitted to being in love, per se.
- Lady of Adventure: Will try anything once, and very quickly and eagerly adapts to future culture and technology. Loves wielding giant swords, even if she has zero skill with them. Ran away from home to dress up as a boy, sneaked into an international experimental zeppelin flight, and got to Singapore on time for a romantic rooftop rendezvous.
- Law of Inverse Fertility: Played With. She really, really wants to become a mother, but the universe seems to conspire against her in that regard... making her give birth to monsters over and over.
- MacGyvering: Comes up occasionally. Her excellent upper-class education gives her a few levels in Science Hero, which she uses whenever it's necessary. In "Solitaire", she's able to fashion a rudimentary electromagnet out of its base components.
- Mercy Kill: In one truly heartbreaking scene in "Zagreus", she puts the Doctor out of his misery after he begs her to run him through with her sword.
- Reality Ensues: Several episodes have her dealing with the realization that she will never see her family again due to them thinking she's dead. She does, eventually, in "The Fall of the House of Pollard"; though her father is happy to see her, her mother gives her a well played What the Hell, Hero? moment and Charley takes a moment to remunerate on the fallout her "death" left behind. It goes From Bad to Worse.
- Rebellious Spirit: As a child, she let Roma sleep in her family's attic. She only got more rebellious as she got older.
- Ripple Effect-Proof Memory: Develops this kind of memory after a while.
- Screw This, I'm Outta Here!: When the Eighth Doctor is relieved about C'rizz' death, Charley realises that life with him is too alien and horrifying for her.
- Ship Sinking: After the Divergent Universe arc, the Doctor makes her promise to stop yearning for him.
- Smitten Teenage Girl: Falls madly in love with the Eighth Doctor, which is completely Played for Drama. Eight is extremely uncomfortable with it.
- Sophisticated as Hell: Charley narrowly avoids a Precision F-Strike when the Celestial Toymaker forces her to think of a four-letter password - to be fair, she was in the middle of a shrinking death trap.Celestial Toymaker: Do you know how many four-letter words there are in the English language, miss Pollard?Charley: I can think of a few right now.
- Temporal Paradox: Was saved from the crash of the R101 by the Doctor, and went on to travel with him. Time appears to proceed normally, until we find out that the Doctor saving her from certain firey doom caused a ripple in the Web of Time. History wrote that Charley was supposed to go down with the ship, but because of her survival, the ripple lead to all sorts of paradoxes and tons of "things-that-shouldn't-have-happened" to happen throughout the whole of history. All this, plus causing the Web of Time to slowly unravel itself due to her merely existing.
- Time Crash: Is a living one, thanks to something going mighty wrong when the Doctor rescued her. Nearly every story in her initial arc involves time itself warping around her and history developing continuity errors. Although there's nothing particularly special about her or her rescue, she accidentally becomes the "patient zero" of a grand scale disaster. The Doctor fixes this in a rather creative way.
- Timey-Wimey Ball: Thanks to the fun of time travel in Doctor Who, Charley is one of the very few companions to know the Doctor before he knows her. Sorta. Long story short, she was a companion of the Eighth Doctor, assumed he died in an adventure and wound up later being a companion to the Sixth Doctor. Whose memory of Charley was wiped so the timeline would be preserved when he was the Eighth Doctor. Wibbly wobbly, timey wimey indeed.
- Tomboyish Name: Her Christian name is Charlotte, but she goes by Charley.
- Torture Porn: With some frequency, and most notably in "The Creed of the Kromon".
- Uncanny Family Resemblance: Her sister Cecilia, who appears in Gallifrey, is also played by India Fisher. India's likeness is used for Cecilia on the cover art, although made to look slightly different from Charley.
- Unwitting Instigator of Doom: Charley's family did not take her passing well. Years after her death, her family are nearly completely broke, having to sell their previous estate and unable to hold onto more than a single servant. At least part of their ruin was from hiring various mediums to try and contact her spirit, while another significant part was just sheer depression over her being gone. She helps them out of it, but not without cost...
- You Are Worth Hell: Charley simply will never abandon the Doctor, no matter how many times he tries to make a Heroic Sacrifice so she can live a normal life. He's very seriously not happy with it.
- You Can't Go Home Again: She realized that that she cannot and will not see her family because they naturally assume she's dead. This becomes worse come "The Fall of the House of Pollard"; Charley does get home, and faces some of the fallout with her parents. Then the Viyrans catch up with her, and they erase every memory they have of her, ensuring she can never go back to them.
Thomas Hector "Hex" Schofield (Seventh Doctor)
Hex was introduced as a character well before his first proper appearance, during the Sixth Doctor's encounters with the Forge. He later became a staff nurse and was encountered by the Seventh Doctor and Ace in 2021. Hex is compassionate and good at keeping a cool head, even during his Oh My God freakouts.
- Babies Ever After: Has a couple of children with Sally Morgan, after the two of them finish traveling in the TARDIS.
- Badass Normal: Considering the fact that he's just a nurse and is more than often in over his head, Hex does some pretty awesome stuff. Especially taking out two elder Gods in one day, admittedly at the cost of his own life. Not bad for someone without Nitro-9.
- Big "OMG!": Not always big, but a bit of a Catchphrase. Used to dramatic effect in "The Settling" with Oliver Cromwell.
- Break the Cutie: Villains love to torture poor Hex. Especially Nimrod, telling him enough of the truth about how his mother died to make him distrust the Doctor and then tricking him into resurrecting her as a mindless vampire monster. This would have been bad enough had he not just recovered from being shot. He's also been gratuitously tortured in an English Military Hospital, and nearly burned as a witch by Oliver Cromwell. Indeed, the writers at Big Finish would often joke about what crap they could shove on Hex with each new script.
- Despair Event Horizon: When he thinks the Doctor and Ace are dead and he's stranded in the Siege of Wexford, he leads the townspeople into battle and becomes a little bit of a Blood Knight.
- Did Not Get the Girl: He falls in love with Ace pretty early on. She's not interested (not to mention incapable of having a functional romantic relationship with anyone), and he gets over it eventually when he realises she'd "have [him] for breakfast". They just become close friends instead. Notably not the case when it came to Sally Morgan.
- Eye Gouge: He manages to get himself permanently blinded — turns out looking directly at a nuclear explosion is a very bad idea. Luckily for him, it was part of a "Groundhog Day" Loop, and he gets his eyesight back once the loop resets.
- Earn Your Happy Ending: Dear Lord did he. After having been literally turned into a new man by Koloon, who himself didn't exactly lead a happy life, Hex is effectively ressurected from the dead for good, and gets together with Sally Morgan. They hook up and have a couple of kids, satisfied with their lives together.
- The Heart: He's sensitive, caring, honest, and instantly falls into the role of The Chick once the team gets larger.
- Heroic BSoD:
- After the events of "The Settling", which Ace considers his very own "Ghost Light".
- After finding out the fate of his mother, not to mention the fact that the Doctor had chosen to lie by omission about her fate for so long.
- Heroic Sacrifice: A twofold one for Hex, actually. Hex uses the ultimate power of the universe in a game of proverbial chess with Fenric (yes, THAT Fenric) to take out Fenric's opponent, who wanted to destroy the universe. With the game over, and Fenric still having lost despite his opponent being banished, Fenric takes over Hex out of spite. Hex restrains Fenric (an elder freaking god, mind you) and throws himself out into the Space-Time Vortex to make sure Fenric is dealt with once and for all. While bleeding out from a fatal wound he'd received months ago that Fenric's opponent was holding back so he could use Hex as a pawn against Fenric in the first place. Holy crap.
- Hospital Hottie: Actor Philip Olivier is a professional (nude) model.
- It Is Pronounced "Tro-PAY": Skoe-field.
- Nice Job Breaking It, Hero!: In "The Settling", he accidentally causes the Siege of Wexford.
- Parental Substitute: He's eventually adopted by Evelyn. Who then promptly dies.
- Raised by Grandparents: Hex never knew his mom, raised by his grandmother instead - he even thought she was his mom until he was older.
- The Reveal: In the middle of the Sixth Doctor story "Thicker Than Water", the Seventh Doctor shows up completely out of nowhere, uncredited and unannounced, to reveal to Evelyn that Hex is Tommie, Cassie's son from the Forge Story Arc.
- Ship Tease:
- Plenty of it with Ace. He fancies her quite a bit and would love to have a nice shag or maybe a date, but Ace just sees him as a little brother.
- He gets a few moments of these with Sally Morgan in the few times they're together. It takes.
- Taking You with Me
- These Hands Have Killed: He does not cope well with being made to fight in a war.
- The World Is Just Awesome: Hex is a bit of a sci-fi dork — and in many ways a precursor to Rory Williams — and isn't sure at first whether he's cut out for the reality of space/time adventures. He quickly warms up to it and delights in seeing new things, and Ace (who's much more jaded) loves to watch him enjoy his adventures.
C'rizz (Eighth Doctor)
Pronounced KER-izz. C'rizz is a chameleonic monk from the Divergent universe who got kidnapped during his wedding, used as a guinea pig, and subsequently broken over and over and over again by everything that crosses his path. He tries to put on a brave face and becomes close friends with Charley. C'rizz never gets much Character Development during his first Story Arc, and as we find out eventually, there's a very good reason for that...
- Artificial Human: Well, Eutermesan. And he has no idea.
