History Monster / StarTrek

* Redjac is a non-corporeal being that [[EmotionEater fed on fear and terror]], but enjoyed causing fear just as much as the actual consumption of it. Introduced in season 2 of the original series, in "[[{{Recap/StarTrekS2E14WolfInTheFold}} Wolf in the Fold]]", Redjac had the ability to [[PuppeteerParasite take a humanoid host]], and [[HistoricalRapSheet used these hosts for centuries to commit mass murders]], most notably as UsefulNotes/JackTheRipper. It [[HeManWomanHater targeted women]] because their deaths tended to generate more fear, and was responsible for dozens of deaths across multiple planets, and almost certainly countless more, as it [[HistoricalRapSheet claims to have existed since the dawn of time]]. In the episode, Redjac murders three women and [[FrameUp frames Scotty]] for all of them. When it’s discovered, it takes control of the Enterprise’s computers and attempts to kill everyone on-board, cackling all the while. While it appears to have been defeated, it reappeared in both the [[Creator/DCComics DC]] and Creator/{{Wildstorm}} comics. In the DC two-parter, "Wolf on the Prowl" and "Wolf at the Door", it commits several more murders in the body of an Enterprise crewperson, had established itself as the "God of Evil" on a primitive planet, and killed thousands of said planet’s inhabitants to give itself power in a last-ditch effort to get revenge on Kirk by destroying the Enterprise. In the Wildstorm comic "Embrace the Wolf", based on the [[Series/StarTrekTheNextGeneration TNG]] universe, it provoked an all-out nuclear war on a peaceful Federation planet, and challenged Data in his Sherlock Holmes persona to save his fellow crew members while Redjac took up its mantle once again as Jack the Ripper. Acting less as a senseless predator and more as a psychotic {{serial killer}} on a galactic level, Redjac is one of the worst that Star Trek has to offer.

[[AC:TV Series]]
* ''Series/StarTrekTheOriginalSeries'':
** Melakon from season 2’s "[[Recap/StarTrekS2E21PatternsOfForce Patterns of Force]]" was a devotee of [[ThoseWackyNazis Nazism]], which was introduced to his people by a former Starfleet officer named [[WellIntentionedExtremist John Gill]] in an attempt to soften it. Shunning the attempt to water down [[UsefulNotes/AdolfHitler Hitler's]] philosophy, Melakon decided to embrace Hitler's path. [[TheStarscream He overthrew his mentor]] and formed a fascist regime on his homeworld Ekos while trying to organize a [[FinalSolution new holocaust]] on a neighboring planet called Zeon. Before murdering his mentor, Melakon was denounced by him as nothing more as a self-seeking adventurer, a traitor to his people and all they stood for.
** Gorgan from season 3's "[[{{Recap/StarTrekS3E4AndTheChildrenShallLead}} And the Children Shall Lead]]" is an evil EnergyBeing and the last surviving member of a race of marauders who were destroyed by those whom they had victimized. Gorgan [[SealedEvilInACan sealed himself into a cave]] and waited for an opportunity to strike. That opportunity came when a small team of Federation scientists arrive on Gorgan's planet to set up a colony. Gorgan [[AFormYouAreComfortableWith took the form]] of a [[OurAngelsAreDifferent "friendly angel"]], manipulating the children into becoming his minions and using his MindControl powers to [[PsychicAssistedSuicide drive all the adults to suicide]]. After the Enterprise comes upon the colony, they take the children aboard the ship. Gorgan convinces the children to use the mind control abilities he has granted them to take over the ship and send it to Marcos 12, a heavily populated Federation colony. When they arrive, Gorgan plans to make all the children of Marcos 12 his minions and [[ThereAreNoAdults kill all the adults]]. Gorgan forces the crew of the Enterprise to comply with [[KidsVersusAdults his plan]], by [[IKnowWhatYouFear exposing them to their worst fears]] if they don't. After several failed attempts to regain control of the ship, Kirk manages to summon Gorgan and [[ShatteringTheIllusion break his hold on the children]]. Enraged, Gorgan threatens to [[WouldHurtAChild kill the children]] if they don't obey him.
