T ' Pol T ' Pol was a Vulcan who served aboard in the mid - 22nd century . She was the first Vulcan to serve aboard a Human ship for any substantial period . Early history . Young civilian life . T ' Pol was born to T ' Les and her husband in 2088 . ( ) As a child , T ' Pol was betrothed to a Vulcan named Koss ; their marriage was due to be conducted in adulthood . ( ) Raised in a house near the capital city on , young T ' Pol had and cared for a pet " sehlat " . ( ) She was also told about family secrets not recorded by her second foremother , T ' Mir – who had been an officer in the Vulcan High Command – regarding a duration in which T ' Mir had stayed in Carbon Creek , Pennsylvania , after crash landed nearby in 1957 . T ' Mir had kept her Human purse from Earth and it had become a family heirloom . ( ) Early career . During her early career , T ' Pol operated as an agent with the Vulcan Ministry of Security . Through this work , she often contacted Klingon s within the Klingon Empire who , years later , would help her locate a Klingon penal colony , Rura Penthe . ( ) One of T ' Pol ' s first assignments for the Ministry was to retrieve seven rogue agents who refused to return to Vulcan . Managing to capture five of the seven she was assigned to locate , T ' Pol tracked agents Jossen and Menos to Risa in 2135 . There , she killed Jossen but was unable to capture Menos . T ' Pol thereafter underwent the " Fullara " ceremony at the sanctuary of P ' Jem , which erased her memory of having killed Jossen , along with any associated emotion s . ( ) Later in her life , T ' Pol served the Vulcan High Command ' s Science Council aboard the starship " Seleya " . She acted as the ship ' s deputy science officer , working under Captain Voris and alongside Chief Engineer Commander Solin . ( ) T ' Pol also worked with the Vulcan military during the Tomed mission , at which Talok was under her command , as well as for the Ministry of Information on Vulcan . ( ) In 2149 , T ' Pol was assigned to Earth , both as an ambassador to the United Earth government and as an aide to Ambassador Soval . She resided in the Vulcan Compound in Sausalito , where she formed a strong working relationship with Soval . Like him , she believed that Humans were too " volatile " and " provincial " to leave their solar system . ( ) By that time , she had already been on thirty - six different Minshara class planet s . ( ) One night in 2150 , T ' Pol left the Vulcan Compound and went south to stroll the streets of San Francisco . Overhearing " unusual , chaotic " jazz music piqued her curiosity , so she entered the night club , where the music was being performed , and listened to the saxophonist there . The experience elicited an emotional response that she subsequently never forgot . ( ) Sometime during her stay on Earth , T ' Pol took a five - day leave to visit Carbon Creek and see it for herself . ( ) " Enterprise " . Year one . After Earth accidentally made first contact with the Klingon courier Klaang in April 2151 , T ' Pol was reassigned to the Earth Starfleet vessel " Enterprise " , with the rank of sub - commander . She acted as " chaperone " , in exchange for the Vulcan provision of star charts and the Klingon linguistic database , but was not immediately accepted by the crew . She was referred to as a " spy " by the ship ' s chief engineer , Commander Charles Tucker III . During an ensuing mission to return Klaang to his homeworld , however , T ' Pol accompanied Captain Jonathan Archer and an away team to a trade complex on Rigel X . There , she used her prior experience with alien cultures to lead the Humans through much of the investigation . She subsequently took command of " Enterprise " , when Archer was incapacitated , and anticipated the captain ' s wishes , pursuing the investigation despite her personal belief that it was a " foolish mission . " Upon the captain ' s recuperation , T ' Pol aided Archer both in uncovering a plot by the Suliban Cabal to destabilize the Klingon Empire and successfully returning Klaang to his people . T ' Pol was persuaded by Archer to remain aboard , following the conclusion of the mission , at which time she took the position of science officer and the title of first officer of " Enterprise " . ( ) Her quarters aboard " Enterprise " were located on B Deck . ( ) In her first capacity as a member of the crew , T ' Pol led a survey team in exploring an uninhabited M - class planet not far from Earth , a world which was later named Archer IV . ( ) She and her team were exposed to a powerful hallucinogenic toxin from the local plant life and consequently began to experience severe paranoia . Taking refuge from a powerful storm , she maintained much of her composure as her Human companions became lost in delusion . In communication with Archer aboard " Enterprise " , T ' Pol used playacting to get numerous members of her team – namely , Commander Tucker , Ensign Travis Mayweather , and Crewman Elizabeth Cutler – through the night , though she was forced to use a Vulcan nerve pinch on Ensign Mayweather . ( ) T ' Pol was again forced to utilize playacting in a crisis when she pretended to be a slave of Captain Archer , in order to gain the sympathies of Ferengi pirate s in late 2151 . With Archer and Tucker , T ' Pol was able to trick the Ferengi into leaving " Enterprise " , but not before they returned material s stolen from the ship . ( ) As " Enterprise " continued to explore space , the Vulcan High Command assigned at least one vessel to monitor the ship ' s activities . One of those vessels , the starship " Ti ' Mur " under the command of Captain Vanik , began secretly transmitting personal messages to T ' Pol , regarding her betrothal to Koss and obligation to return to Vulcan . During a " comet walk " on the surface of Archer ' s Comet , Lieutenant Malcolm Reed and Ensign Mayweather were trapped in an ice collapse . After persuading Archer , T ' Pol contacted the " Ti ' Mur " and enlisted the aid of Captain Vanik , to whom she declared her intention to stay aboard " Enterprise " . ( ) P ' Jem . On June 19 , 2151 , T ' Pol accompanied Archer and Tucker on a visit to the Vulcan monastery at P ' Jem . Finding it overrun by Andorian commando s under Thy ' lek Shran , T ' Pol and the two other officers from " Enterprise " were taken captive . Shran insisted that the Vulcan government was hiding a sensor array in the monastery to spy on Andoria and refused to release his hostage s . During an escape attempt , T ' Pol uncovered a hatch leading to a secret facility , unknowingly exposing the Vulcans ' duplicity . She was instructed by Captain Archer , who was incensed by the deception , to hand her scanning device – which contained detailed scans of the array – over to the Andorians , who proceeded to destroy the sanctuary . ( ) Following the destruction of the monastery , the Vulcan High Command chose to blame T ' Pol and ordered that she be recalled to Vulcan , dispatching the starship " Ni ' Var " under the command of Captain Sopek . During what would have been her final mission , T ' Pol and Archer were captured by Coridan rebels but escaped in time to prevent the death of Sopek . T ' Pol was injured , during a firefight , so she returned to " Enterprise " while Sopek departed to dissuade the High Command of their initial orders . ( ) Year two . Early in 2152 , T ' Pol and her crewmates re - encountered the Suliban and were framed for the destruction of a settlement on Paraagan II , an incident that had resulted in the deaths of 3 , 600 colonists . T ' Pol was instrumental in proving the crew ' s innocence , detecting a cloak ed Suliban device and helping in the retrieval of data disk s from a Suliban vessel . Upon the disappearance of Captain Archer and capture of " Enterprise " , T ' Pol led the crew in retaking the ship , successfully freeing it from a Suliban helix . During this incident , T ' Pol was tortuously interrogated by Suliban commander Silik for information regarding the " Temporal Cold War " . T ' Pol cited the Vulcan Science Directorate ' s findings , steadfastly maintaining that time travel was impossible . Suffering no lasting effects from the experience , T ' Pol was able to convince Ambassador Soval and Starfleet to continue " Enterprise " s mission , upon the safe return of Captain Archer . ( ) Later that year , T ' Pol used her prior combat training to teach settlers , of a deuterium mining colony , evasive technique s to repel Klingon marauder s . She instructed the colonists and members of the " Enterprise " crew in Vulcan methods of self - defense , in a successful effort . ( ) In August 2152 , T ' Pol ' s Vulcan physiology left her the only crewmember conscious aboard " Enterprise " when it encountered a debilitating trinary star system . She was left alone to save the ship but was able to revive Captain Archer , long enough to help him pilot " Enterprise " through the system and away from a black hole . ( ) Seventeen years after her initial stint with the Ministry of Security , T ' Pol once again found herself in pursuit of the rogue agent Menos . She now managed to trace him to Pernaia Prime , but began to doubt her mission and the guilt of Menos . Overcoming those doubts , however , she was able to prove that he was indeed a weapons smuggler and succeeded in apprehending the fugitive . ( ) After a group of Vulcan doctors at the Interspecies Medical Exchange learned that T ' Pol had contracted a deadly neurological disease called Pa ' nar Syndrome , her future aboard " Enterprise " was at stake . The team of doctors threatened to reveal her status to the High Command and have her recalled , as those who were infected were stigmatised in Vulcan society . To save her , Dr . Yuris – the youngest of the Vulcan doctors – declared himself to be among the minority and revealed to the others that T ' Pol wasn ' t to blame for having contracted the disease . ( ) With tensions between Vulcan and Andoria continuing to mount – following the incident at P ' Jem – T ' Pol accompanied Captain Archer and Ambassador Soval to the planet Paan Mokar , to mediate a territorial dispute . The group came under fire and crashed on the surface of the planet , where T ' Pol helped Archer to protect the ambassador from further attack . Ultimately helping bring about a cease fire on the planet , the efforts of T ' Pol and Archer allowed negotiations to commence . ( ) Year three . The Expanse . Following a Xindi attack on Earth on April 24 , 2153 , " Enterprise " was recalled home and underwent a major refit in preparation for a mission into the Delphic Expanse . Because this mission was seen by the Vulcan High Command as being an Earth matter , Ambassador Soval ordered T ' Pol to return to Vulcan , to be reassigned to the Ministry of Information . It was expected that , after a brief time at the Ministry , she would be allowed to return to Earth to continue her diplomatic duties . However , T ' Pol resisted . As " Enterprise " set course for Vulcan to deliver T ' Pol home and proceed to the Expanse , she abruptly resigned her commission and chose to remain aboard . ( ) During her tenure as technically a civilian amongst the crew , T ' Pol wore a variety of bodysuits in a variety of different color schemes . These included blue / grey , white , and muted pastel . T ' Pol later continued to wear a collection of bodysuits adorned with rank insignia , assignment patch and so on when she joined Starfleet . As a civilian member of the crew , T ' Pol retained her position as science officer and second in command , without the rank of sub - commander . She and Communications Officer Ensign Hoshi Sato worked to decipher the acquired Xindi database , shortly after the commencement of " Enterprise " s mission to find the Xindi and prevent a second attack on Earth . ( ) When she , Captain Archer , Lieutenant Reed , and Ensign Sato were exposed to a mutagenic virus on an Expanse planet , T ' Pol ' s Vulcan immune system slowed the disease ' s progression , allowing her to help her crewmates through the experience and aiding Denobulan Doctor Phlox in efforts to synthesize an antidote . ( ) Trellium - D exposure . Not long after their arrival in the Expanse , the crew of " Enterprise " located T ' Pol ' s former ship , the " Seleya " , which was caught in a trellium - D asteroid field . She , Archer and Reed took a to rendezvous with the " Seleya " , where they found the ship ' s surviving crew suffering from severe dementia and homicidal rage . Discovering Commander Solin among the survivors , T ' Pol was unable to reason with her former shipmates and simultaneously found herself succumbing to feelings of paranoia and anger . She started to lead Archer and Reed through the damaged Vulcan vessel to find an escape route , but began to suspect that Archer meant to murder the ship ' s Vulcan survivors and refused to cooperate . As the group neared escape , T ' Pol became violent and was stun ned by Archer until she could receive treatment aboard " Enterprise " . ( ) Dr . Phlox managed to treat T ' Pol for exposure to trellium - D found aboard the " Seleya " , determining it to be a powerful neurotoxin that affected only the Vulcan nervous system . This finding , however , meant that the substance could not be used to shield " Enterprise " from spatial anomalies that were inherent to the Expanse . T ' Pol understood the importance of " Enterprise " s safe completion of the mission and therefore urged Archer to leave her behind , but the captain refused . ( ) Despite making what appeared to be a full recovery , T ' Pol continued to experience the aftereffects of her exposure ; she was haunted by nightmare s and residual instability , occasionally becoming emotional and even violent . ( ) In the hopes of further releasing her emotions , T ' Pol secretly developed a method of injecting small doses of trellium - D directly into her blood stream . By February of 2154 , T ' Pol had become addicted to the substance , finally admitting her condition to Dr . Phlox , who aided her in withdrawal . However , prolonged exposure to the substance permanently damaged T ' Pol ' s ability to fully control her emotions . ( ) Conclusion of the Xindi mission . Still skeptical of time travel , T ' Pol ' s position on the Temporal Cold War was finally upended when she and Captain Archer visited Detroit of the year 2004 . They were aided by temporal agent and former Crewman upon their visit to the past , into which the pair of " Enterprise " officers had traced several Xindi - Reptilian s . Together with Archer , T ' Pol prevented the Xindi invader s from releasing a bio - weapon on Earth and exposed the involvement of the Xindi ' s god s , the Guardian s . ( ) T ' Pol later used information , provided by Andorian Commander Shran , to study a prototype of the final Xindi weapon , tracing its construction to a planet called Azati Prime . ( ) " En route " to Azati , " Enterprise " encountered a planet containing a crashed Xindi - Insectoid vessel . Captain Archer made an attempt to investigate the ship but became altered by a chemical toxin , making him unwilling to abandon an Insectoid hatchery and jeopardizing the mission . Acting in collusion with Tucker and Reed , T ' Pol led a mutiny to take control of " Enterprise " and forced Archer to receive treatment . ( ) Upon arrival in the Azati Prime star system , Archer set out alone to destroy the Xindi weapon , in what was presumed to be a suicide mission , but he was captured and tortured by Xindi - Reptilians . T ' Pol meanwhile commanded " Enterprise " in a defensive battle against a fleet of Reptilian warship s . ( ) " Enterprise " took severe damage and was nearly destroyed in the encounter but managed to escape with severe casualties . Suffering withdrawal from trellium - D , T ' Pol worked to restore the ship to operation , when Archer was returned by Xindi - Aquatic s . He acted against her advice by resolving to attack an alien vessel for much - needed supplies . T ' Pol resumed command of " Enterprise " to conduct this battle and managed to do so in a precise manner , the short conflict resulting in minimum damage on both sides . ( ) As a two - pronged final attempt at preventing both the release of the Xindi weapon and the destruction of Earth , T ' Pol and the " Enterprise " crew were ordered to destroy the Guardians ' ( or Sphere - Builders ' ) devices , while Archer and allied Xindi intercepted the weapon at Sector 001 . T ' Pol and Commander Tucker took " Enterprise " to Sphere 41 – a central location where they succeeded in destroying the entire sphere network , thus dissipating the anomaly field s and thermobaric barrier that formed the Expanse . With Archer missing – though successful in his mission to destroy the Xindi weapon – T ' Pol commanded " Enterprise " during the journey back to Earth . With the entire crew unsure of the future , she considered formalizing her own service with Starfleet . ( ) " Enterprise " made another detour to Earth ' s past and Captain Archer finally returned to the ship , after which T ' Pol and her crewmates arrived at Starfleet Headquarters in San Francisco , where they were welcomed as heroes . By 2154 , Admiral Forrest had approved T ' Pol ' s entry into Starfleet and she was officially assigned the rank of commander . ( ) Year four . Following a brief shore leave in which T ' Pol returned to Vulcan , the crew of " Enterprise " was recalled to duty , tasked with the capture of renegade Human " Augment s " , in May 2154 . Before the vessel departed , Captain Archer gave T ' Pol the gift of an antique compass in honor of her first official day of Starfleet duty . T ' Pol was visibly moved by the gesture . " Enterprise " traveled to the Borderland , where the ship was attacked by Orion slavers who used their transporter s to kidnap several members of the crew . T ' Pol was among the captured and was taken to a facility on Verex III , where she was put up for auction as a slave laborer . Fetching a high price , T ' Pol was returned to a cell from which she later escaped when Captain Archer successfully freed his crew . ( ) Following the capture of the Augments , " Enterprise " was ordered to Vulcan to investigate the bomb ing of the United Earth Embassy , a recent devastation which had resulted in the deaths of forty - three people ( among them , Admiral Forrest ) . Shortly after discovering that her mother ( T ' Les ) was a member of the Syrrannite s – an underground movement who were deemed responsible for the bombing – T ' Pol left the ship to locate her mother and was transported with Archer to Vulcan ' s Forge . The Starfleet duo tracked the Syrrannites to the T ' Karath Sanctuary , where T ' Pol and Archer found the group to be peaceful , far from the fanatics described by the Vulcan High Command . ( ) Not long after T ' Pol and Archer arrived at T ' Karath , the sanctuary was attacked and destroyed by the Vulcan government , killing many Syrrannites , including T ' Les . ( ) T ' Pol , strongly affected by her mother ' s death , traveled with Archer and the Syrrannite leader T ' Pau to the Vulcan capital to deliver the " Kir ' Shara " – an ancient artifact containing the teachings of Surak – to the High Command , whose members included Administrator V ' Las . T ' Pol and her companions were successful in their goal ; the revelation of Surak ' s true teachings , in whose delivery T ' Pol had played an instrumental role , brought about the dissolution of the existing Vulcan government and initiated a new wave of enlightenment to the planet , absolving the Syrrannites of guilt and ultimately removing any restrictions that the former government had placed on Earth ' s advancement into space . ( ) In November 2154 , " Enterprise " s crew began an investigation into the mysterious destruction of Tellarite and Andorian starships , ultimately leading to the discovery of a Romulan drone ship . ( ) T ' Pol worked with Dr . Phlox , Commander Shran , and Commander Tucker in constructing a telepresence unit in sickbay . This unit would potentially enable T ' Pol to enhance her own telepathic abilities and interfere with the operation of the drone ship , but , ultimately , she was unable to successfully operate the device herself . Her place in the unit was taken by an Aenar named Jhamel , who managed to destroy the Romulan vessel and prevent further attacks . ( ) With peace once again returning to the sector , T ' Pol sat by Captain Archer ' s side aboard " Enterprise " to initiate talks between the Andorians and Tellarites , forming the first union between Vulcan , Earth , Tellar , and Andoria . ( ) Terra Prime incident . During the following January , the terrorist group Terra Prime revealed the existence of a female , infant Human - Vulcan hybrid that had been created with stolen DNA from T ' Pol and Commander Tucker . The group ' s leader , John Frederick Paxton , used the child as a banner for furthering xenophobia on Earth , demanding the dissolution of the fledgling Coalition of Planets and the departure of all non - Humans from Earth . Accompanying Tucker , T ' Pol journeyed to the Orpheus Mining colony on Earth ' s moon , where the couple found their daughter but were captured by Terra Prime activists , who flew the mobile colony to Mars . ( ) T ' Pol and Tucker were rescued from Mars by an away team led by Captain Archer , and , once Paxton was taken into custody , they returned to " Enterprise " with their daughter . Aboard the ship , Dr . Phlox discovered a flaw in the process used to create the child , and she died a short time later . Despite this loss , both T ' Pol and Tucker were present in San Francisco for the formal founding of the Coalition . ( ) Later career . T ' Pol continued to serve aboard " Enterprise " as science officer through the 2150s and into the 2160s , retaining her position as first officer with the rank of commander . In 2161 , the long - thought - dead General Shran returned , asking for assistance from " Enterprise " in the recovery of his kidnapped child , Talla . T ' Pol contributed to this return effort by fabricating a replica of the Tenebian amethyst and serving as a member of an away team that was transported to Rigel X , where she exchanged the fake gemstone for Shran ' s child . Soon after this incident , T ' Pol joined Captain Archer on Earth for the founding ceremony of the United Federation of Planets . These events were depicted in a holodeck simulation run by Commander William T . Riker aboard the in 2370 . ( ) Medical record . In 2128 , T ' Pol had her teeth coated in a trifluorinate compound to prevent cavities . Despite having this procedure performed on her , T ' Pol had a cavity in one of her anterior tricuspid s that Dr . Phlox repaired in 2151 . ( ) During her first mission aboard " Enterprise " , T ' Pol and Commander Tucker were exposed to protocystian spore s and were forced to spend time in the ship ' s decontamination chamber . ( ) T ' Pol also spent time in " Enterprise " s sickbay for injuries she received from a particle weapon hit on Coridan , and for her exposure and subsequent addiction to trellium - D . ( ) She was also among multiple members of " Enterprise " s crew who was possessed by a wisp in 2152 . ( ) Early in 2153 , T ' Pol became exposed to an alien virus that caused her to enter an accelerated phase of " pon farr " . Without a proper mate to fulfill her biological need , T ' Pol ' s behavior was altered , causing her to be aggressively sexual and violent . Dr . Phlox sequestered her in decon until he could create a treatment . ( ) Special immunity . As one of the first Vulcans to serve aboard an Earth starship , T ' Pol ' s Vulcan physiology made her , in many cases , stronger and more physically resilient than her Human crewmates . When she was involved in an away team that explored the planet later called Archer IV and the group became affected by a powerful and paranoia - inducing toxin which was spread by pollen in the local area , T ' Pol , though not completely immune from this toxin , maintained her composure whereas her Human companions did not ; she reverted to her native language but remained lucid enough to administer an antidote . ( ) T ' Pol ' s physiology also made her resistant to the influence of the non - corporeal wisps that boarded " Enterprise " in 2152 . Capable of taking over the bodies of members of the ship ' s crew , the lifeform s were unable to affect T ' Pol , who used a telepathic link to learn about the entities . ( ) Later in 2152 , T ' Pol proved to be immune to the affects of the trinary star system encountered by " Enterprise " , when Human and even Denobulan members of the crew began experiencing obsessive behavior and eventually unconsciousness . ( ) In 2153 , when T ' Pol was exposed to an alien mutagenic virus in the Delphic Expanse , it mutated her DNA to resemble that of an ancient species called the Loque ' eque . The progression of this illness , however , was slowed by her immune system , preventing her from being as affected by exposure to the virus as Jonathan Archer , Malcolm Reed , and Hoshi Sato were . ( ) In late December 2154 , T ' Pol was unaffected by powerful pheromone s emitted by a triumvirate of Orion slave girl s , who boarded " Enterprise " in order to deliver it to the Orion Syndicate . As a threat to the Orion women , T ' Pol was briefly imprisoned in the ship ' s brig , but she finally managed to save the ship with the assistance of Commander Tucker . ( ) Pa ' nar Syndrome . When " Enterprise " encountered a starship carrying Vulcan " V ' tosh ka ' tur " in late 2151 , T ' Pol was persuaded by one of the Vulcans , Tolaris , to refrain from meditation for one night . This practice allowed T ' Pol to experience vivid dream s of a sexual nature but left her with headache s , elevated blood pressure , and unusual synaptic activity . Tolaris later forced her to participate in a mind meld that resulted in serious injury to T ' Pol . ( ) Within the next year , it was discovered that the less - than - voluntary mind meld had created a degradation in the synaptic pathway s of T ' Pol ' s brain , a deadly neurological disease that was known as Pa ' nar Syndrome . Dr . Phlox was unable to treat the affliction alone , so he sought the assistance of Vulcan members of the Interspecies Medical Exchange , but to little avail . ( ) During her time with the Syrrannite T ' Pau , T ' Pol learned Pa ' nar was treatable through the proper use of a mind meld . T ' Pau administered the meld , and T ' Pol was cured . ( ) Under the guidance of Captain Archer , T ' Pol safely initiated a mind meld with Ensign Hoshi Sato in 2154 . ( ) Personal life . Like many traditional Vulcans , T ' Pol was a vegetarian but was open to exploring a variety of other foods and beverages . ( ) She enjoyed chamomile and mint tea s , and experimented with Earth dishes , including pecan pie and Georgia peach es . ( ) Although she initially held to the Vulcan practice of not eating with her hands , no matter how impractical ( ) , she later occasionally broke this rule . ( , " et al . " ) T ' Pol also practiced regimented meditation , a routine from which she rarely deviated . ( ) Family . T ' Les . Though T ' Pol ' s father died sometime prior to 2151 and she had no siblings , she was close to her mother , T ' Les . ( ) While T ' Pol was serving aboard " Enterprise " , she and her mother corresponded through subspace communication s . However , at least one of T ' Les ' messages was lost , due to communications blackout s , while T ' Pol was serving on the Xindi mission . ( ) Following the destruction of the secret base at P ' Jem , the Vulcan High Command sought to place blame for the incident with T ' Pol but were unable to reach her in the Expanse . The High Command therefore censured T ' Les , forcing her resignation as an instructor at the Vulcan Science Academy . T ' Pol was initially unaware of the true reasons for her mother ' s early retirement and was later outraged to learn the truth . ( ) Possessing a somewhat tumultuous relationship with T ' Pol , T ' Les was nonetheless a keen observer of her daughter . T ' Les held more traditional values than T ' Pol and believed that T ' Pol ' s work should have been focused on the betterment of Vulcan society . Nevertheless , T ' Les observed that there was more to life than one ' s profession – an ideal she believed T ' Pol would benefit from learning . ( ) Given shore leave following the completion of the Xindi mission , T ' Pol returned home to Vulcan , with Commander Tucker as her guest . During this visit , T ' Les urged T ' Pol to fulfill her obligation to her family and proceed with her arranged marriage to Koss . At first resistant to the prospect of marriage , T ' Pol ultimately relented and agreed to the marriage on the grounds that it would benefit T ' Les . ( ) Later in 2154 , T ' Pol was reunited with her mother soon after learning that T ' Les had joined the Syrrannite underground movement . T ' Pol came to consider her mother as being far less traditional than she herself had previously thought and helped further her mother ' s cause , working to dissolve the Vulcan High Command . Sadly , T ' Les was killed when the High Command destroyed the Syrrannites ' base of operations . T ' Pol held her dying mother in her arm s and wept for T ' Les , who had previously observed that her daughter had always kept her emotions close to the surface . ( ) In her life , T ' Les possessed a pendant featuring the Vulcan symbol for IDIC . Following the discovery of her own infant daughter , T ' Pol placed the pendant in her child ' s crib . ( ) T ' Mir . After escaping from a Suliban helix in 2152 , T ' Pol , Captain Archer , and Commander Tucker celebrated the one - year anniversary of the start of " Enterprise " s mission . To commemorate the occasion , T ' Pol revealed the story of her second foremother , T ' Mir . T ' Pol framed the story as though it were fictitious , although she had previously visited the site of T ' Mir ' s crash , in Carbon Creek , Pennsylvania . T ' Pol also kept T ' Mir ' s handbag in a locker in her quarters , as a memento of the event . ( ) Personal relationships . Koss . At an early age , T ' Pol was arranged to be married to Koss , who became an architect . In 2151 , she was instructed ( in a message relayed by the " Ti ' Mur " ) to return to Vulcan , in order to marry Koss . However , she received advice from Commander Tucker that she had the right to remain unmarried if she so decided . It was after this that she opted not to journey back to Vulcan to marry Koss , instead choosing to stay aboard " Enterprise " . ( ) After her return to Vulcan following the Xindi incident , T ' Pol still refused to marry him . Koss visited her and admitted that he wanted to marry her . He attempted to persuade her by offering to let her resume her career if she spent one year with him on Vulcan . He also offered to help her mother regain her position at the academy from which she had been dismissed because of T ' Pol ' s involvement with the incident at P ' Jem . Koss and T ' Pol were finally married in 2154 . Later that year , Koss ended his marriage with T ' Pol after the death of her mother , T ' Les . Shortly thereafter , their marriage was officially dissolved . Despite their marriage having been arranged , Koss genuinely cared for T ' Pol , giving Archer his transporter codes so he and T ' Pau could reach the Vulcan High Command . He later told T ' Pol that he had done this because Archer had told him T ' Pol had been in trouble and that providing the codes was how he could help her . ( ) V ' Lar . While in her early school ing , T ' Pol traveled a great distance to see distinguished Vulcan ambassador V ' Lar at Vulcana Regar . During a recess of the second Ka ' Tann Conference , T ' Pol questioned the ambassador about her negotiating tactics . V ' Lar later recalled those questions to have been " presumptuous " but also key in having made her reconsider some of her previous positions . Likewise , T ' Pol credited V ' Lar for having inspired her career path , leading to her work with the Science Council and eventually to her work with Starfleet . On February 9 , 2152 , T ' Pol reunited with the ambassador when " Enterprise " was ordered to escort V ' Lar from the planet Mazar to Vulcan . Finding her to have changed since their initial meeting , T ' Pol was surprised at V ' Lar ' s levity and willingness to explore Earth culture . T ' Pol was at first disappointed with her second interaction with the ambassador but came to once again respect V ' Lar as a personal hero . ( ) Jonathan Archer . Although there was some tension when the two first met in 2151 , T ' Pol and Captain Jonathan Archer eventually became lasting friends , with a bond of trust and friendship between them . Though she may not have always agreed with the captain ' s style of command , she came to respect his judgment . Initially , Archer held a grudge against T ' Pol , believing that she would be just like all other Vulcans and that her only goal would be to hold Humanity back . She was also not particularly fond of his pet dog , Porthos . ( ) On the mission to Qo ' noS , T ' Pol ' s actions of assuming command and leading " Enterprise " in anticipation of the wishes of Captain Archer , who had been wounded and rendered unconscious for several hours , ultimately afforded Archer a newfound respect for her . ( ) T ' Pol ultimately became the captain ' s trusted and able first officer , second in command , and one of his most trusted advisers during the problems they faced during their missions . The emotional strength of her bond of friendship with Archer was made clear in many instances . Early in their professional relationship , T ' Pol earned more of Archer ' s respect , when she didn ' t turn a blind eye to the revelation of the secret Vulcan surveillance station at P ' Jem and instead helped Archer expose the spy station to the Andorian commandos . ( ) One of the first situations that demonstrated the captain ' s trust , respect , and his willingness to show T ' Pol the same respect as any officer under his command was in his response to Tolaris having forced a mind meld onto T ' Pol , essentially assaulting her . Archer , in turn , was angry and protective of T ' Pol , and made Tolaris betray his volatile emotional state . ( ) When Ambassador V ' Lar visited " Enterprise " in 2152 , she sensed a great bond between Archer and T ' Pol , of " trust . . . and friendship . " ( ) T ' Pol received support from Archer when she was sent on the emotionally troubling mission of apprehending Menos for the Vulcans . Archer accompanied her in an attempt to help her overcome her feelings of self - doubt , and the incident solidified the trust between the two . ( ) T ' Pol , in turn , was there for him when a good friend and former rival of his , A . G . Robinson , died . She listened to Archer tell a story about the two of them and figuratively offered him a shoulder to lean on . ( ) Archer routinely tried to persuade T ' Pol to interact with the crew . At the captain ' s suggestion , she even attended one of the ship ' s movie