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                  - Susan, Ian, Barbara, Vicki, Steven, Katarina, Sara, Dodo 2 - Polly, Ben, Jamie, Victoria, Zoe
 3 - The Brigadier, Liz, Sgt. Benton, Jo, Captain Yates
 4 - Sarah Jane, Harry, Leela, K-9, Romana, Adric
 5 - 
                  Nyssa, Tegan, Turlough, Kamelion, Peri, Mel, Ace
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          | Nyssa |  
          | Arrival: The Keeper of Traken | Departure: Terminus |  
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  Nyssa was the daughter of Tremas, one of the 
            Consuls of Traken. She helped The Fourth Doctor and Adric in their 
            apparent victory against The Master, but learned soon after being 
            brought to Logopolis by the mysterious Watcher that the villain had 
            saved himself by taking over her father's body (The Keeper of 
            Traken, Logopolis). She was the first of The Doctor's 
            companions to realize that the Watcher was a future projection of 
            The Fifth Doctor, and aided the Time Lord's new persona in another 
            battle against The Master (Castrovalva). Orphaned, and with 
            her homeworld destroyed by the renegade, she chose to remain with 
            The Fifth Doctor for a series of adventures which included a meeting 
            with her double, Ann Talbot, on 1925 Earth (Black Orchid), 
            and a visit to Gallifrey in which she bravely attempted to prevent 
            The Doctor from being executed by the High Council (Arc of 
            Infinity). Her finest hour came in her last adventure, when she 
            chose to remain on the space station Terminus and use her scientific 
            abilities to find a cure for the dreaded Lazar's Disease 
            (Terminus). 
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          | Tegan Jovanka |  
          | Arrival: Logopolis | Departure: Resurrection of the Daleks |  
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  Tegan was an Australian who was on her way to 
            Heathrow Airport to begin a job as an airline stewardess when she 
            and her Aunt Vanessa had a flat tire. Tegan entered the TARDIS, 
            believing it to be a police box, and was inadvertently taken to 
            Logopolis by The Fourth Doctor. Despite her grief at the murder of 
            her aunt by The Master, she proved to be a capable ally during the 
            crisis of The Doctor's regeneration (Logopolis, 
            Castrovalva). With the crisis past, however, she wanted to be 
            returned to Earth as soon as possible, and many of her early 
            adventures with The Doctor were the result of his inability to steer 
            the TARDIS back to her own time. During an adventure on the Kinda 
            homeworld she was possessed by the Mara, an evil being which used 
            her to cross into the real world, and whose hold wasn't completely 
            broken until a later adventure on the planet Manussa (Kinda, 
            Snakedance). Between these adventures, though, she was 
            finally returned home, only to find that she had lost her job, and 
            was happy to rejoin The Doctor and Nyssa following their battle 
            against Omega (Arc of Infinity). She was initially 
            suspicious, with good reason, of their new companion Turlough, but 
            had made her peace with him by the time of The Doctor's encounter 
            with his earlier selves in Gallifrey's Death Zone (The Five 
            Doctors). Tegan stayed with The Doctor for several more 
            adventures, but left abruptly after the bloody events of the latest 
            battle in his ongoing struggle with the Daleks (Resurrection of 
            the Daleks). 
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          | Turlough |  
          | Arrival: Mawdryn Undead | Departure: Planet of Fire |  
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  Vislor Turlough was a political exile from 
            the planet Trion, sentenced to spend his days on Earth in the 
            English public school at which the retired Brigadier 
            Lethbridge-Stewart was a teacher. He was recruited by the Black 
            Guardian, who was seeking revenge against The Doctor. Over the 
            course of three adventures, Turlough came to realize that The Doctor 
            was a good man, and ultimately chose to reject the Guardian and 
            remain with The Doctor (Enlightenment). Turlough, while a bit 
            devious and underhanded, was a capable companion, providing a 
            valuable clue in The Doctor's encounter with the Tractators 
            (Frontios), acquitting himself bravely against the Daleks, 
            and saving the life of Peri Brown (Planet of Fire). During 
            this adventure, Turlough was reunited with his brother Malkon, and 
            chose to return home to Trion after learning that his family's 
            political crimes had been pardoned. 
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          | Kamelion |  
          | Arrival: The King's Demons | Death: Planet of Fire |  
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  Kamelion was a shape-shifting android 
            which helped The Master escape from the planet Xeriphas. The villain 
            used Kamelion, in the guise of King John, in an attempt to alter 
            English history (The King's Demons), but was thwarted by The 
            Doctor, who took the android with him. Kamelion spent most of his 
            time exploring the TARDIS and learning about its systems. He had a 
            mind of his own, but could be controlled by a superior intellect. 
            Sadly, The Master regained control of Kamelion and used him in 
            another of his convoluted schemes. Kamelion, who realized that his 
            inability to prevent himself from being used was a constant source 
            of danger, asked The Doctor to kill him, and the Time Lord 
            reluctantly complied (Planet of Fire). 