* ''Series/StarTrekTheNextGeneration'':
** Kivas Fajo, from season 3's "[[Recap/StarTrekTheNextGenerationS3E22TheMostToys The Most Toys]]", is a CollectorOfTheStrange with the attitude of a [[PsychopathicManchild sociopathic brat]], who uses his job as a trader to cover for his thievery of unique and valuable objects. After desiring to add Data, the only known sentient android in the galaxy to his collection, he [[WaterSourceTampering poisons an inhabited planet's water supply]] so [[PoisonAndCureGambit he can kidnap Data and cover it up as an accidental death while trading over the antidote]]. When Data is in his care, Fajo [[ItIsDehumanizing doesn't care about his sentience]] and degrades and humiliates him into catering to his whims, insistent that he's just another shiny object. When Data refuses to comply, Fajo eventually forces him to obey by threatening to kill his broken, co-dependent slave girlfriend Varria with a [[DeathRay Varon-T Disruptor]], which is illegal to carry in the Federation due to the [[AgonyBeam agonizingly slow and torturous]] way it kills its targets from the inside out. When Varria helps Data escape, Fajo murders her with it and [[NeverMyFault pins the blame on Data]]. He then threatens to continue killing more of his own servants if Data keeps refusing to obey him, and even dismisses Varria's death by stating that he can easily find a replacement. Among the series's [[VillainOfTheWeek Villains of the Week]], Kivas Fajo is without a doubt among the worst.
** Jev from season 5’s "[[Recap/StarTrekTheNextGenerationS5E12Violations Violations]]" was a [[MindRape serial mind rapist]]. Jev was part of a Ullian delegation, led by his father Tarmin, that specialized in telepathic memory retrieval, a process that restores lost memories. Jev first assaulted Counselor Troi by using his telepathic powers to rewrite her memories of a romantic moment between her and Riker into a rape and then replacing Riker in the memory. She fell into a coma after a mental attack. Later he assaulted Commander Riker and Dr. Crusher, making them experience their worst nightmares to keep them from exposing him. When Troi regained consciousness and can't remember her attacker, Jev "helps" by using the memory retrieval process and uses it to frame his father Tamrin, who is arrested. Then he goes to Troi's quarters, ostensibly to apologize for his father, but really to rape her again. This time she's able to hold him off long enough for Worf and his security team to arrive and he's finally brought to justice. What makes Jev even worse is that it's established the crew of the Enterprise are simply the latest in a very long line of his victims, with Geordie and Data's research turning up multiple cases of people who he left in comas, dating years back and spanning several different planets.
* ''Series/StarTrekEnterprise'': Season 3's [[StoryArc Xindi Arc]] is [[DarkerAndEdgier already dark]], but [[ArcVillain Commander Dolim]] stands out as one of the darkest villains on the show. Dolim was the leader of the [[ReptilesAreAbhorrent Reptilian faction]] of the Xindi civilization. When interdimensional aliens known as the [[BiggerBad Sphere Builders]] want to conquer the future by making sure TheFederation never exists, they lie to Xindi, telling them that humans will destroy their civilization in the future. The Xindi launch an attack on Earth, which causes the deaths of 7 million humans. [[WellIntentionedExtremist While most of the Xindi leaders]] express regret over [[IDidWhatIHadToDo what they have done]], but see it as a {{necessary evil}} to save their civilization, Dolim revels in the fact that he helped to kill so many humans, [[EvilGloating gloating]] to Archer that he personally selected the pilot of the probe that attacked Earth. When Archer presents evidence that the Sphere Builders are lying, many of the reasonable Xindi leaders are convinced, but [[GeneralRipper Dolim will not even consider the evidence]]. Dolim kills Degra, the Xindi primate scientist who designed the sphere probe, for helping Archer and promises to hunt down Degra's family after he has destroyed the Earth. Dolim also [[ColdBloodedTorture uses torture]] to get cooperation from [[NoHoldsBarredBeatdown Archer]] and [[PuppeteerParasite Hoshi]]. Dolim loses any pretense of noble intentions when the Sphere Builders convince Dolim to continue with the mission to destroy Earth, promising him they will make the Reptilians rulers of a new Xindi Empire if he succeeds. The Reptilians and Insectoids hijack the Sphere probe, with the intention of using it to wipe out all life on Earth. When his Insectoid allies begin to question this mission, [[YouHaveOutlivedYourUsefulness Dolim has their ship destroyed without a second thought]], believing they were no longer necessary.

