Martha

Martha Jones met the Doctor luckily during her time working as a medical intern. The Doctor promised her two trips that became many more. However after meeting the Master, she opted to stay behind. She eventually joined UNIT, worked with Torchwood for a time, before quitting entirely to become a mercenary with her husband, Mickey Smith.

Biography
Martha Jones was a medical student at the Royal Hope, soon to qualify as a doctor, when the Judoon stole the hospital. Astonished as she was to find herself on the moon watching real aliens marching across its surface in pursuit of a fugitive Plasmavore, Martha remained calm, immediately starting to think through what had happened and how the patients and staff were still alive and able to breathe. Impressed by Martha’s levelheaded intelligence, the Doctor happily let her join his investigation, though she took some c onvincing that he, too, was an alien. Ultimately, he owed his life to her – when the Plasmavore drank his blood, Martha gave her last breath to resuscitate him – and it was Martha who deduced that the Doctor’s alien blood would not hide the Plasmavore from the Judoon.

Impressed as he was with Martha, the Doctor was reluctant to take on a new companion so soon after being parted from Rose. He offered her a trip in the TARDIS, but constantly emphasized that she was not a replacement for Rose. In fact, the Doctor failed to notice Martha’s feelings for him and frequently and inadvertently upset her by seeming to compare her with Rose. He could not, though, overlook her reliability and sheer guts in the face of Carrionites, car-jackers and Daleks, and when she confronted him over his unwillingness to open up to her, told her about the Time War and the loss of his people. By the time they had dealt with the mutated Professor Lazarus, with Martha again risking her life to lure the creature into a trap, the Doctor had accepted Martha as more than just a passenger.

Martha, now acknowledged by the Doctor as a fully fledged travelling companion complete with ‘superphone’ and TARDIS key, was devoted to the Doctor and willing to risk everything for him. She still sometimes found it hard to accept that he would not return her feelings for him and, though she found herself attracted to Pentallian crewmember Riley, she didn’t consider staying with him. On the wreck of the Infinite soon afterwards, she was shown her ‘heart’s desire’ – the Doctor.

But when they were hunted by the Family of Blood, a parasitic species with a very limited life span who wanted the Doctor’s Time Lord essence, he physically changed himself, taking human form and placing himself entirely in Martha’s protection. As history teacher John Smith, he fell in love with a school nurse, with Martha forced to admit that her own feelings would never be reciprocated.

Following a short pit-stop in Cardiff, the TARDIS took Martha and the Doctor to the end of the universe and the planet Malcassairo, where they met Captain Jack Harkness. They also encountered the last of humanity in the universe, being assisted by Professor Yana. Whilst assisting Yana, Martha noticed that he possessed a watch of similar design to the Doctor's Chameleon Arch, which prompted him to open it. The human Yana was transformed back into the Doctor's Time Lord nemesis, the Master, and escaped in the TARDIS.

Martha, Jack, and the Doctor used Jack's Vortex manipulator to travel back to 21st century Earth on the day after Harold Saxon was voted Prime Minister. They figured out that Mr. Saxon was in fact an alias of the Master, who had been living on Earth for months since his departure from Malcassairo. The Master, who had been manipulating Martha's family since she became a full-time companion, had Francine, Clive, and Tish arrested while Leo managed to escape. As her family, Jack, and the Doctor were all taken prisoner aboard the Valiant, Martha teleported back to Earth with a mission to defeat the Master.

The Doctor had never had to rely on anyone so completely as he did Martha Jones when the Master and the Toclafane took control of the world. With her family and Captain Jack imprisoned on the Valiant and the Doctor physically aged to his full 900 years, the fate of the planet was in Martha’s hands. Alone, she walked across the globe for a year, and became a legend. There were rumors that she had been collecting parts for a gun that could kill the Master, but Martha had actually been inspiring the survivors with stories of the Doctor, and preparing everyone she had met for the countdown to the launch of the Master’s war rockets. Led by Martha, the whole world thought of the Doctor in that final moment, giving him the psychic strength to rejuvenate and end the Master’s reign.

Realizing that the Doctor would never reciprocate her feelings for him, Martha now decided to leave the TARDIS and concentrate on helping her family get over their experiences at the hands of the Master. To her delight, Martha discovered that the Doctor had recommended her to UNIT. Her medical qualifications were fast-tracked and Doctor Jones was recruited as a UNIT medical officer.

Martha's next adventure with the Doctor was almost eight months later when as a UNIT officer. She was engaged to the young Thomas Milligan which the Doctor didn't notice, but Donna did. At that time, UNIT was planning on taking out the ATMOS factory after several unexplained deaths happened. This led the Doctor and Donna Noble back to Earth to invesitgate. As they did so, they found out that ATMOS was created with Earth technology, but being used for a Sontaran Invasion. Martha Jones was seemingly 'cloned' by the Sontarans throughout most of this adventure, although she was around 'hindering' the Doctor or so the clone thought. The Doctor used the clone to stop the UNIT from directly bombing the Sonatarans who could easily retaliate. After the Doctor stopped the Sontarans, Martha planned on staying behind, but the TARDIS had other plans.