- The Assimilator: As revealed in "Something Inside", he can permanently absorb people's powers by murdering them. He also takes on little bits of the personality of every person he meets, a fact he actively hates.
- The Atoner: For killing L'da.
- Anti-Hero: Most of the Doctor's companions share at least the basics of their moral code with that of the Doctor. C'rizz... really, really doesn't.
- Beware the Nice Ones: C'rizz is kind, helpful, even valiant at times, and will ruthlessly murder you or grant you a Fate Worse than Death if you hurt him.
- Blessed with Suck: He strongly dislikes his own powers.
- Blue-and-Orange Morality: The way C'rizz sees the world is very alien and intensely frightening at times.
- Break the Cutie: Something the Expanded Universe excels at, it seems.
- Broken Masquerade: He keeps up the façade for a good long time. Until he can't anymore.
- Canon Immigrant: Mentioned in "The Night of the Doctor".
- Characters as Device: C'rizz is an experiment in what happens when a companion just doesn't fit in team TARDIS all that well. After his final episode, the Doctor is actually relieved that things can go back to normal again. His response horrifies Charley so much that she breaks off their friendship and leaves Eight forever.
- Creepy Good: "Good" being a very relative term, thanks to his Blue-and-Orange Morality.
- The Empath: Adapts to whomever he's around. The reason he has no Character Development to speak of at first is because he simply doesn't have much of an identity of his own. Entirely Played for Drama.
- Heroic Sacrifice
- Humiliation Conga: In "Other Lives", he decides to leave the TARDIS and go look for the Doctor... on 19th century Earth. He's pretty much immediately captured, chained up, forced to rip off his clothes and put on a thong, and displayed as a sideshow freak.
- I See Dead People: Originally played straight at the start of "The Last", where C'rizz is but one of a few who see the spirits of the dead surrounding them. Later actually twisted somewhat at the end of "Terror Firma", where it's revealed that C'rizz sees each and every person he's killed, or rather "saved", as a ghost around him.
- Lizard Folk: He's a humanoid chameleon with an exoskeleton.
- Mercy Kill: Originally played painfully straight in his first story, where C'rizz is forced to kill his loved one to alleviate her suffering and release her from what is essentially an undeath. However, the repeated trauma that C'rizz undergoes eventually leads him to believe that each person that he's killed is also one that he's "saved". This includes a Dalek. His church's credo revolves almost entirely around killing, and he was one of their most adept assassins.
- Path of Inspiration: Unbeknownst to him (or to anyone, really), his church was founded by Rassilon.
- Power Copying: From the people he "saves".
- Power Nullifier: He becomes quite adept at shutting his mind (and others' minds) off from scrying and hallucinations, since he picked up moderate telepathy from someone he murdered.
- Pūnct'uatìon Sh'akër: Just like his fiancée, L'da.
- Psychopomp: What turns out to be the purpose of his existence.
- Reality Warper: In "Absolution".
- Rebel Prince: His father is the leader of the Foundation. Although it's later revealed that things are a little more complicated.
- Sealed Inside a Person-Shaped Can: The people he saves become trapped inside him forever. It's eventually revealed that this is exactly what he was created for.
- Telepathy: He picked up a bit of it once from someone he killed.
- This Looks Like a Job for Aquaman: In "Memory Lane", the heroes fight a nanotech substance that latches onto people's personalities. C'rizz is able to confuse it into a neutral state by letting it into his mind, since he has no clear-cut personality.
- Token Evil Teammate: Sort of. He's certainly this during the Divergent arc, but gradually becomes more like the Doctor and Charley, thanks to his natural ability to copy people's moods and personalities. He still occasionally maims and murders, though, and the Doctor and Charley stay completely unaware of it for a very long time.
- Torture Porn: He gets severely physically tortured in "Something Inside", and nearly dies from his internal injuries.
- Trauma Conga Line: First, his beloved is horrendously mutated before his eyes, forcing C'rizz to kill her off out of mercy. As he begins to travel to other worlds, though, it seems like each subsequent author and story was continually trying to out-do the previous one.
- Weak-Willed: His chameleonic skin isn't the only thing that adapts to his environment. As it turns out, his race also subconsciously adjusts emotionally to people around them.
- You Wouldn't Like Me When I'm Angry: He'll break your spine and rip your eyes out.
Lucie Miller (Eighth Doctor)
Lucie bleedin' Miller is dumped on the TARDIS by the Time Lords without explanation (at first), and completely fails to be impressed by the alien ponce in front of her. Over the years, she and the Doctor end up becoming best friends.
- Anguished Declaration of Love: In a welcome subversion of the trope, her big damn "I love you" to the Doctor is completely non-romantic. Apart from some very mild flirting, they really are just friends.
- Big Damn Heroes: Just when it looks like the Daleks are about to win, here comes Lucie with a spaceship and a really handy nuke.
- Book Dumb: Gets rather annoyed whenever the Doctor points this out.
- Break the Cutie: Severely.
- Brutal Honesty: Values it to the point where the Doctor lying to her causes her to break off their friendship.
- Canon Immigrant: Mentioned in "The Night of the Doctor".
- Catchphrase: "What's that when it's at home?", and "Hiya!"
- Combat Pragmatist
- Commuting on a Bus: She was absent for the first half of the fourth season (see Put on a Bus below). Though Sheridan Smith played two androids the Doctor had programmed to have her voice in "Prisoner of the Sun", the January 2011 episode.
- Deadpan Snarker: Extra emphasis on "snarker". Describes herself as "Sarcasmo, the Lord of Sarcasm".
- Death by Disfigurement
- Dying Moment of Awesome: Her Heroic Sacrifice literally saves the world.
- Future Me Scares Me: Subverted. It's suggested that Lucie is destined to become a ruthless dictator, but then it turns out it was someone else.
- Gratuitous French: She and the Doctor pull this at the beginning of "Scapegoat". Her French is hilariously terrible.
- Handicapped Badass: As of "Lucie Miller", she contracted a plague while on holiday with Alex, which left her blind in one eye and dependent on leg braces. In spite of this, she, Alex, and Susan staged several raids on Dalek forces. With nuclear submarines.
- He Is Not My Boyfriend: There's a running gag of people assuming the Doctor is her boyfriend, to her annoyance. Unusually for the trope, he really isn't; the two are close friends, but that's it.
- Heroic Sacrifice: Taking a doomsday nuke into the heart of a Dalek time engine while shouting out "LUCIE BLEEDIN' MILLER!" so the Daleks knew just who screwed them over. Notably, earlier on, she's a rare case of Heroic Sacrifice survivor. Once things started going to hell, she expected to die on a mission, and didn't particularly care... until she found out Susan's TARDIS key was active, and the Doctor was (finally) coming. But, lest you think Big Finish was only kidding with the title, she ends up dying anyway.
- Killed Off for Real
- The Lad-ette: Particularly in her first episode.
- Lady Swears-a-Lot: And has a lot of fun with it. Freely mixes up "bleedin' hell" with "oh, sugar!".
- Noodle Incident: More of a Jelly Incident, in her case.Lucie: ... It's just I've got a thing about jelly. Incident at a children's party, 1992. Trust me, you don't wanna know.
- Not Herself: Is very easily hypnotised and possessed, to her constant frustration. Is also extremely adept at staying conscious during mind control, though, and fighting back from the inside.
- Of Corsets Sexy: Subverted in "Scapegoat", in which Lucie, having donned Gorgeous Period Dress for what is meant to be a night at the Moulin Rouge, has this exchange with the Doctor:Doctor: You look very... uh... very... uh...
Lucie: Say "cheap" and I'll have you.
- Oop North: Lucie is from Blackpool.
- Punctuated Pounding: On several occasions. In "Orbis", the Doctor has gone amnesiac (again) and forgotten her, so she literally slaps him into remembering her, spelling her name and smacking him after every letter. It works.
- Put on a Bus: She voluntarily leaves the Doctor and returns home after an incident that makes her believe she can't trust him anymore. Her aunt Pat, whom she first met in 1974, was killed by shapeshifting aliens on their second visit to her and replaced by another, benevolent shapeshifting alien who had been Pat's husband. The Doctor knew this and opted not to tell Lucie, against his better judgment, and she eventually found out. This broke her trust in him, until she ran into him again on a moonbase on Deimos, where she had been abandoned by the Meddling Monk, with whom she'd been traveling. She then spends Christmas with him, Susan, and Susan's son Alex, though rather than resume traveling with him she opts to explore 22nd-century Earth with Alex. He's somewhat amusingly alarmed by that, telling Alex to look after her in one breath, and warning him not to let her teach him any bad habits in the next. She eventually forgives him for the Aunt Pat things... soon before she dies.
- Replacement Goldfish: While separated from Lucie and stuck trying to keep a sun from going supernova, the Doctor creates several successively more complex and lifelike android copies of Lucie to help him, down to her voice and personality. One escapes and goes on a several weeks long journey to find the TARDIS and bring it to the Doctor as part of a plan to help him escape. Another tries to kill him. Repeatedly.
- Shell-Shocked Veteran: Spends two years living through the Dalek occupation. The Doctor is horrified when he sees her picking up a gun and threatening to shoot the Monk.
- Ship Tease: Has a few moments with the Doctor throughout season 3, and with Alex in season 4.