[[AC: Video Games]]
* ''VideoGame/StarTrek25thAnniversary'':
** Though most [[ProudWarriorRaceGuy Klingons]] have a code of honor that makes them sympathetic, [[InsaneAdmiral Admiral]] Vlict Kenka takes his to [[KnightTemplar a terrifying extreme]]. Vlict was the governor of the Klingon colony Hrakkour . A [[SufficientlyAdvancedAlien powerful being]] known as [[Myth/AztecMythology Quetzalcoatl]] comes to Hrakkour and starts spreading a pacifistic philosophy among the population. Feeling that the Klingons on Hrakkour have been corrupted by outside ideas, Vlict orders everyone on Hrakkour to be killed, including his own family. Realizing he has gone far beyond his orders to deal with the situation and wanting to avoid punishment from the Klingon High Council for his genocidal crimes, Vlict [[NeverMyFault blames Quetzalcoatl]] for the destruction of Hrakkou and puts him on [[KangarooCourt trial]]. Kirk demands Quetzalcoatl be treated fairly by the trial and personally offers to go through some tests to prove his own worthiness as a warrior, in an effort to defend Quetzalcoatl. However Kirk soon discovers that these tests are designed to kill Kirk and his crewmen, so that Vlict will no longer have to deal with Kirk's inference.
** [[MadScientist Dr. Ies Breddell]] was once part of the science council of Vardaine, a Federation colony. A young Kirk foils Breddell's plan to take over Vardaine and he has held a grudge against him ever since. A decade later Breddell has joined an xenophobic anti-Federation movement on Vardaine and begins an operation to secretly construct starships modeled after the Federation star ships. Breddell creates his own version of the [[EvilKnockOff Enterprise]] and uses it launch sneak attacks on Federation ships. The fake Enterprise attacks the USS Republic and kills everyone on board. After the real Enterprise defeats the fake Enterprise, Breddell is seemingly killed.
* ''VideoGame/JudgmentRites'': In this sequel to [[VideoGame/StarTrek25thAnniversary the previous game]], Dr. Ies Breddell survived, having been transported by a cloaked ship at the last moment. Even more obsessed with [[RevengeBeforeReason revenge]] after another defeat at Kirk's hands, Breddell secretly takes over a Federation space station studying a powerful anomaly. Breddell creates a powerful weapon that uses the power of the anomaly and plans to use it to [[EarthShatteringKaboom destroy Earth]]. Breddell succeeds, but the explosion causes a Federation ship to travel back in time and warn Kirk about this weapon right before the ship explodes. After traveling to the space station and confronting Breddell, Breddell uses FantasticRacism to justify his actions. When Kirk tries to use [[KirkSummation moral arguments]] against Breddell, Breddell states [[TheSocialDarwinist morality is concept invented by the weak to prevent the strong dominating them]] and thus [[ShutUpKirk sees morality as a worthless concept]].
* ''Star Trek: Hidden Evil '': [[BigBad Ratok]] is a Romulan [[InsaneAdmiral Admiral]] who claims to serve the Romulan Empire, but really only serves himself. While dealing with a Son'a rebellion on the [[Film/StarTrekInsurrection Ba'ku planet]], the Enterprise crew discovers the planet is home to a progenitor, [[Recap/StarTrekTheNextGenerationS6E18TheChase the alien race that created most humanoid life in the galaxy]]. Most of the progenitors were destroyed when they created the Xenophore Seed to improve their lives, but instead it created an endless supply of monsters that turned against the progenitors. The progenitors contained the Xenophore Seed but Ratok plans to bring it back for his own selfish purposes. Ratok kills the progenitor and steals the seed. The Enterprise crew find Ratok's secret base in orbit of the Ba'ku planet. There they discover Ratok has merged with the seed, planning to create an army of monsters to conquer the galaxy, not caring how many trillions they kill in the process. The Enterprise crew find a Romulan scientist named Nadol who is [[EvenEvilHasStandards horrified]] by Ratok's murderous plans and vows to help them defeat Ratok. Ratok sends a monster to kill Nadol for ''betraying'' him. Even after the Enterprise crew kill Ratok, the monsters he created continue to cause damage.