night s , which were held regularly . She was fond of the film " Frankenstein " , as it reminded her of first contact with Humans . ( ) Another example of T ' Pol ' s friendship with Archer was when she resigned her commission with the Vulcan High Command to accompany him and the rest of " Enterprise " s crew on the Xindi mission , to spite the insistence of her superiors that she be recalled and reassigned . ( ) Yet another demonstration of her bond with the captain was when Archer turned over command of " Enterprise " to T ' Pol and then left on what everyone aboard the ship , including him , considered a suicide mission to Azati Prime , to finally stop the Xindi weapon . T ' Pol , unable to control her emotions , hurriedly gave Commander Tucker the conn and went alone to the captain ' s ready room , where she started crying . ( ) T ' Pol was with Archer even years later , as he prepared to make a speech at the signing of the Federation Charter . Overcome with emotion , Archer embraced T ' Pol backstage before giving his speech . ( ) Romance . In 2152 , Jonathan Archer began harboring an attraction to his science officer . Any romantic aspect of this relationship was never pursued ; T ' Pol let the captain know that they could not " hypothetically " allow any attraction between themselves to become realized , indicating a reminder to him that he was her superior officer . ( ) " In an alternate timeline , Archer was afflicted with anterograde amnesia , as a result of being struck by a temporal anomaly from which he was trying to save T ' Pol . After she assumed command of " Enterprise " but failed to save Earth from being destroyed by the Xindi , T ' Pol resigned her captaincy and spent twelve years caring for Archer on Ceti Alpha V . She learned more about him , over the years , while he continuously forgot everything past the day he had become ill . It became apparent to T ' Pol , however , that she had started to harbor romantic feelings for Archer , although nothing could come of it due to his illness . By 2165 , a way had been found to eradicate the interspatial parasite s that were preventing Archer from forming new memories . Phlox suggested to T ' Pol that , if the treatment worked , the relationship between her and Archer might be different . " " Ultimately , it was found that destroying the parasites infesting Archer ' s brain in the present also destroyed them in the past , preventing them from ever infecting Archer and thereby effectively erasing the alternate timeline in which he and T ' Pol now found themselves . Utilizing this method meant the destruction of " Enterprise " and the deaths of its crew , a virtual inevitability due to the Xindi ' s extremely intense attack on the ship , but it was nevertheless decided that this method would indeed be used . Before the ship exploded , however , Phlox , T ' Pol , and Archer were struck down by Xind - Reptilian soldiers , with T ' Pol dying in Archer ' s arms and he , having used his last breath to initiate the subspace implosion , dying on top of the lifeless T ' Pol . " ( ) Charles " Trip " Tucker III . In the beginning , T ' Pol ' s relationship with Tucker was cordial , even though neither seemed to have much sympathy for the other . Upon their first meeting , T ' Pol refused to shake hands with him , and Tucker once mentioned to Crewman Elizabeth Cutler – who was trying to be nice to T ' Pol – that she ' d have " better luck making friends with a housefly . " ( ) However , they warmed up to each other during the Xindi crisis . After Tucker ' s sister died in the Xindi attack on Earth , Tucker suffered insomnia , so Phlox convinced T ' Pol to assist the engineer , in order to help him rest . T ' Pol ' s application of Vulcan neuro - pressure not only helped , but Tucker also began to develop romantic feelings for T ' Pol . They had intimate relations in January 2154 , though T ' Pol later denied her emotions , calling it an " exploration of Human sexuality . " ( ) After the Battle of Azati Prime in February 2154 , Tucker was haunted by vision s of Crewman Jane Taylor , a member of his engineering team who had died in the attack . He was supposed to be writing a letter of consolation to her parents but was unable to do so , as she reminded him too much of his sister , Elizabeth . T ' Pol consoled Tucker , discussing the emotions he felt concerning both his sister and Crewman Taylor . ( ) Once " Enterprise " returned to Earth , T ' Pol went on to Vulcan , asking Tucker – who complained of having nowhere to go – to accompany her to Vulcan . While there , she discovered that her mother was forced into retirement and T ' Pol ' s old bond - mate , Koss , entered the picture . T ' Pol subsequently entering into marriage with Koss ( as a way to save T ' Les ) broke Tucker ' s heart . Even though the marriage to Koss was annulled soon thereafter , T ' Pol and Tucker ' s relationship from that point forward was confusing to both of them , as T ' Pol sought – after her mother ' s death and interest in Surak ' s teachings – a more Vulcan way of life . ( ) Tensions culminated in November 2154 , when Tucker decided to transfer to the starship " Columbia " . He realized his feelings were jeopardizing his work , worrying that it would further interfere with his duties . When Trip came back aboard " Enterprise " , T ' Pol persuaded him to stay , sealing her plea with a kiss ( a possible indication that she wished to continue their relationship ) . Afterward , Trip explained to her that he ' d already requested permission from Captain Erika Hernandez , " Columbia " s commanding officer , to return to " Enterprise " . ( ) In January 2155 , T ' Pol discovered that her DNA , as well as Tucker ' s , had been stolen by Terra Prime to create a baby ( also named Elizabeth ) . ( ) After rescuing her with the help of Tucker and Archer , Phlox discovered that the child was dying , due to genetic engineering mistakes . ( ) Soon after their daughter ' s death , T ' Pol and Tucker ended their relationship . Six years later , Tucker sacrificed his own life to save Archer and possibly others aboard " Enterprise " . Prior to his death , he and T ' Pol discussed their relationship for the first time since they had broken it off , with T ' Pol admitting that she would miss him when she moved on to other assignments . Following Trip ' s sacrifice , T ' Pol received comfort from Archer as the two of them mourned their mutual friend . ( ) Sim . In 2153 , a mimetic simbiot of Trip , named Sim , was grown as a tissue donor . During his short life , T ' Pol learned from Sim that he had feelings about her , saying he wasn ' t sure if he had " inherited " them from Trip . Right before Sim sacrificed himself , T ' Pol visited him and expressed how much she and the rest of the crew would miss him , and then abruptly kissed him goodbye . ( ) Tolaris . While Tolaris was visiting " Enterprise " in 2151 , T ' Pol met him and was inspired by him to further explore her emotions , a subject she was curious about . She also followed his