- Sweet Polly Oliver: While undercover in an Irish monastery in "The Book of Kells", she takes on the persona of Brother Lucius.
- Vitriolic Best Buds: With the Doctor. For all they snark at one another, they're self-admittedly each other's best friend. She does accuse him of staring at her bum a lot.
- Why Did It Have to Be Snakes?: She does not enjoy crocodiles... at all. She also has something against jelly due to an incident from her past, though she doesn't elaborate on it.
- You Put the "X" in "XY": In "The Skull of Sobek", she starts seeing strange visions. The Doctor's comment: "You put the Lucie in hallucination."
Oliver Harper (First Doctor)
A stock broker from London in the 1960s (the same time as Ian and Barbara), Oliver starts his day learning the law is after him and starts making plans to run. Then he comes across the Doctor and Steven Taylor, and gets just the opportunity he is after, while making sure that his secret isn't learned... that he's gay. Oliver stands as the first companion to be created exclusively for the Companion Chronicles, and in-universe chronologically, the first LGBT companion.
- Gayngst: He's scared out of his mind at the Doctor and Steven finding out he's gay, as in his time homosexuality was illegal and punishable by death. Of course, neither cares — the Doctor's from another species where gender and sexuality aren't even constructed the same way, and humans from Steven's century haven't cared for a long, long time.
- Heroic Sacrifice: Enacts one to ensure the Doctor and Steven aren't killed by the Vardans.
- Jumped at the Call: The opportunity to travel in the TARDIS appealed with Oliver's very great desire to escape England. He gets that and more.
- Killed Off for Real: Though he does survive as a Virtual Ghost for a good time.
- Living on Borrowed Time: He believed he was on this, since he knew at some point Steven and the Doctor would learn about his sexuality. He calms down considerably when they accept him immediately.
- Sharp-Dressed Man: Due to leaving with the Doctor and Steven with just the clothes on his back, Steven goes through every adventure in a stock broker suit. He even had spares at his flat to lend to Steven for a time.
- Virtual Ghost: Ends up as one due to his Heroic Sacrifice to prevent a Vardan from killing the Doctor and Steven. He ends up caught in the time trail left by the TARDIS, and stays coherent long enough to watch the Doctor regenerate in his TARDIS before properly passing on himself.
- We Hardly Knew Ye: He sadly leaves the TARDIS after only three episodes.
The Marquis Jason de Saint Epiman de Sinee de la Tour (Sixth Doctor)
From the Big Finish version of the stage play The Ultimate Adventure and its Companion Chronicle sequel, "Beyond The Ultimate Adventure". A teenaged French aristocrat, rescued from the French revolution by the Sixth Doctor. Jason's a cheerful and adventurous young man.
Crystal (Sixth Doctor)
From the Big Finish version of the stage play The Ultimate Adventure and its Companion Chronicle sequel, "Beyond The Ultimate Adventure". An up-and-coming nightclub singer who accidentally joins team TARDIS.
- Canon Immigrant: Like Jason, she first appeared in the stage play.
- Career Versus Man: She picks Jason over her career, but he'd have just as easily stayed in the 1980s for her if she'd wanted him to.
- Fish out of Water
- Official Couple: She and Jason get together halfway through the play.
- Smitten Teenage Girl: To Jason.
- That Reminds Me of a Song: Terrance Dicks tried very, very hard to fit the sudden singing into an otherwise (sort of) realistic script. In the end, he just gave up and went with this trope.
- The Thing That Would Not Leave: How she joins team TARDIS to begin with.
- Tomboyish Name: She goes by "Crys".
Thomas Brewster (Fifth and Sixth Doctors)
A Dickensian little git who had the misfortune of getting caught up in the Doctor's life at the tender age of four. Orphaned, abandoned and raised in a workhouse, he never had a chance to get a proper education (let alone love and care from anyone), and inevitably got stuck on the path of villainy. The Doctor, feeling at least partially responsible for Brewster's ruined childhood, comes to see him as a companion eventually and tries his best to make adult Brewster's life somewhat normal again.
- Artful Dodger: After escaping from his abusive boss, he spends a few years as a teenager living the life of a Dickens-style little thief.
- Even Bad Men Love Their Mamas: Well, hypothetical future Stable Time Loop ghosts pretending to be his mama.
- HeelFace Revolving Door: In part due to being somewhat of a Doom Magnet, and in part because being a thief is the only life he knows.
- Ignorant of Their Own Ignorance: He failed to convincingly pose as the Doctor because he didn't know about the Daleks.
- Last-Name Basis: The only person to regularly call him Thomas is Nyssa, despite him repeatedly insisting she call him Brewster instead.
- Love Redeems: He's willing to settle down with Connie and live a normal life. Too bad she gets into a traffic accident soon after.
- The Millstone: Nearly all of the problems the Doctor and Nyssa come up against in Brewster's company are a direct result of his lying, his stealing or his selfishness. The Doctor isn't exactly heartbroken when Brewster elects to stay behind with Connie in 2008.
- Never My Fault: He makes a grudging apology for stealing the TARDIS and selling off much of the contents within, but he is more annoyed than anything when the Doctor doesn't immediately forgive him and says he had "no choice" but to do what he did.
- Nice Job Breaking It, Hero!: In as much as Brewster can be a 'hero', he unwittingly made it harder for the Doctor to set up a life in the twenty-first century; "Lost Property" reveals that Brewster had the property at Baker Street converted into flats before he left, preventing the Eighth Doctor from just taking up residence in the building himself when the TARDIS suffers serious damage and he is basically stuck on Earth.
- Sequel Hook: Last seen ditching Earth altogether to go set up an interstellar company.
- Small Name, Big Ego: He has attempted such scams as claiming that the Doctor gave him the TARDIS to trick old companions or pretending to be the Doctor while trying to act as a gang boss, but he just doesn't have the skill to do it properly.
- Strangled by the Red String: He has one cup of coffee with Connie after accidentally landing in 2008 and after he leaves manipulates the Doctor into taking him back to her, deciding to stay with her only a couple of hours later.
- Token Evil Teammate: Although he makes a few genuine efforts to better himself. The Doctor's companions and friends are more willing to see Brewster's good side than the Doctor himself — Evelyn genuinely wants to help the boy, and Patricia Menzies just sees him as an Ineffectual Sympathetic Villain and runs circles around him intellectually.
Alexander David "Alex" Campbell (Eighth Doctor)
Susan's son and the Doctor's great-grandson. Seems to have taken the whole "Surprise! You're half-alien!" thing quite well after the initial shock, considering Earth was pretty xenophobic while he was growing up.
- Book Dumb: Alex isn't doing especially well in school. Later subverted by "Relative Dimensions", where it's revealed he wants to become an architect and is doing well in college studying architecture. It also helps that he isn't hanging around crowds who want to up-end the education system by this point in his life.
- Half-Human Hybrid: A very rare example of nonhuman Mom, human Dad. Even rarer, Alex isn't genetically half-human and half-Time Lord - the Time Lord part of him only makes up seven percent of genome. As such, he's unable to regenerate, has only one heart and is non-telepathic. The Doctor is equal parts incredulous and disappointed about it despite looking at the test results he just made in "Relative Dimensions".
- Heroic Sacrifice: Alex performed one of these, planning for the Daleks to destroy the very important console he was "trying" to sabotage when they shot him to stop him. It worked.
- It Runs in the Family: Though it takes some time to develop, Alex has quite the eye for details in his surroundings and a desire to travel.
- Tell Me About My Father: Or rather, his great-grandfather, since Alex was old enough to make several memories about his own father.
- Why Couldn't You Be Different?: The Doctor is quite disappointed to discover that Alex lacks several Time Lord traits, such as regeneration and telepathy.
- Wonder Child: Shades of this. Doctor Who media varies on whether or not Time Lords are interfertile; at the very least, human/Time Lord children are unusual enough that Eight asks Susan exactly how she managed it. (She's a bit embarrassed by the question.) Subverted in that, while Alex is clearly bright, he's no Time Lord, and is missing a number of abilities they otherwise have from birth.
Dr. Elizabeth Klein [Restored Universe] (Seventh Doctor)
UNIT's scientific advisor, and the regular-universe counterpart of a very nasty alternate-universe Nazi officer. The Seventh Doctor's been keeping an eye on her just to make sure she's nothing like her alternate self, and she's absolutely not happy about it. But while being similar in temperament to her "other" self, this Klein is far more personable than her former incarnation, and most importantly not evil. For tropes pertaining to the alternate Klein, see her entry under Big Finish Doctor Who Villains.
- Badass Normal: Klein really is not fazed by Daleks, Sontarans, or even Nazis.
- Cosmic Retcon: The end result of a major cosmic retcon. This is treated like a big secret to be kept from her in "UNIT: Dominion", but Klein adapts rather well.
- Dr. Jerk: However, she is trying to improve herself.
- I Know You're Watching Me: "The Umbrella Man" (read: The Seventh Doctor) has been stalking her throughout her life at UNIT. It all turns out to be mostly harmless. Mostly.
- Jerk with a Heart of Gold: Klein's not the warmest of people, but she does make an effort to socialize with her co-workers and she definitely doesn't enjoy people suffering.
- Jumping Off the Slippery Slope: This seemed to happen in "Daleks Among Us", after Klein found out about her birth circumstances.