* ''VideoGame/StarTrekBridgeCommander'': [[InsaneAdmiral Legate]] [[BigBad Matan]] is the leader of House Arterius, a powerful military faction in [[Series/StarTrekDeepSpaceNine post Dominion War Cardassia]]. Matan manages to make contact with the Kessok, a powerful but xenophobic species in the Maelstrom sector. Matan [[ManipulativeBastard convinces]] the Kessok that the Federation is planning to invade their territory and gets their help to build a new high tech Cardassian military fleet. Matan says he is just using this fleet to protect the Kessok's borders, but has more sinister purposes in mind. Matan experiments with a Kessok Solarformer, a device that can regulate the energy of a sun, to make a planet more hospitable for colonization. Matan accidentally destroys a Federation colony and causes heavy damage to two other colonies, causing a [[StarKilling sun to go supernova]], while he tried to weaponize the Solarformer. Matan felt no guilt about this, having his ships attack anyone who investigated this event, to hide his involvement. Matan also begins to have his fleet attack any non-Cardassian ships in the sector, even having his ships launch an unprovoked attack on a Federation starbase. Matan eventually declares war on the Federation, stepping his attacks on non Cardassian ships in the sector, killing countless people in the process. After most of his forces are defeated, [[PlayerCharacter the Captain]]'s ship and allies confront Matan near a Kessok colony. Matan declares the colony Cardassian territory and orders his remaining forces to attack said ship and allies. With his remaining forces defeated and his dreams of conquest thwarted, Matan decides to use another Solarformer to cause the sun in the solar system to go supernova, killing his enemies, [[YouHaveOutlivedYourUsefulness his supposed Kessok allies]] and [[BadBoss his own forces]], all at once, [[SoreLoser rather then admit defeat]].
* ''VideoGame/StarTrekKlingonAcademy'': [[BigBad Melkor]], [[IAmXSonOfY son of G'Iogh]], is a member of the House of G'Iogh, a powerful family within in the Klingon Empire. Though most Klingons have a a sense of honor, Melkor is defined by his [[DirtyCoward cowardice]] and willingness to use treachery to get ahead. After his brother is killed trying to start a coup against the Klingon High Council, Melkor devises a far more ambitious plan to seize control of the Empire. When the elderly Chancellor of the Empire dies, Melkor claims the title of [[TheEmperor Emperor]] and starts a Civil War to seize power. Melkor is opposed by Gorkon, the rightful successor to the Chancellor's office, and [[Film/StarTrekVITheUndiscoveredCountry General Chang]], a hardliner anti-Federation officer, who realizes Melkor's rule would be a disaster for the Empire. Melkor manages to conquer a Klingon star base, which Chang liberates. However, Melkor has rigged the star base to explode, forcing Chang to evacuate as many base personal as he can. The destruction of the star base still results in the deaths of thousands of Klingon officers. Melkor then conquers the Tal'Ihnor Gates, a star system that is the Empire's chief source of energy. Though Chang's and Gorkon's forces defeat Melkor's forces at Tal'Ihnor, Melkor has one of his officers activate a doomsday weapon, destroying the entire star system. Melkor would rather see the Tal'Ihnor system destroyed then [[SoreLoser fall into Chang's hands]], an act of [[EvilIsPetty spite]] that kills untold Klingons, including [[BadBoss several of his own troops]]. Melkor loses all support within the Klingon Empire, but convinces the Romulans to back his claim, leading a Romulan invasion of the Klingon home world. Though Melkor is ultimately defeated and killed, his failed scheme leaves untold Klingons dead and severely cripples the Empire.
* ''VideoGame/StarTrekLegacy'': [[BigBad T’Uerell]] seems like just a typical Vulcan scientist at first, but she quickly becomes something far more sinister. In the 22nd century, Captain Archer is ordered by the Vulcans to retrieve T'Uerell. Archer saves T'Uerell from some Romulan ships and T'Uerell asks Archer to see her research space station. T'Uerell goes to the station, collects her work and then blows up the station, killing everyone on board before escaping. Archer then deals with a plot by the Romulans to attack Earth with [[SyntheticPlague biological weapons]]; they test these weapons on nearby planets, killing several billion people. Archer suspects T'Uerell helped develop these biological weapons for the Romulans. T'Uerell reappears in the 23rd century, working with the Klingon Empire to create a particle beam weapon to destroy the Federation. Kirk catches up with T'Uerell later, discovering T'Uerell's real allies are Borg-it is heavily implied she had an hand in creating them-and she is allowing the Borg to assimilate some of the Klingon Ships. T'Uerell has created a prototype of Borg Sphere and plans to use it to attack the Federation. Kirk manages to destroy the Sphere, but again T'Uerell escapes. T'Uerell resurfaces in the 24th century, being chased by Romulan ships after attacking one of their worlds. To get the Romulans off her back, T'Uerell destroys an nearby uninhabited world. However, debris from the destroyed planet is heading towards inhabited worlds, threatening the lives of millions. Years later, T'Uerell has returned again and puts her master plan into action: she has taken over the Borg Collective and wants to [[AssimilationPlot assimilate the entire galaxy]], believing [[TheEvilsOfFreeWill free will to be chaotic and illogical]], and [[ControlFreak wanting to enforce her version of logic and perfection on the galaxy]].