suggestion not to meditate for one night . Later , Tolaris came to T ' Pol ' s quarters and suggested using a mind meld to help her . She , however , was very uncomfortable and told Tolaris to stop . When he did not desist , she told him to leave , which he finally did . Her abusive experience with Tolaris resulted in him and his fellow " V ' tosh ka ' tur " being forced to immediately leave " Enterprise " . ( ) Alternate realities and timelines . In the alternate timeline wherein Captain Archer was infected with interspatial parasites that caused him to develop anterograde amnesia , T ' Pol received a Starfleet field commission in 2153 , promoting her to captain . However , she was unable to find the Xindi weapon early enough to stop it from destroying Earth . She continued to captain " Enterprise " until 2156 , when it reached Ceti Alpha V with the last 6 , 000 survivors of the Human race . She retired then , caring for the amnesiac Archer until 2165 , when Phlox found a cure . During a Xindi attack , T ' Pol , Archer , and Phlox sacrificed themselves to create the subspace implosion that destroyed the parasites and altered the timeline . ( ) In a different timeline , in which " Enterprise " became trapped in 2037 , T ' Pol eventually married Commander Tucker in a traditional Vulcan ceremony ; they honeymoon ed in Cargo Bay 3 . With Doctor Phlox ' s help , they had a son , Lorian . By 2153 , T ' Pol , approximately 183 years old , was the only original crewmember of " Enterprise " left ; she was also more in touch with her emotions , actually hugging the past Archer when the two met . When the ship rendezvoused with the original " Enterprise " in February 2154 , T ' Pol informed Captain Archer that a plan Lorian had devised , to increase the efficiency of the plasma injector s , could end up destroying the ship . ( ) Appendices . Background information . T ' Pol was played by actress Jolene Blalock in all ninety - eight episodes of . Throughout the run of the series , several stuntwomen doubled Blalock , including Boni Yanagisawa and Lisa Hoyle . The character of T ' Pol was invented , as a crewmember aboard " Enterprise " , by ENT creators and Executive Producers Rick Berman and Brannon Braga . " " We knew we wanted a Vulcan on the ship , " " noted Braga . ( ) The character of T ' Pol was originally intended to be a younger version of the Vulcan matriarch T ' Pau . ( ) Meanwhile , a description of the character was written in the series bible for " Star Trek : Enterprise " . It described her thus ; " " Vulcan female . Austere but sensual . She ' s the Science Officer assigned to ' oversee ' our progress . In exchange for starcharts and tactical information , the Vulcans insisted we include one of their officers on the " Enterprise " . Starfleet Command reluctantly agreed . Not everyone is happy with this addition to the crew . Why do we need a Vulcan watching over us like we ' re children ? T ' Pau isn ' t thrilled with this assignment , either . She was hoping for a Vulcan commission . The last thing she expected was to be living among a primitive , irrational species . But she ' s resigned to this ' hardship post ' because she had no choice . She ' s not comfortable around the crew . . . or the emotions they display . Secretly , however , she will begin to envy Humans . Now that she lives among them , she can ' t help but develop a fascination with their cultures . In private , she likes to sample their food , and catalog their behavior . She even studies their mating customs [ . . . ] She can ' t stand the smell of Humans when they ' re anxious . She ' s older than everyone on board . But she won ' t reveal how old . Hoshi is always asking her about her age . T ' Pau : ' In human years or Vulcan years ? " " While this character was still planned to be a young version of T ' Pau , a character breakdown sheet that Paramount sent to talent agents , upon seeking an actress to play the part , referred to the role thus ; " " Late 20s , early 30s . Vulcan female . Austere yet sensual . She ' s the Science Officer assigned to oversee humanity ' s progress on board " Enterprise " . Although she ' s cautious and guarded around Humans , whom she considers primitive and irrational , she ' s developed a grudging respect for Captain Archer . She ' ll become one of his most loyal and trusted crew members . " " The character also had the name " T ' Pau " in the second draft of the script for series pilot , which additionally described her as " a striking young female . " The initial concept of this character being pre - established Vulcan matriarch T ' Pau was changed in series pre - production due to legal concerns . ( ) In , Braga elaborated somewhat further on the name change by explaining that the idea had been nixed in order to avoid having to deal with the " legal component " of writer Theodore Sturgeon , who had created the character of T ' Pau , and also because the name " T ' Pol " was easier to pronounce . It was considered , at one time thereafter , to make T ' Pol a relative of T ' Pau ' s . ( ) The possibility of them being sisters was eliminated by , in which T ' Pol states that she has no siblings , and T ' Pau eventually appeared as an unrelated character in the episodes and . Even though this character ' s name was changed to T ' Pol by the writing of the revised final draft script for " Broken Bow " , that script draft took cues from the descriptions in the breakdown sheet and ( more naturedly ) the second draft of the script . The teleplay ' s revised final draft not only referred to T ' Pol as " a striking young female " but subsequently commented , " " Her look is severe yet sensual . Although she ' s been living amongst Humans for several months , she is cautious and guarded around them . " " The role of T ' Pol was the most difficult regular part on " Star Trek : Enterprise " to cast . Brannon Braga reflected , " " The last role we cast was T ' Pol . It took a lot of searching to find that actress who was at once striking and yet had an intelligence about her , who also is a good actress . It is a hard combo , for whatever reason . " " ( " " , paperback ed . , p . 