- Science Hero: She's quite the dab hand with a piece of technology, even keeping up with the Doctor's own contraptions and making use of them. She even learns how to pilot the TARDIS simply by watching Seven, in a rather eerie mirror of her alternate self, though she does have room to learn.
- Timey-Wimey Ball
- Tomato in the Mirror: Discovering about her alternate self was a bit of a shock to say the least. However, given the situation at hand, she moves on admirably from it.
Tamsin Drew (Eighth Doctor)
A failed actress who wants to leave her dreary life on Earth. Travels with the Doctor after Lucie leaves, but never really manages to get along with him. He outright rejects her as a companion when they first meet. Turns out taking her along anyway was a bad idea.
- Canon Immigrant: Mentioned in "The Night of the Doctor".
- Characters as Device: She's simply not suited for TARDIS travel... at least not with the Doctor. Her story line explored what happens when the wrong companion ends up with the wrong Time Lord, and is completely Played for Drama.
- Christmas Cake: As an actress, she's starting to get offered "mom" parts instead of "daughter" parts, and she hates it.
- Genre Blind
- Killed Off for Real
- Locked Out of the Loop: Though she never really bothered to investigate either, and she mistook a Dalek invasion fleet for medical volunteers. What an Idiot!.
- Minion with an F in Evil: To the Monk.
- My God, What Have I Done?
- The Power of Acting: Invoked, but subverted, when the Doctor asks her to infiltrate into a monastery with some Improv. She's dreadful at it, and ends up posing as Maria von Trapp.
- Averted in her debut episode. As part of her audition for the part of the Doctor's companion, she creates the persona of an ambitious, energetic go-getter with the idea that that's the kind of person the Doctor is looking for. It turns out that the Doctor hates her persona and she's the first to be eliminated from the competition. It's only after the screening is done and she fesses up to how she approached it that the Doctor looks at her genuine self with fresh eyes and agrees to take her on.
- Replacement Goldfish: For Lucie. Knows it and hates it.
Mary Godwin (Eighth Doctor)
One of the Eighth Doctor's first companions, long before the regular timeline of the monthlies. Mary Godwin meets the Doctor at Lake Geneva, just before she would go on to write Frankenstein and, soon after, get married and become Mary Shelley. (Although she's already going by her fiancé's name most of the time) She's having difficulties in her relationship with Percy and his friends and jumps at the chance to escape it all for a bit.
- All Girls Want Bad Boys: She likes her men urbane yet wild, which is what attracts her to both Percy Shelley and the Doctor.
- Anachronic Order: Her adventures with young Eight take place mid-way through his travels with Gemma and Samson Griffin, long before those of Charley Pollard and Lucie Miller. This was done to put a bit of a breather between "To The Death" and "Dark Eyes", and to explore what Eight's life was like before "Storm Warning" (and "Terror Firma"). The older Eighth Doctor, whom she encounters first, is straight from the Time War era.
- Anguished Declaration of Love: To Eight, eventually. He just sort of stammers.
- Constantly Curious: She is a would-be science fiction writer, after all. And some of the advanced things she sees would be even more outlandish to her than to the average companion.
- Crazy-Prepared: She may be naive about the realities of time travel, but she does carry a small knife and a number of other useful things with her.
- Deliberate Values Dissonance: She has a bit of a laudanum habit. The Doctor doesn't exactly approve.
- Diary: Keeps one.
- Famed in Story: The Doctor is especially concerned about not getting her killed, having plucked her out just before fame set in.
- Have We Met Yet?: She and the Doctor meet in the wrong order.
- Heroic BSoD: On her first trip, wondering what she was thinking coming to a place she didn't belong.
- The Maiden Name Debate: Whether or not she's using "Shelley" varies several times per episode, depending on how connected she feels to Percy at the time. Her hesitation in this regard is shown especially once she (inevitably) falls head over heels in love with Eight.
- Nightmare Fetishist: Slightly. She's morbidly impressed by some horrifying things.
- Silk Hiding Steel: She's very composed.
- Speculative Fiction: Considered, in story, as the mother of science fiction.
- Sympathy for the Devil: She became friends with a Cyberman. The Doctor later remarks that she tends to "side with the monster." It sets her up for the mindset behind the writing of Frankenstein.
- Wise Beyond Their Years: At eighteen, she's already had two kids and outlived one of them. She's take-charge and maternal and slapped a girl (apparently) her age for her childish insolence.
Amy/Abby (Fifth Doctor)
A living Tracer capable of sensing the various segments of the Key to Time, Amy was given human form by the Grace and tasked with assembling the decaying Key to prevent the destruction of the universe, along with her "sister" Zara. Amy's first decision upon being given life is to recruit the Fifth Doctor to help her in her mission, and she becomes his companion for the "Key 2 Time" trilogy. Originally naive and emotionless, she becomes progressively more human and compassionate across the three stories, largely due to the Doctor's influence. Once their mission is complete, Amy and Zara are freed from the influence of the Grace and allowed to keep living their lives on their own terms, and they lead their own spinoff series, Graceless, which features more adult themes than regular Doctor Who. During this series, Amy changes her name to Abby and strives to always be a good person and do the right thing despite her tendency to be an accidental Walking Disaster Area.
- Aborted Arc: At the conclusion of the "Key 2 Time" trilogy, Romana takes Amy back to Gallifrey to enrol in the Time Lord Academy. By the time the first series of Graceless begins, she has abandoned her Time Lord training to rejoin Zara.
- Addictive Magic: The first time she accesses the power of the Key to Time, she notes with concern how good it feels to use it and feels compelled to keep using it, which is what happened to Zara.
- Bizarre Alien Senses: Her nose tickles whenever she senses a segment of the Key to Time.
- Brought Down to Normal: For a while, she and Zara lose all their powers and grow old together in a seaside village. It doesn't last.
- Cain and Abel: She is the clear Abel to Zara's Cain throughout most of the "Key 2 Time" trilogy, but she and Zara switch between the two roles quite a lot during Graceless, with Zara sometimes being the one trying to talk Abby out of drastic actions that would result in a lot of death and disaster.
- Feel No Pain: Part of her powerset gives her total immunity to pain. When she is tortured by a particularly vicious alien, she tries to be helpful by offering up "oooh, ahh, that... really hurts" to be polite.
- Mama Bear: Though she isn't Joy's true mother, only her aunt, Abby is still fiercely protective of her.
- Moral Event Horizon: In the first series of Graceless, Abby starts down a dark path when she begins regularly abusing her powers to control minds in the Sphere, and goes through one of these when she makes the deliberate decision to destroy the Sphere and all life on board when she and Zara make their escape.
- More Than Mind Control: Abby learns to use her powers to get into people's heads and convince them to do anything she wants. She really goes to town with it in "The Sphere", manipulating everyone in the hotel casinos to win all their money for herself and Zara.
- Nice Job Breaking It, Hero!: A recurring theme in her spinoff is that no matter how hard she and Zara try to do good or save people, most of the time they end up making things worse. By the time she meets the Fifth Doctor again in Wicked Sisters, she has lived for many centuries and accidentally become so renowned as a force of destruction that the Gallifreyan High Council recruits the Doctor to stop her and her sister for good.
- One Steve Limit: In the first series of Graceless' she permanently changes her name to Abby. In-universe this is because she no longer feels like the same person she was when she travelled with the Doctor. In real life this was done to avoid confusion with the Eleventh Doctor's companion Amy Pond, who had been introduced on television in the interim.
- Really 700 Years Old: The four series of Graceless span many centuries, and Abby spends most of that looking like the same young woman as when she was first created.
- Really Was Born Yesterday: The first time she meets the Doctor is at the moment of her creation.
- Sarcasm-Blind: Due to being only a few minutes old when she meets the Doctor, she has zero understanding of sarcasm, but she quickly learns under his "tutelage".
- Set Right What Once Went Wrong: Uniqueley among time travellers in the Whoniverse, Abby and Zara have the power to travel back along their own personal timelines without running into their past selves, and because they both have a tendency to make bad situations worse wherever they go, they end up doing this a lot.
- Vocal Evolution: During her first travels with the Doctor, her voice was high-pitched, breathy and earnest, reflecting her childlike nature. As she matures in her spinoff series, her voice gradually lowers and mellows out.
- Woman in White: The Doctor mentions that she came into being wearing a white dress.
Philippa "Flip" Jackson (Sixth Doctor)
Flip is a supermarket checkout girl, a "late teens, fluffy handbag, Essex girl" hungry for a more exciting life. She's definitely not the sharpest tool in the shed, but incredibly brave and adventurous, and willing to throw herself into any kind of danger just to help people. First meets the Sixth Doctor during a misadventure with Thomas Brewster (see above) and eventually becomes his companion.
- Book Dumb: She failed her driver's test, doesn't know the first thing about history, doesn't speak a word of French, and gets a little bit annoyed at Six's vocabulary.
- Chronic Hero Syndrome: She doesn't get scared easily, and even when she does, she still jumps in with both feet.
- Foil: To Thomas Brewster.Nicholas Briggs has said in behind the scenes interviews that the production team had believed that Brewster had been unpopular as a companion because he was of a lower social class than the other characters, but once they realised that people actually disliked Brewster because he treated the Doctor so terribly, they set out to rectify this mistake with a working class female companion who got along with the Doctor very well indeed.
- Jumped at the Call: Very enthusiastically.
