Cosmetic surgery Cosmetic surgery was a medical procedure to change the physical appearance of a person , frequently in order to deceive others of the altered individual ' s true appearance during undercover situations , such as reconnaissance missions . It had some of the same external effects as genetic engineering . During the 20th century , such procedures were performed almost exclusively by plastic surgeon s . ( ) Known cosmetic procedures . 22nd century . In 2149 , the Klingon scientist Antaak disguised himself as a Mazarite and attended an IME conference on Tiburon . ( ) In 2151 , Jonathan Archer , T ' Pol , and Hoshi Sato were surgically modified to look like Akaali s while they investigated a mysterious disease . ( ) In 2152 , Malcolm Reed had cosmetic surgery to appear like a Suliban in an attempt to rescue Archer and Travis Mayweather from a Tandaran detention complex . ( ) Later , Vulcan operatives Jossen and Menos were surgically altered to appear like inhabitants of Agaron . ( ) 23rd century . In 2267 , Captain James T . Kirk and Spock of the Federation starship traveled back in time to 1930 , and to explain Spock ' s alien appearance , claimed that a missionary had to use plastic surgery skills to save Spock ' s life after a mechanical rice picker accident , with the unfortunate side effect of pointing his ear s . ( ) In 2268 , Arne Darvin , a Klingon Intelligence operative , was surgically altered to appear as a Human , but was identified during his mission to poison a shipment of quadrotriticale grain on Deep Space K - 7 . ( ) . Jadzia Dax also underwent a cosmetic operation to make her appear Human when , in 2373 , the went back in time to stop a future Darvin from tampering with the timeline . ( ) Later in the same year Thelev , an Orion agent , was cosmetically altered to appear Andorian , planning to sabotage the Babel Conference concerning Coridan ' s attempt to join the Federation . ( ) Still the same year , Kirk underwent cosmetic surgery to appear as though he were a Romulan , in an attempt to steal a cloaking device from a Romulan battle cruiser . ( ) 24th century . In 2346 , during the Cardassian Occupation of Bajor , Kira Meru was brought to Terok Nor to serve as a comfort woman to the Cardassian officers . Gul Dukat , the prefect at the time , noticed a large scar on her cheek . However , instead of having her replaced , he used a dermal regenerator to remove the scar . ( ) During the 2350s , a assumed the identity of Starfleet officer Raymond Boone until his true identity was uncovered in 2370 . ( ) In 2366 , Counselor Deanna Troi and Commander William T . Riker of the posed as Mintakan s while observing their primitive culture . ( ) In 2367 , Riker underwent cosmetic surgery giving him the appearance of a Malcorian . He then went undercover on Malcor III to determine if the planet was ready for first contact with the Federation . Unfortunately , he was captured , and upon examination , it was discovered that he was not a Malcorian . ( ) In 2368 , Captain Jean - Luc Picard and Commander Data underwent cosmetic surgery under the supervision of Doctor Beverly Crusher so that they could conduct an undercover operation on Romulus . ( ) In 2369 , Troi was kidnapped and surgically altered by the Romulan underground movement to assume the role of Major of the Tal Shiar and help Vice - Proconsul M ' ret and two of his aide s defect to the Federation . ( ) In the same year , Aamin Marritza , a Cardassian file clerk , had some cosmetic surgery to impersonate another Cardassian , Darhe ' el , in an attempt to be punished for not opposing crimes committed during the Occupation of Bajor . ( ) In 2370 , Nikolai Rozhenko and his foster brother , Worf , were surgically altered to resemble Boraalan s . ( ) In the same year , junior officer Sito Jaxa volunteered for a mission which required her to be surgically altered to appear abused by Cardassian defector Joret Dal . ( ) Jadzia Dax was temporarily modified to look Bajoran during The Circle ' s attack on Deep Space 9 . ( ) A bit later , Commander Riker and Doctor Crusher had cosmetic surgery to appear like Barkonian s and uncovered what happened to Data after a Federation probe crash land ed on the planet Barkon IV . ( ) Riker posed as a Bajoran for a brief time in an attempt to root out a Maquis cell , but Ro Laren betrayed him and the Federation . ( ) In 2371 , a Cardassian named Corbin Entek of the Obsidian Order captured Kira Nerys and altered her to appear to be Legate Tekeny Ghemor ' s daughter Iliana in order to expose Ghemor ' s ties to the Cardassian Underground . ( ) Around the same time , Arissa , the alias of an Idanian Intelligence agent , underwent reconstructive surgery and her memories were replaced in order to infiltrate the Orion Syndicate . Two years later , Odo revealed her true identity . ( ) Chakotay also was surgically altered in this year , in