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          | Peri Brown |  
          | Arrival: Planet of Fire | Departure: The Trial of a Time Lord |  
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  Perpugilliam Brown was an American botany student 
            who became swept up in an adventure with The Doctor and Turlough 
            during her summer vacation. She helped them against The Master, and 
            stayed with The Doctor after Turlough's departure (Planet of 
            Fire). Peri nearly died of spectrox poisoning while a prisoner 
            of the demented Sharez Jek, but was rescued by The Doctor, who 
            valiantly sacrificed himself so that she could have the antidote 
            (The Caves of Androzani). To her, and his surprise, The 
            Doctor regenerated into a new form, and for a while it seemed that 
            the unstable Sixth Doctor would be as great a menace to Peri as the 
            villains she'd already faced (The Twin Dilemma). As The 
            Doctor settled down, he and Peri became an excellent team, although 
            his personality quirks continually surprised her. Peri seemed to 
            spend an inordinate amount of time as an object of desire for the 
            villains they encountered, whose appetites ranged from the carnal 
            (Caves, Dilemma, and Timelash) to the 
            carnivorous (The Two Doctors). Following a series of 
            adventures which included a run-in with the alien businessman Sil, a 
            rematch with The Master, and a meeting with The Second Doctor and 
            Jamie, she and The Doctor became involved in another encounter with 
            Sil, whose people were funding experiments in brain transfer. The 
            precise details of this adventure are a subject of some debate, 
            since the only available information, recordings from the Time Lord 
            Matrix, were tampered with by The Valeyard, who was, allegedly, a 
            projection of The Doctor's evil impulses. The recordings shown 
            during The Doctor's trial indicated that Peri's body was used to 
            house the brain of Sil's employer Kiv, who was then killed by the 
            alien warlord Yrcanos, a puppet of the Time Lords. Later testimony 
            by The Master revealed that Peri survived to become Yrcanos's queen, 
            and since, for all his faults, The Master seemed to admire Peri's 
            spirit and determination, it seems likely that this was Peri's true 
            fate (The Trial of a Time 
            Lord). 
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          | Melanie Bush |  
          | Arrival: Unrecorded Adventure | Departure: Dragonfire |  
          | 
  Melanie, usually called Mel, was a computer 
            programmer from Pease Pottage whose first encounter with The Doctor 
            (from her viewpoint) is unrecorded. The Doctor's first glimpse of 
            Mel (from his viewpoint) was in a Matrix projection of a future 
            adventure in which they battled the Vervoids, an artificial 
            plant-based lifeform. After The Valeyard used this as evidence 
            against The Doctor in his trial, Mel, along with Sabalom Glitz, an 
            alien rogue who'd had a run-in with The Doctor and Peri, were 
            captured by The Master and produced as witnesses in The Doctor's 
            behalf. After the trial ended Mel departed with The Doctor, who 
            returned her to her own timeline (presumably avoiding an encounter 
            with his future self). Eventually, The Doctor met Mel for the first 
            time (from her viewpoint), and they shared a series of adventures, 
            including the one with the Vervoids, before he regenerated into his 
            seventh persona (Time and The Rani). After accompanying The 
            Seventh Doctor through his first four adventures, Mel chose to 
            remain behind on Iceworld to keep an eye on their old friend Sabalom 
            Glitz (Dragonfire). 
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          | Ace |  
          | Arrival: Dragonfire | Departure: Unrecorded Adventure |  
          | 
  Ace was a rebellious teenager from Perivale who was 
            swept up by a timestorm and deposited on Iceworld, where she met 
            Sabalom Glitz, Mel, and The Seventh Doctor (Dragonfire). Ace, 
            whose real name was Dorothy, was a budding young anarchist with a 
            talent for making explosives, most notably the notoriously-unstable 
            Nitro 9. She adored The Doctor, whom she usually called Professor, 
            and was of great help to him in a variety of battles including 
            encounters with the Daleks and Cybermen. The Brig, who met her 
            during a struggle with the alien sorceress Morgaine, was impressed 
            enough with her to concede that she was capable of looking after The 
            Doctor (Battlefield). The Doctor put Ace through a series of 
            tests designed to make her face her fears and inadequacies, and they 
            eventually learned that she had been deliberately sent to Iceworld 
            as a pawn of one of his most ancient enemies (The Curse of 
            Fenric). With Fenric disposed of, Ace and The Doctor paid a 
            visit to Perivale, where they became involved in The Master's latest 
            scheme (Survival). Following The Master's defeat, Ace and The 
            Doctor headed off for further adventures in the TARDIS, which she 
            had come to think of as home. At this point, accounts of Ace's 
            further exploits vary. There's evidence of a visit to Britain in the 
            18th century, where she sat for a portrait which would later hang in 
            Windsor Castle (Silver Nemesis), and we definitely know that 
            Ace left The Doctor before the final adventure of his seventh 
            persona (Doctor Who TVM). Some historians believe she became 
            disenchanted with The Doctor and left him to become a mercenary, 
            though they eventually reconciled before she stayed behind in 19th 
            century Paris. Others think she died bravely in battle. Yet a third 
            contingent believes that she was enrolled at the Time Lord academy 
            in a deliberate attempt by The Doctor to shake things up on his 
            homeworld. Perhaps The Doctor, who has always maintained his own 
            mysteries, has deliberately done the same with his beloved protégé, 
            and even now, somewhere, she fights evil, and faces the universe, on 
            her own terms. 
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