- Nice Girl: She may be a little snarky, but she's tremendously sweet.
- Pop-Cultured Badass:Flip: Well, um, I know that at Waterloo... Napoleon did surrender.
Napoleon: And who told you that, may I ask?
Flip: ... ABBA?
- Plucky Girl: Flip gets kidnapped, mind controlled, turned into a living mud creature and, in only her second adventure, is even briefly killed, but she always bounces right back to her usual perky self.
- Put on a Bus: At the end of "Scavenger", partially out of feeling like she's holding the Doctor back.
- The Bus Came Back: Returns for more adventures at the end of "Quicksilver".
- Temporarily 'on the bus' again in "The End in the Beginning" when the Sixth Doctor segment begins with her in a coma while the Doctor and Constance deal with a threat to the colony where she's being treated.
- The Bus Came Back: Returns for more adventures at the end of "Quicksilver".
- Reckless Sidekick: Her tendency to rush into situations where she knows full well she could get hurt or even killed seriously worries the Doctor and he pleads with her several times to be more cautious. It doesn't really take.
- The Un-Favourite: Both her parents have a clear preference for her younger brother, Phillip.
- Why Couldn't You Be Different?: In "Scavenger", Flip mentioned her parents wanted a boy for a child, and constantly questioned why she wasn't born one. She left when her brother came around, and her parents didn't seem to notice she'd gone. Worse? Her brother's name is Phillip.
Raine Creevy (Seventh Doctor)
Raine was created for Season 27 of Doctor Who before the series' cancellation. (Consequently, we don't know what actor would have played her.) She's a young burglar from a lower-class family who, armed with an affected posh accent and a healthy dose of sarcasm, decides to see what time and space are all about.
- Action Girl: She can wield a fencing foil, sword and axe proficiently, and she takes stressful situations in stride.
- Break the Cutie: A minor, self inflicted version; at the end of "Animal" in 2001, Raine uses a search engine to look up her family. She finds her father is dead by that point in time, and... well, she doesn't take it well. She takes some time off time travel to adjust to it.
- Classy Cat-Burglar: With an expertise in safecracking.
- Commuting on a Bus: She's a rare part-time companion, and drifts in and out of the Doctor's life when she feels like it. In real life, this has turned into rather a Long Bus Trip; Raine hasn't appeared in any stories since 2012 (despite her actress still regularly working for Big Finish in other roles) and is rarely even referred to. When Klein asks after her in "Persuasion", the Doctor simply says that she is "elsewhere", leaving her fate ambiguous.
- Cultured Badass: Though her father was working class, Raine went to a finishing school that groomed her into a more high-class status. She strides in both classes, however.
- Fire-Forged Friends: At first, Raine looks down on Ace for being rather rough and uncultured and initially believes that Ace lacks intelligence, while Ace thinks that Raine is a stuck up snob who overestimates her abilities. After Raine proves her safecracking prowess and Ace saves her life from an alien attack, however, they get on much better; it's even Ace who first suggests that Raine join the TARDIS, which the Doctor agrees with.
- Force and Finesse: She and Ace form this dynamic; Raine prefers to pick locks and sneak into enemy territory, whereas Ace is much more likely to simply blast her way inside. This leads to some initial tension, but they do have a mutual respect for their respective abilities.
- Little Miss Snarker: Especially towards UNIT.
- Rapid Aging: Before she was even born; Raine was barely a bump on her mother in "Thin Ice", at least until her mum was compelled to put on an Ice Warrior helmet that partially, physically transformed her into one of their ancient leaders. This shift affected Raine as well, though fortunately it only accelerated her birth without giving her any Ice Warrior traits, and she came out healthy.
- Recast as a Regular: Beth Chalmers appeared in dozens of Big Finish dramas in minor roles before (and since) being cast as a companion.
- Uncanny Family Resemblance: She looks a lot like her mum, and Beth Chalmers voices both characters.
Lysandra Aristedes (Seventh Doctor)
Sergeant of the Forge from 2020s. She was recruited by the Doctor to the Black TARDIS to battle the Elder Gods.
- A Day in the Limelight: In Companion Chronicles' "Project: Nirvana".
- Badass Normal
- Captain Smooth and Sergeant Rough: With Nimrod. Inverted with Sally Morgan.
- Chess Motifs: Weyland's bishop.
- Deadpan Snarker
- Defector from Decadence: Well, the Forge was hardly decadent, but she defected none the less.
- Fire-Forged Friends: With Sally.
- Have We Met Yet?: Meets Doctor out-of-order in his dealings with the Forge.
- Mistaken for Gods: By Beowulf and his ilk.
- Put on a Bus: She left to help in Africa, after leaving the Doctor's company, wanting to do some good.
- Undying Loyalty: To the Forge.
Sally Morgan (Seventh Doctor)
A soldier from 2020s, Sally met the Doctor during a scientific study to remove fear from the human mind. When she proved loyal, smart and knowing when to obey and disobey orders, she was offered an opportunity to go AWOL. She joined the Black TARDIS team along with Lysandra.
- A Dayinthe Limelight: In Companion Chronicles' "Project: Nirvana".
- Badass Normal: Even when she first met the Doctor, she proved to be more than capable of handling herself against abnormal threats and forces. It's why the Doctor asked her to travel with him, after all.
- Babies Ever After: Has a couple of children with Hex, after the two of them finish traveling in the TARDIS.
- Cosmic Plaything: Her parents were killed and her entire life manipulated by Weyland, as part of his chess game.
- Hair of Gold, Heart of Gold
- Innocent Blue Eyes
- In-Series Nickname: Ace had a few choice names for her, including Sergeant Barbie and Private Benjamin.
- Last Girl Wins: With Hex.
- Raised by Grandparents: Due to her parents passing when she was young, Sally was raised by her grandfather from childhood. He passed on while she was in active duty, however.
- Why Did It Have to Be Snakes??: Her athazagoraphobia was often exploted by various psychic beings.
Dr. Liv Chenka (Seventh and Eighth Doctors)
A medtech from the year 2865, who first meets the Seventh Doctor a few months after the Kaldor sandminer incident and, one Dalek war later, ends up as a companion to the Eighth. Liv is deeply snarky, Genre Savvy and proves to be enough of a stable influence to cope with and support the Eighth Doctor throughout both his darker moments and his Cloud Cuckoolander tendencies. Conceived only as a one-shot character for "Robophobia", Liv proved popular enough with both the producers and the audience that she was retained as a companion for nearly all of the Eighth Doctor's box set stories, and in 2019 began starring in her own spinoff, "The Robots", covering the year she spent on her home planet of Kaldor during the Time Skip in "Ravenous 2".
- Ascended Extra: Though she wasn't exactly a background character, Liv was originally just a secondary character in a Seventh Doctor audio story, "Robophobia". Come Dark Eyes 2, she's a main character and companion. By "The Robots", she's headlining her own boxset.
- Broken Bird: The war with the Dalek Empire leaves her so broken, she ends up fleeing to the literal end of the universe — something she's got in common with Eight at that point.
- The Bus Came Back: One that happened to be the belly of a starship, with some very nasty radiation exposure, all to escape the Daleks. Fortunately, it ends up with her in the Doctor's TARDIS.
- Daddy's Girl: Liv was very closer to her father, and heartbroken by his death.
- Damsel out of Distress: Like many a companion, Liv has a tendency of getting captured. She also has a tendency for giving as good as she gets, when it's expedient. She even manages to take the Master hostage with only a perfume bottle!
- Deadpan Snarker: Liv's default method of communication. At times, her conversations with Eight descend into Snark-to-Snark Combat, which leaves people who don't know them confused as to whether they actually like each other.
- Determinator: Refuses to give up in difficult situations, even when there are very few options left. Best seen in Doom Coaliton 4, where she tells the Doctor and Helen that even being trapped in an escape pod post the destruction of the universe won't stop her trying to make things better.
- Fish out of Temporal Water: Liv takes a while to really get the knack of being a time traveller, especially when in a timezone sufficiently different from her own. By the end of Dark Eyes 4, however, she's gotten a fairly firm grip on things, and rapidly become an Unfazed Everyman.
- Gay Best Friend: Bas. Though Liv herself isn't straight either.
- Good Is Not Soft: Liv is perfectly affable towards most people, but also willing to pull a gun on her enemies when necessary.
- Grand Theft Me: She's not the only one in her body when Eight meets her.
- Healing Factor: During "Day of The Master", thanks to the Eleven reversing the Crucible of Souls, Liv is suffused with regeneration energy, letting her heal lethal wounds without changing her body. By the end of the story, it wears off. Some of it sticks around though - in Stranded 1, when she's shot, Doctors in 2020 London are confused by how quickly she heals. That may also be a result of the intervening centuries of human development.
- Hidden Supplies: By "Companion Piece" in Ravenous 3, she's started carrying around a tool set at all times, just in case.
- Hotblooded: Has a trace of this alongside her Determinator qualities - when she gets worked up about things she has a tendency to rant loudly, and she throws herself into dangerous situations headfirst on a regular basis.
- Human Popsicle: Her body gets frozen during her long voyage on the Sleeper Starship, and her mind is stored on a microchip.
- I Did What I Had to Do: Becomes a willing "traitor" for the Daleks when the Dalek Empire shows up to colonise the planet she's on, just so she can continue to do her job as a doctor.