The TARDIS brought the trio of Messaline where the Doctor was cloned to create a seemingly perfect genetic duplicate in the form of a young blond girl named Jenny. An explosion led Martha to be separated from the group, and by helping one of the Hath, she earned their trust. A single Hath stayed behind to guard her after the Doctor unknowingly opened a map to their legendary 'Source'. Martha decided to take a short cut on the toxic surface, and although she nearly died, her Hath friend sarcrificed himself for her to make it to the other side. She met up with the Doctor and Donna only to see Jenny die by the hands of one of the humans. After several tears, Martha returned home once more to her awaiting husband.

While working for UNIT, she became a temporary liason and medical advisor to Torchwood Three. However, after Owen Harper 'recovered' to some extent from the trauma of being killed and resurected as a zombie-like creature, she once again decided to return to UNIT. Before she fully left Torchwood, an unexplained vortex manipulator triggered various sensors within the Torchwood Three Hub leading the six members to find Matty Smith, River Song, and Tomy Wakefern with an unconscious body of a Time Agent. Asking for Martha Jones, and explaining their predaciment. She went with them to UNIT where she set up a device around Matty to bring them to the Circus at the Crossroads and fight Sutekh. During the battle with Sutekh, she helped get everyone towards the TARDIS before going with Romana in Hex's TARDIS to throw Omega into the Black Hole and create a New Eye of Harmony. She was returned exactly as she left, however because the Doctor's timeline was after hers, Omnia made her forget about these events until the timelines coincided once more.

Despite not being able to attend Gwen's wedding, Martha was available to attend Owen and Toshiko's funerals. She later phoned Captain Jack after her she was stationed at the CERN Facility in Switzerland. Some of the staff had gone missing. The Torchwood 3 team went to Switzerland to investigate what happened. They found out that the person who was responsible was Dr. Harrington the souls where released in the rightful body and saved.

Martha moved to New York after promotion to the post of Medical Director on Project Indigo, a teleport device created using recovered Sontaran technology. Whilst she was working at the Manhattan HQ of UNIT in New York City, Earth was transported to the Medusa Cascade.

During a Dalek attack on the base, General Sanchez orders Martha to use Project Indigo -- a teleportation device -- to escape HQ in order to track down the Doctor. Sanchez also gives her the Osterhagen Key and orders her to use it should the need arise. Initially, Project Indigo, which had never been tested, teleported Martha to her home in London where she was reunited with her mother. Martha later theorised that her emotions controlled it, sending her home.

Harriet Jones meanwhile had created a Sub-Wave Network and utilised it to contact her, Torchwood and Sarah Jane Smith to work together to assist Earth and defeat the Daleks. Together they all contacted the Doctor and summoned him to help them to fight the Daleks. However, unsure of whether the Doctor would come, Martha made the decision to use the Osterhagen Key and departed from her mother, teleporting to Germany and a secret UNIT base -- one of several Osterhagen Key activation points on the planet.

Martha and two other UNIT operatives in other parts of the world prepared to activate the Osterhagen Project, but prior to its final activation she contacted the Crucible telling the Daleks and Davros that she would use the key to destroy the Earth rather than let it fall into suffering at the hands of the Daleks. However she was teleported to the ship, meeting and re-encountering the Doctor, Rose Tyler, Mickey Smith, Jackie Tyler, Jack Harkness, Sarah Jane Smith and Donna Noble. They each helped defeat the Daleks and destroyed the Crucible. Martha and the others assisted the Doctor to pilot TARDIS towing Earth back to its solar system.

After the Earth was returned to its proper place, Martha departed the TARDIS with Jack Harkness, who could be heard offering her a job with Torchwood. She decided to go into "freelance" alien fighting with Mickey Smith, who she had married. Martha would occasionally go back to UNIT, however, filling in for her friend Malcolm Taylor as London's Scientific Advisor.

Family

 * Mickey Smith - Husband
 * Francine Jones - Mother
 * Clive Jones - Father
 * Tish Jones - Sister
 * Keisha Jones - Niece

Personality
Martha was a friendly, intelligent, brave and good-spirited person. The Doctor was impressed with her theory about having air on the Moon, and he asked her to join him in the hospital balcony to see if they could breathe. Although the Doctor asked more of her than any other companion (watching after him while he was human, walking the world for a year), she rose to every challenge.

Throughout her travels with the Doctor, Martha developed a crush on him and always wondered if the Doctor liked her back. Martha was jealous of Joan Redfern when the Doctor made himself human and fell in love with her, and said he "had to go and fall in love with a human, and it wasn't me".

In The Year That Never Was, Martha admitted that she loved the Doctor, but after the Master's defeat, Martha told the Doctor that she no longer had any romantic feelings for him. Indeed, she is later engaged to Tom, and for unexplained reasons marries Mickey Smith instead. Although she was often made to be jealous of Rose Tyler, Martha seemed genuinely happy for the Doctor when he and Rose were re-united. She got along very well with Donna Noble and his other companions.