255 ) Rick Berman offered , " " We read hundreds of actresses and Jolene [ Blalock ] was in the last group we read . And she just blew us away . " " ( ) Blalock attended the casting session with no makeup on . Evaluating how good she would be in the role was based on viewing some footage of other productions she had been in , which wowed Berman and his co - workers . ( audio commentary , ENT Season 1 DVD / Blu - ray ) During a press conference to announce the start of " Star Trek : Enterprise " , Jolene Blalock expressed that T ' Pol ' s femininity seemed advantageous to the show , that the character was " feline in her movements " ( T ' Pol was likewise referred to as landing " cat - like " on a landing platform in the final draft script of ) , and that – because Spock had been her favorite regular character from " Star Trek : The Original Series " – she found portraying T ' Pol " really strange . " Blalock also commented on the character ' s makeup , hairstyle , and costume , saying that the appliances took " just shy of two hours " to have put on , and that she felt they were relatively effortless while being worn . ( ) Initially , Jolene Blalock felt the prospect of portraying T ' Pol was a huge challenge and " an enormous responsibility . " She believed it was important not to fail what Gene Roddenberry had dreamt up , and not to let down her cast , her crew , or herself , either . " " But in the risk of failing there ' s growth , " " she mused , " " and it may be uncomfortable and I may experience growing pains , but at the end of it all I ' m stronger for it and I ' m watching myself grow , and it ' s a beautiful thing . So I ' ll take that responsibility [ . . . ] I am the beginning [ of Vulcans ] ; this is laying the foundations , so everything that I do should be fresh and new . I need to create this out of originality , and I want to create it for myself . " " On the other hand , Blalock did take inspiration for the role from Leonard Nimoy ' s Spock , re - watching all of TOS in preparation for playing T ' Pol . ( ) Shortly after the casting of Jolene Blalock as T ' Pol , Brannon Braga implied he thought of T ' Pol as somewhat similar to , remarking , " " It ' s ' Gorillas in the Mist ' time . " " Braga drew that parallel because he was thinking of T ' Pol as " the first alien – certainly the first Vulcan – to live among Humans . " However , this concept was evidently later changed . An idea which arguably stayed the same , on the other hand , was that he and Rick Berman meanwhile regarded T ' Pol as a character who would " have a long journey ahead of her , " in Berman ' s words . ( ) Prior to the midpoint of ENT Season 1 , he and Braga had some ideas for what they definitely wanted to have happen to T ' Pol towards the end of that season . ( ) At one point during the series run , Soval actor Gary Graham suggested that T ' Pol turn out to be Soval ' s long - lost daughter , because of her resemblance to the actor ' s own sister . Graham later recalled , " " I thought it was a slam dunk when I suggested it , but it was never picked up . " " In a potential season five episode , writer / producer Mike Sussman hoped to have T ' Pol finally meet her father , planning to reveal to the audience that T ' Pol ' s father was instead a Romulan agent who had posed as a Vulcan officer prior to faking his own death . The suggestion that T ' Pol was half - Romulan would have shed light on her affinity for Humans as well as her interest in experimenting with emotions . ( " Information provided by " ) Hairstyle . Given that Jolene Blalock actually has curly blonde hair , Hair Designer Michael Moore decided , without question , that she would have a dark - haired wig for the role of T ' Pol . However , choosing the type of wig proved difficult . ( ) Indeed , the original hairstyle used for T ' Pol was different ; for several days of filming , Blalock wore a wig that was longer than the one eventually used . When it was decided that T ' Pol ' s hairstyle should be changed from this original one , several scenes had to be reshot to eliminate the longer wig from appearing . The character ' s original look can be seen on the Season 1 DVD of " Enterprise " , in a deleted scene . Typically , the wig for T ' Pol covered Jolene Blalock ' s natural hair , which was wound in a flat wrap and covered in a cap before the wig was put on . Preparing the hairstyle in this way usually took thirty minutes , handled by " Enterprise " stylist Gloria Pasqua Casny . ( ) Even though T ' Pol ' s short wig at the beginning of " Enterprise " seemed like a logical precursor to Spock ' s haircut in the original series ( with somewhat irregular bangs that echoed Spock ' s rigidly straight bangs ) , further transformations in the hairstyle took place during the run of " Enterprise " . " " [ The producers ] wanted a look that was a little bit softer compared to previous Vulcans , " " recalled Michael Moore . " " The second year , we tried to make it even softer . " " ( ) In the final draft script of third season premiere , a scene description stated about T ' Pol , " " Her hair has a slightly more ' casual ' look . " " From the start of the third season onwards , T ' Pol ' s previously blockier and dark - brown hairstyle started to be toned with lighter - color highlights and became less puffy at the top . Shortly before production on the series ' fourth season began , Moore declared , " " I ' m hoping that in the new year , we can soften her [ hairstyle ] even more . The Humans tend to have an effect on her . She ' s becoming a product of her environment , even though Vulcans aren ' t supposed to do that . So , I ' m hoping we can reflect that in her hair a little bit . But we still can ' t go too far from being Vulcan . " " ( ) Clothing . T ' Pol controversially appeared without clothing in several episodes , with the most explicit example of this in . The character also had more costume changes in the run of " Star Trek : Enterprise " than any of the other main characters . The following is an account of the clothes that she wore during the series . The first appearance of each outfit is listed but subsequent appearances of all outfits are not . After receiving the rank of commander and a Starfleet commission , T ' Pol continued to wear her civilian " catsuit " with minor alterations : teal , sciences division piping on the shoulders , commander ' s rank , and an " Enterprise " assignment patch . Reception . In , Mark Jones and Lance Parkin , writers of the review reference book " Beyond the Final Frontier " ( pp . 356 & 357 ) , commented therein , " " Jolene Blalock ' s T ' Pol is criticised [ by " Star Trek " fans ] for being ' too sexy ' – this despite the fact that she ' s a strong , rational , powerful female character , and that the actress is a keen ambassador for the show , and for " Star Trek " in general . T ' Pol may epitomise the " " generation of actresses , but surely that ' s better than any portrayal of women in either [ the original series of ] " Star Trek " or " " [ . . . ] The star of the show [ " Enterprise " ] , though , is Jolene Blalock . She has a gift of a role with T ' Pol , but has made the most of it . At first glance , she ' s merely eye candy , and indeed during the first season , the writers found little for her to do but smoulder . But Blalock ' s approached the least subtle of roles with a clever understatement that makes you feel that both the character and the actress are holding back for fear of outclassing those around her . She ' s easily the funniest , sexiest , smartest regular actor to be cast in " Star Trek " in 15 years , and the second season saw her get some plum drama and comedy . " " T ' Pol ' s experimentation with and addiction to trellium - D proved controversial . At the time , Brannon Braga admitted , " " I know some fans are up in arms about why a Vulcan would do something like this . " " ( )