- I Will Only Slow You Down: A non-lethal variety. Liv has been through tough scrapes, and when a situation calls for the Doctor to leave her behind to escape she can and will push him to do so, if only so that he can get the resources required to rescue her properly. It's saved both their lives, ironically enough.
- Insistent Terminology: She's a Med Tech, not a Doctor, and she's constantly correcting people.
- Letting Her Hair Down: At the start of Dark Eyes 4, she has a day out with a man and gets a chance to be normal. Though she has trouble relaxing, she rather enjoys it and is disappointed when it has to end early.
- Non-Heteronormative Society: Comes from one of these, and doesn't understand why Tania's worried about coming out as trans to her in Stranded 1.
- Oblivious to Love: A recurring theme. Liv had no idea that Martin was in love with her in Dark Eyes 4 though, to be fair to her, from her perspective they'd only just met, whereas he'd been going on their first date for at least several months. For bonus points, Martin is played by Nicola Walker's real-life husband, Barnaby Kay. In Stranded 1, she is again initially completely oblivious to Tania flirting with her, and doesn't realise until she actually asks her out.
- Powered Armor: Suits up in Doom Coalition 2 to fight the Eleven and enjoys it very much.
- Science Hero: Part and parcel with being from an age of spaceships and androids. She actually has trouble adjusting to doing things such as making tea manually.
- Shut Up, Hannibal!: At separate points in Ravenous 4 she holds both the Eleven and the War Master at gunpoint. She receives speeches from both of them about how she doesn't have it in her to pull the trigger. While it works for the Eleven, the Master is very surprised when she shoots him anyway (albeit non-lethally).
- Single Woman Seeks Good Man: Liv doesn't have much luck with men and they don't tend to stick around for long - though not through their own choosing - and she describes herself to her sister as still being a romantic, even after these experiences. She's had more luck (so far) when dating Tania, a woman, in Stranded 1.
- Space Clothes: She follows the eccentric Kaldor fashion and makeup trends before getting caught up in the Dalek war. She slowly adjusts to more practical garb after she joins the Doctor, going hand-in-hand with her Character Development. By the time she returns to Kaldor in The Robots, her sister tells her she sticks out in her hometown for walking around everywhere wearing hoodies.
- Sugar-and-Ice Personality: Liv has elements of this. She's incredibly sarcastic and her medical work required to develop a hard outer shell, but once she warms up to someone she's kind and supportive. Over time travelling with the Doctor, she begins to lose the 'ice' side.
- Survivor Guilt: Surviving, and escaping, the Daleks left her with quite a bit of it, enough so that she went on an expedition to literally the edge of the universe.
- The Masquerade Will Kill Your Dating Life: This comes into play in her relationship with Tania in Stranded. After Stranded 1, Liv is free to tell her girlfriend the truth about her travels with the Doctor, but Tania still can't tell her about Torchwood or her own work. It puts a strain on their relationship.
- True Companions: Liv considers Eight and Helen to be family by Ravenous 2.
- Virtual Ghost: In an especially bizarre example of the trope, someone else's Virtual Ghost gets copied onto her memory chip, allowing that person to occasionally wake up her body from cryosleep and sabotage the ship without her realising it.
- What the Hell, Hero?: She gives several of these to the Doctor. She gives one to the Doctor in Dark Eyes 4 for leaving behind all the collateral damage in order to find his stolen TARDIS. They both give good arguments for their respective cases. She also doesn't appreciate the times he's made deals with the Daleks, whether or not he has any choice in the matter. She gives another one in Doom Coalition 4 when he tries to convince her to accept their fate and live with the guilt of accidentally causing the deaths of everyone in the universe. That time, he acknowledges that she's right to fight on. Finally, she issues him with one in Ravenous 2, when he can't decide whether to trust Helen or not. Liv points out that their friend attempted to sacrifice herself to save the universe, and he takes her point.
- Your Days Are Numbered: Due to having run away from the Dalek Empire under very unhealthy conditions. The Master reveals in Dark Eyes 3 that exposure to his strands of retrogenitor particles have cured her of the affliction, however.
Hannah Bartholemew (Fifth Doctor)
An adventuress from the early 20th century who has an interest in the occult, Hannah meets the Doctor and Nyssa at a private hunt in Suffolk before an alien sentience starts possessing people and animals. Unlike most of the few Big Finish original companions in that she travels with the Fifth Doctor while he had one of his TV companions, this time with Nyssa.
- Action Girl: She is very far from being shy with her shotgun, and is eager to join the fray to assist those she likes. She was also quite at home in a death-trap of a tombship, even if she was out of her league when it came to the technology.
- Big Damn Heroes: In "Tomb Ship"; despite the Doctor's squeamishness regarding guns and killing, her shotgun proves quite useful in dealing with the homicidal and virtually mindless aliens attempting to tear them limb from limb in an already deadly ship, and she turns up out of nowhere to save the others with some well-timed shots.
- Butch Lesbian: Sort of; her masculine habits, combined with the Word of Gay below, plausibly make her this.
- Death of Personality: In a heroic sacrifice to prevent a group of aliens from infiltrating the minds of a shady research facility, Hannah collapses an artificial reality upon herself, the scientists and the infiltrating aliens, removing her emotional mind and exuberance. Only her philosophy of the Order of the Crescent remains, aside from her memories. Unusually for this trope, Hannah recognizes she's unfit for travel in the TARDIS and requests to be left behind, where she may provide some good.
- I Will Only Slow You Down: When Hannah's emotional side is removed in "Masquerade", she insists that the Doctor and Nyssa leave her behind, turning down every offer for help in favor of providing assistance where she is.
- Jumped at the Call: Hannah is fascinated and excited at the concept of the TARDIS, isn't at all perturbed when she accidentally stowed away on it, and is outright disapointed when told that the Doctor was going to take her back to her own time, though she doesn't make a fuss. She perks up when she learns of the TARDIS's tendency of going anywhere but where the Doctor sets her to though.
- One of the Boys: Hannah dresses like a man, eagerly takes part in traditionally "manly" pursuits, such as hunting and drinking strong liquor, and takes offence at being brushed off as one of the "ladies". She also has a hard time sticking with formalities, preferring to just be called Hannah (though she does insist on "ms" over "miss" if it comes to that). Humorously averted in "Masquerade", when she takes on the mindset of an Edwardian governess for a time.
- Reincarnation: She effectively believes in this as a member of the Order of the Crescent Moon, where those departed become shadows that guide those "in the light", until they too come back to life and hope to be guided in turn by those in the shadows. She's apparently believed this for most of her life too.
- Screw This, I'm Out of Here!: When the carriage she's leading is being attacked by a possessed elephant, she has the sense to jump ship while she can, even if it means leaving behind a disabled man who'd bought her reluctant help with the promise of a thousand pounds. She's not happy about it though, no matter how unpleasant he was.
- We Hardly Knew Ye: Only appeared in two and a half stories ("Moonflesh" and "Masquerade" throughout and the last half of "Tomb Ship") before definitively leaving the TARDIS.
- Word of Gay: More implied, but the special features of "Moonflesh" point out that during the turn of the century in Boston, a lesbian movement took to being refereed to as "ms" rather than "miss". This particular habit being something Hannah insists on, the production team ran under the train of thought that Hannah had just come back from Boston during that particular period under that "particular persuasion".
Mary "Molly" O'Sullivan, later Mary Carter (Eighth Doctor)
An Irish medical volunteer, working in France during World War I. She encounters the Doctor when he's rather suddenly found dying on the battlefield, and is quickly roped up in a full-scale Dalek invasion.
- Badass Normal: Just a normal human, yet she tries to smack an Eldritch Abomination with a rolling pin, and walks into an impending explosion, knowing that it was the only way to safely defeat the Dalek Time Controller. She dies smiling.
- Berserk Button: Being called "Dark Eyes", especially once she figures out that it's more than just a nickname.
- Boisterous Bruiser: She punches Eight in the face.
- Bound and Gagged: In "The White Room".
- Brainwashed and Crazy: Spends most of "Dark Eyes 3" drugged to the gills and mind controlled.
- Broken Bird: Though healing well by 1918.
- Buffy Speak: A very rare example of The Stoic being fond of Buffy Speak, since she defaults to it even in stressful situations.
- Canon Immigrant: Mentioned in "The Night of the Doctor".
- Demoted to Extra: In "Dark Eyes 3", due to scheduling conflicts Ruth Bradley had from a movie deal. She eventually appears played by another actress in "Dark Eyes 4", explained in-story as Molly being now in her sixties.
- Eye Tropes: She's got the titular dark eyes: perfectly black irises. She hates that they keep coming back.
- Face Death with Dignity: Knowing that the Dalek Time Controller was tied to her own life, Molly calmly walks into an explosion, ending her life on her own terms. She dies smiling, even when she's pulled out of the rubble.
- Famous Last Words: "The high and mighty Doctor! Thinks he's in charge as always does he? Look at me, you're not sacrificing anyone, I've decide for myself! You look after Liv now. Youre the Doctor, make people better!"
- Fish out of Temporal Water: She adapts quickly, but she much prefers her own time.
- Heroic Sacrifice: Attempts one in "Dark Eyes", but the Doctor ensures it doesn't go through. Pulls off a rather more successful one at the end of "Dark Eyes 4", to ensure the Dalek Time Controller ends with her. Even when Liv and the Doctor pull her out of the rubble, she's still smiling.