the Delta Quadrant , to look like a Vidiian in order to find out what happened to shipmates B ' Elanna Torres and Tom Paris . ( ) In 2372 , Dr . Bashir erased the memory of Kurn , Worf ' s brother , and surgically altered his face so that he could assume a new identity as Noggra ' s son Rodek rather than be killed by Worf . ( ) In 2373 , a Starfleet team infiltrated the Klingon station Ty ' Gokor in an attempt to expose Chancellor Gowron , the leader of the Klingon Empire , as a Changeling . The team was comprised of Worf , Benjamin Sisko , Miles O ' Brien , and Odo . The latter three , not being Klingon , had to undergo cosmetic surgery . Upon arrival , they were captured when General Martok recognized Sisko . The team later realized that it was not Gowron , but Martok who had been replaced . ( ) Later on , Neelix was cosmetically modified to look like a Ferengi , and portrayed himself to be the Grand Proxy in an attempt to convince Arridor and to relinquish their hold on Takar II . ( ) In 2374 , Quark agreed to have his gender and appearance altered by Doctor Bashir to convince Nilva , chairman of Slug - o - Cola , that Ferengi females were intelligent and deserved certain rights in the Ferengi Bill of Opportunities . He was later changed back to a male . ( ) In the same year , a pack of Hirogen ships successfully claimed the starship and forced some of the crew to participate in vast holodeck hunting simulations . Certain personnel were surgically altered to appear like Klingons , including Neelix and Captain Kathryn Janeway . ( ) In 2375 , Damar arranged for Dukat to be surgically altered into a Bajoran . Under the false identity Anjohl Tennan , he gained the confidence of Kai Winn Adami in an attempt to free the Pah - wraith s from their prison . ( ) Later that year , Neelix used a dermal regenerator to create a " pretty authentic " plasma burn on Seven of Nine to try and deceive the series 5 long - range tactical armor unit who suppressed The Doctor ' s programming and took control of his holomatrix . Neelix touted himself as the " chief cosmetics officer " , to which Tom Paris said that maybe the captain would promote Neelix to " senior beautician " . ( ) In 2377 , most of the stranded crew of " Voyager " was captured and brainwashed . The crew was then put to work on the planet Quarra to compensate for a labor shortage . The Doctor cosmetically altered the appearance of Chakotay so that he would be able to enter the planet without arising suspicion . Unfortunately , he was captured and identified while trying to rescue Torres , who was nearing the end of her pregnancy . ( ) Other alterations . Shapeshifter races usually had the ability to manipulate their entire physical state and appearance as they saw fit . These included Odo and other Changeling s , races like Chameloid s , Allasomorph s , and individuals like Garth of Izar . ( ; ; ; ) Around the same time , Cardassian forces genetically altered one of their operatives , Seska , to appear Bajoran and infiltrate the Maquis . ( ) After Seven of Nine was torn from the Borg Collective in late 2373 , The Doctor restored most of her Human biology and appearance , but she still had some visible Borg technology left behind . Further attempts to remove the last of her Borg implants proved hazardous to her health . ( ) In 2376 , The Doctor had his program modified so that he could appear like the inhabitants of a planet rotating 58 times per minute and determine if there was a way for " Voyager " to escape its orbit . ( ) In 2378 , The Doctor maintained the ability to copy the outer appearance of others by downloading their physical parameters into his holomatrix . ( ) Later in the same year , The Doctor used medical techniques to begin transforming Ensign Lyndsay Ballard , who had been killed during an away mission and resurrected by the Kobali , back to Human form , including her hair . ( ) " In an alternate future , Data modified his hair to add a gray color to part of it in order to look older . " ( ) Memorable quotes . " " They don ' t like you , Mr . Darvin ! I wonder why ? Bones ? " " " " Heartbeat ' s all wrong . . . blood pressure is – Jim , this man is a Klingon ! " " " " Be careful , android ! Some Romulan beauty might take a liking to you ! Lick that paint right off your ears . " " " " This is not going to work . It is not enough to look like a Klingon , one must act like one . Perhaps it would be better if I went by my . . . " " " " Are you questioning the validity of my plan ? ! " " " " Very convincing , captain . But was it your intention to challenge me to a battle to the death ? " " " " Not at all . " " " " Then next time do not strike me with the back of your hand . Use your fist . " " " " The Doctor thought I should stick to my original [ hair ] color , but this seemed more exciting . " " " " Hair is one of my specialties , despite evidence to the contrary . " "