- Hiding in Plain Sight: Manages to escape Dalek notice by simply changing her name and staying out of trouble.
- Hospital Hottie: Though absolutely not in the mood to be one at first. She's fully aware that her being a sexy Hospital Hottie would only make things worse for the wounded soldiers, who have enough on their minds already. Also, at the start of her story she's full of nits anyway, and hasn't had a change of clothes (or a bath) in two weeks. Near the end of the war, she continues working as a nurse in London, and She Cleans Up Nicely.
- Insistent Terminology: "Tardy box".
- Letting Her Hair Down: When the war ends, she decides to treat herself to a vacation as the Doctor's companion, and mellows out a bit.
- Living MacGuffin: Throughout "Dark Eyes" and its sequels, Molly is sought out for some nefarious scheme or another. She adjusts to it fairly well by the third time.
- Malaproper: She consistently refers to any TARDIS she comes across as a "Tardy Box", with few exceptions. Though it was initially a mocking name, it slowly became something of an affectionate nickname. The Doctor's TARDIS didn't appreciate it much. She mostly drops it after forty years.
- Meaningful Name: When she starts mocking the Doctor's name, he informs her that her own name means "small fish dark-eyed". The nickname "Dark Eyes" sticks, although she's not too happy with it.
- My Country, Right or Wrong: Averted. She's horrified when she finds out that a man she's being treating is a member of the IRA ever since the failed Easter Rising.
- Put on a Bus: Because of the retro-genitor particles still inside her, Narvin takes her back to her own time to keep her safe from harm.
- Replacement Goldfish: Like Tamsin, she's a Replacement Goldfish for Lucie Miller. And like Tamsin, she's nowhere near willing to deal with Eight's emotional problems. However, things mellow out between them.
- Ripple Effect-Proof Memory: Ends up with one.
- Romantic Two-Girl Friendship: With Kitty, the lady she worked for. Entirely Played for Drama.
- Shell-Shocked Veteran: Has deliberately stopped making friends to avoid getting even more emotionally damaged.
- The Slow Path: Several times — the final time the Doctor meets her, she's in her 60s, and has spent forty years living in an alternate timeline under Dalek occupation.
- Spell My Name with a "The": She doesn't have time to put up with the Doctor, and she mocks him by addressing him as "The Doctor". This habit slowly drops the closer she comes to him, although she never truly stops the name.
- The Stoic: Doesn't ever let her emotions get out of hand.
- Sugar-and-Ice Personality: She's extremely harsh and self-reliant, and has taught herself to ignore her emotions; but she's definitely The Heart, and the reason she continues fighting is to save people no matter the cost.
- Survivor Guilt: Ohh boy. Once Eight realises she has just as much Survivor Guilt as he does, they start to bond over it a little.
- We ARE Struggling Together: In spite of the constant danger the TARDIS brings her, this is what helps Molly adjust and warm up to the Doctor.
Hector Thomas (Seventh Doctor)
On New Year's Eve in the 2020s, Hector Thomas found himself in a parking lot. Out of jail and wanting to make a name for himself, he began an empire of restaurants, clubs and other businesses. Trouble was, he began to run into the Finnegans, a three-family group who were not only buying out other clubs, but had an odd tendency of not dying out...
- Darker and Grittier: Compared to Hex - whereas Hex would back away from any kind of killing, Hector has had many a Finnegan cut down, and it's implied he was fairly aggressive in getting to where he was. Both Hex and Hector have had a thing for Ace at the start too. However, while Hex came down gradually from his crush, Hector... pushed the line a bit in his first outing. (Ace was clearly grieving for a lost friend whom Hector reminded her of, but Hector was fairly quick to invite her to his flat and do a bit of kissing. Fortunately, the mood changes and things don't progress any further into Squick territory.)
- However, this turns out to be part of the persona inserted into Hex's head when Koloon brought him back to life. He lightens up considerably the further along he comes past what was to be his expiration date.
- The Don: The crimes Hector and his men commit onscreen are least stealing high-tech and foreign weaponry, property damage, and many murders of the Finnegans. The same Finnegans, in fact, to the point he's getting creative with how they're killed and where they're dumped. It was also mentioned that the first club he came to own had an owner that suddenly went missing, although it's ambiguous if it was his or Koloon's work.
- A God Am I: Though he initially takes up the guise of Dionysos for a benign purpose in "The Mask of Tragedy", utilizing an alien psychic mask, the damaged mask gives him this impression of himself. It goes badly for him.
- HeelFace Turn: In a sense. In his first story, Hector starts thinking of ending conflicts with the Finnegans and just settling with being a business owner. His time on the TARDIS shows that, while he is still a bit gritty, he genuinely wants to do good and finds the constant death around him abhorrent, far from the gangster he was before. Even he recognizes the changes he's going through come "Signs and Wonders".
- Identical Stranger: He looks and sounds exactly like Hex, save a slightly different accent. Their personalities are completely different however. That's because he is Hex, but with a personality built from a life in a book.
- I Just Want to Be Normal: The memories of his old life fading away, and Ace's constant attempts to jog his memory, make him want to just settle down and make new memories he knows are his own. He gets his wish, and then some.
- Loss of Identity: Happens to Hex when Lily Finnegan smashes the bottle holding his memories and self, leaving him as Hector from then on. The Doctor doesn't take it kindly. Ace tries to get around that, though Hector doesn't appreciate it.
- Hector himself goes through this the longer he lives, his old memories becoming indistinct and difficult to tell if real or not to him.
- Mind Rape: Is the unfortunate and constant subject of this, helped in no part from having a great hunk of his past removed from his mind. From being possessed by the Swarm, being torn into by digital prawns, to being given delusions of grandeur by a mind-affecting mask, Hector's mind comes under a lot of abuse.
- Split-Personality Merge: With Hex, courtesy of Ginny Greenteeth. Hex comes out as the dominant part of the personalities, effectively reviving him from the dead.
- That Man Is Dead: Though he recognizes he won't be able to measure up to Hex in Ace's eyes and that Hex was a good man, Hector is quite fine with being the man he is. However, he doesn't appreciate being constantly compared to Hex in a negative light, nor attempts to jog Hex's memories in his head.
- Unfazed Everyman: It takes a lot to faze Hector after he starts traveling in the TARDIS.
- Send Me Back: That said, he doesn't really adapt to adventures in the TARDIS very well.
- What the Hell, Hero?: Has this reaction towards Ace and Seven every so often when confronted with the death and manipulation that follows them around. It simply rubs him the wrong way at how aloof they seem to treat their adventures.
- Your Days Are Numbered: He originally supposed to live for a single year, from New Year's to New Year's. However, nobody could have foreseen that Ace would give Hector a trip in the TARDIS....
Constance Clarke (Sixth Doctor)
Member of Women's Royal Naval Service from World War II.
- Action Girl: The Doctor notes that she "tends to save people", something that served her well in the wartime.
- Alliterative Name: Constance Clarke.
- Berserk Button: When she finally meets Henry and learns about his new life, she is so outraged that she began verbally attacking the woman Henry was with before being informed that Flip was actually a friend of the Doctor's who'd only just met Henry Clarke.
- Braids of Action: Goes from 1940s hair to one long braid, as evidenced by the covers.
- Chekhov M.I.A.: Constance constantly worries about her husband, a spy in deep cover behind enemy lines. After a particularly long absence of messages from him, she starts asking everyone who may know something about whether he is dead or not. Nobody gives her a straight answer on the subject. When it turns out that her husband has been sending her messages, ones that her superiors have been denying her, Constance decides to leave with the Doctor.
- Cloning Blues: She dies choking on the fumes from a fire during the events of "Static" but the Doctor manipulates events so that she's plucked out of time in the moment before her death and her consciousness transferred into a clone before sending her original body back into the fire to die along with the Eldritch Abomination trapped inside it.
- Mama Bear: Though not a mother, Constance is very protective of the Wrens under her guidance, and does not enjoy seeing them mistreated.
- Science Hero: A more moderate one, but she's fairly familiar with a number of complicated scientific concepts as part of her work in World War II, including parallel realities.
- Unfazed Everyman: Constance is a very difficult woman to shake, even when presented with places and concepts that are well away from what she would have experienced in the 1940s. Even when she is shaken, though, she recovers quickly.
Helen Sinclair (Eighth Doctor)
A classical linguist from 1963. Meets the Doctor, accidentally gets blamed for the biggest museum heist in modern times in the process, and runs away with him.
- Abusive Parents: Helen's father constantly disparaged her and her achievements, and when she finds out he's died believing she ruined the family name, she can't bring herself to feel sad about it.
- Beware the Nice Ones: She's very polite, kind and well mannered, but she's also willing to scream at her boss for slighting her and fly a TARDIS into the Resonance Engine to save the universe.
- Character Development: In "Doom Coalition" Liv repeatedly has to tell the Doctor not to rude to Helen. By "Stranded", Helen is confident enough to call the Doctor out on his inappropriate behaviour without Liv having to intervene.
- Dance Off: Liv and Helen have at least one in the TARDIS's games arcade between adventures.
- Deliberate Values Dissonance: The amount of discrimination she faces as a gay scholar in the 60s has left her frustrated with the world, and she's very glad to discover that her new friends in the TARDIS aren't as close-minded.
- Fangirl: Helen is a huge fan of the Grimm brothers, and audibly extremely excited to meet them in "Ravenous 3".
- Hair of Gold, Heart of Gold: She has blonde hair in the boxset covers, and is an extremely kind and considerate person.
- Heroic Sacrifice: Helen attempts this at the end of "Doom Coalition 4" by flying herself into the crucible of souls, managing to both save the universe and miraculously survive. She later tries it again in "Ravenous 2" by spending a lifetime learning to fly the TARDIS before dying of old age, this time being saved by Liv using a wish to bring her friend back.
- I Have No Son!: Helen's father disowned her brother Albie for being gay at some point before 1963, and it's implied that she never came out to her family for fear he would do the same to her.
- Internal Homage: Helen is based on Who producer Verity Lambert.
- I Want My Beloved to Be Happy: Helen's attitude to Liv and Tania's relationship. Though it's unclear whether Helen would have actively pursued a *romantic* relationship with Liv, she does say that she's her closest friend in the universe and it's heavily implied that, had she not been raised in a deeply homophobic environment, she would have done.
- Lady And A Scholar: Kind, polite, socially adept, and in love with her work.
- Like Brother and Sister: This is her relationship with the Eighth Doctor they consider each other family by the end of "Ravenous 4".
- Morality Pet: Briefly serves as this for the Eleven when they're both trapped in a prison, Helen hoping that the Eleven can be a good man when he has no opportunities to conquer. It actually works to a degree, as the Eleven notes at one point that only three of his personalities still want her dead even after he reverts to type.
- My God, What Have I Done?: Has this when she tries to visit her family in the 1990s and learns what her disappearance did to their lives. Worse, she does so against the Doctor's advice and comes to find out that the mere act of her visit creates a Stable Time Loop that locks the changes to her timeline into place.
- Rage Breaking Point: Her introduction in "Doom Coalition 1" has her shouting at the man who's denied her a promotion for being a woman, describing the discrimination which has brought her to this point.
- Stay in the Kitchen: What she deals with in her museum before meeting the Doctor. Despite her qualifications, she is passed up for promotion in favour of a younger, less experienced male colleague. When she brings this up with her mentor, he not-so subtly tries to sway her to look at getting married and starting a family. After all she's in her mid 20s; practically an old maid.
- You Can't Go Home Again: She tries, and ends up ruining what was left of her chances.
Ann Kelso (Fourth Doctor)
The first original Big Finish companion for the Fourth Doctor, Ann is a WPC in 1970s London who meets the Doctor whilst he is investigating an alien assassination attempt. This Character is a Walking Spoiler, so edit carefully. Ann is in fact a cover identity for Space Security Services agent Anya Kingdom, for tropes relating to Anya, see the following folder.
- Action Girl: A former police officer.
- Death of Personality: Anya's remanifestation effectively kills Ann's personality, and there is no way of getting Ann back.
- Flat Character: As a way of playing on the way the Doctor has companions, Ann is fairly basic, with a few hidden depths but not many. but of course, this in a way was foreshadowing for Anya's reveal. It makes sense for Ann to be a sort of basic personality.
- Good Cop: Amiable and well meaning.
- Loss of Identity: Ann Kelso is actually a cover identity for Space Security Services agent Anya Kingdom, and once Anya's identity is restored Ann is effectively dead.
- Manchurian Agent: While travelling with the Doctor, Ann will occasionally revert to Anya Kingdom's identity to deal with things in a more permanent manner than the Doctor would approve of.
- Applies on more than the obvious level, as even Anya Kingdom has been 'programmed' to think of the Doctor as an enemy.
- That Man Is Dead: While Anya still retains Ann's memories, the Doctor and K9 each consider Ann to be gone after they learn the truth about Anya.
- Recast as a Regular: Jane Slavin had appeared in many minor roles in other Big Finish audios, particularly in Tom Baker stories.note Their acting chemistry partially led to the creation of Ann.
- Unfazed Everyman: When Ann learns of the existence of aliens, her priority is still protecting a witness even though she's protecting him from aliens from the future (Subverted as Ann was specifically programmed to go with the Doctor).
- Walking Spoiler: You can probably tell by all these examples, huh. Ann's character is completely overshadowed by her twist.
Anya Kingdom (Tenth Doctor)
Secret Agent Anya Kingdom returns in Dalek Universe, investigating a downed spaceship crash, and encounters the Doctor once more, wearing a new face.
- Walking Spoiler: She's the biggest twist in the Fourth Doctor Adventures, but that doesn't stop her from showing up in Dalek Universe without any warning.
- The Ace: On par with android Mark Seven, Anya possesses incredible strength and athleticism, even taking on invisible monsters with a laser gun. Her reputation reflects this, as she's so good, not even her leader for the mission is allowed to know who she is.
- Manchurian Agent: While obviously having done this as Ann, Anya manages to do this yet again, because her boss while investigating the spaceship is unaware of her true rank.
- Wolf in Sheep's Clothing: The Tenth Doctor says that while he trusts military leader Esther not to kidnap him, he doesn't think it would be above Anya. She doesn't deny it.
- Took a Level in Badass: While Ann was a proficient police officer, she wasn't at a "fighting invisible monsters with a gun that shouldn't work against them and winning" level.
Marc (Fifth Doctor)
A Roman slave from the year 63 BC in the service of Cicero, Marc is freed by his master after his adventure with the Doctor, Nyssa and Tegan and becomes their companion.
- The Ace: Despite his relatively lowly status as a slave, Marc is incredibly athletic, intelligent and intuitive, easily outpacing his companions in the Warzone obstacle course and proving himself a skilled enough navigator in Tartarus to help track down three keys. He has also secretly taught himself to read and write, something forbidden to slaves in his time.
- Broken Ace: After his quest for fame and glory in "Warzone" directly leads to his almost being killed and then partially converted into a Cyberman, he is left traumatized and bitter.
- Cyborg: After managing to fight off the Cybermen's mental conditioning in "Conversion", he is left with the physical upgrades they provided to him.
- Distressed Dude: Spends almost the entirety of "Conversion" Strapped to an Operating Table until his friends can rescue him.
- Fish out of Temporal Water: Even more so than most companions, since Marc is from far enough in the past that electricity has not been invented yet, not to speak of things like female emancipation. He is awed by things we consider commonplace, like sliding doors, and he is mystified by words like "energy".
- Glory Hound: In "Warzone", Marc sees the titular obstacle course as his opportunity to become as celebrated as the gladiators of his home time, and throws himself into it with gusto. It does not end well.
- Happiness in Slavery: Though Marc had wondered what life might be like if he were not a slave, the fact that Cicero is a kind and generous master means that Marc's life is not a miserable one, and he was fairly content with his station in life. When Cicero frees him and gives his blessing for him to travel with The Doctor, Marc is genuinely sad to leave his old life behind.
- Odd Friendship: With Tegan, who is outspoken, combative and independent, the exact opposite of the ladies Marc is used to in Rome. She puts up with precisely none of his humble deference, and eventually he starts snarking right back at her and they get along much better.
- Only Known by Their Nickname: His full name is Marcipor, but that is never used again after his debut story.
- Prefers Rocks to Pillows: As a slave from an ancient society, Marc takes some time to adjust to future concepts, and the plush, modern beds of the TARDIS are a bit much for him. He sleeps on the floor in his TARDIS bedroom, claiming it's the only way he can actually get any sleep.
- Replacement Goldfish: Even though he's really nothing like Adric, the fact that Marc is young and naive as well as the Doctor's first male companion since Thomas Brewster does bring out the Doctor's nurturing, teacherly side. Whenever Marc is in danger, the Doctor frequently overreacts out of fear that he will lose another companion the way he lost Adric.
- Spear Counterpart: In a lot of ways, Marc is a male version of Katarina, both of them being downtrodden servants of ancient Earth societies who end up travelling with the Doctor. Where Katarina was permanently frightened and out of her depth, however, Marc proves himself adept and capable enough of adjusting to the unfamiliar worlds he finds himself in.
A few other characters have been introduced who, while not technically companions, meet the Doctor on occasion:
DI Patricia Menzies
A Mancunian detective-inspector who keeps encountering the Sixth Doctor.
- Have We Met Yet?: She and Six meet in the wrong order- Patricia first meets the Doctor in "The Condemned" as he starts travelling with Charley and the Doctor first meets her in "The Crimes of Thomas Brewster" while he's travelling with Evelyn- and realizing the implications for the Web of Time, they both decide to keep it a secret from each other.
- Bavarian Fire Drill: She spends a large chunk of one adventure pretending to be the Doctor's next regeneration.
- Deadpan Snarker: Seriously.
- Great Detective: She's really very good at her job.
- Oop North: From Manchester.
- Nerves of Steel: She pretty much treats the Doctor's adventures as just another day at work.
- Reasonable Authority Figure: She's very willing to listen to the Doctor's story, once she figures out that he's telling the truth.
- Unfazed Everyman: She grasps the basics of time and space travel very quickly, and doesn't let it keep her from getting the job done. She even starts policing the aliens among us because she knows they can't go knocking on the door of regular authorities. Pro bono.
After the events of Ravenous the TARDIS crew find themselves stranded on contemporary Earth where the Doctor finds himself the unwitting landlord of 107 Baker Street. (Which has been broken into flats without his knowledge.)