* ''VideoGame/StarTrekOnline'': [[BaldOfEvil Colonel Hakeev]] of the Romulan [[StateSec Tal Shiar]] abducted entire colonies of innocent Romulans for horrific experiments into Borg technology; attempted to massacre most of the "inferior" Remans and drive the rest back into slavery; arranged sadistic [[GladiatorGames gladiatorial events]] to determine the combat potential of various species sentient or otherwise; and was the person truly responsible for triggering the Hobus supernova, with all its [[EarthShatteringKaboom apocalyptic consequences]]. In addition, he's the only Iconian agent in the story who is NotBrainwashed and not tricked either. He just enjoyed the thought of enslaving and exterminating the "[[FantasticRacism lesser races]]" at the behest of his "Dark Masters".

[[AC: Literature]]
* ''Literature/StarTrekFederation'': [[BigBad Colonel Adrik Thorsen]] of the [[ANaziByAnyOtherName Optimum Movement]] [[EstablishingCharacterMoment commits a one-sided massacre of civilians]] and [[FictionalUnitedNations New United Nations]] peacekeepers aboard a space station in order to steal a ship for a trip to the outer solar system; he then [[BadBoss kills his own foot soldiers]] so that he can take all the credit. After a TimeSkip, he's the public face of the Optimum in Britain and is orchestrating mass executions of civilian demonstrators and anyone who doesn't match up to the Optimum's idea of what humans should look like. He captures and tortures Zefram Cochrane and a pair of Resistance operatives in pursuit of a superweapon, the so-called warp bomb, that according to a lengthy lecture by Cochrane on warp physics is actually impossible. After Cochrane and the Resistance nearly kill him in their escape, Thorsen is rebuilt with nanotech and becomes obsessed with payback. After another TimeSkip he has Cochrane's wife and students murdered. After a third TimeSkip he manipulates the Klingons and the Orion Syndicate into kidnapping Cochrane and taking a starliner full of civilians hostage--Kirk's crew rescues them, but not before they [[ThrownOutTheAirlock space one of the hostages]]--and orders a cruiser to fly into a black hole after Cochrane's shuttle. After a final TimeSkip, he hijacks the ''Enterprise''-D and sends her into the same black hole to get Cochrane.
* ''Literature/TheQContinuum'': [[MadScientist 0]] is a nearly omnipotent extradimensional entity with a penchant for torturing and exterminating "lesser" species under the guise of testing them. Having been exiled from his home plane eons ago, he [[ManipulativeBastard manipulated]] a young Q into letting him into the Milky Way galaxy and guiding him to more "subjects". He attempted to enslave the Coulalakritous energy beings for warp speed transportation, and in response to their successful resistance [[AndIMustScream he compressed them into a lump of ice (which they remained as for 2,000 years)]], only stopped from going even further by Q’s own intervention. Gathering a group of similar beings, 0 had them engineer a decades-long civil war in the Tkon Empire, and after the Tkon managed to make peace, he personally sped up the death of their sun, consuming all seven trillion inhabitants, for which the Q Continuum banished him from the galaxy. In the present, 0 manipulates a scientist into breaching the galactic barrier to allow him to continue his depredations as well as take revenge on Q for turning on him.

* ''Literature/StarTrekVoyagerRelaunch'' novels ''Acts of Contrition'' and ''Atonement'': [[InsaneAdmiral Commander Jefferson Briggs]] is an officer with Starfleet Medical assigned to find a cure for the mysterious [[ThePlague catom virus]]. He quickly realizes that he accidentally started the virus when he killed a Borg just as the [[SufficientlyAdvancedAliens Caeliar]] were [[AscendToAHigherPlaneOfExistence ascending them to a higher level of existence]], causing the catoms transforming it to bond with an airborne virus and mutate it. However, since Briggs sees the Caeliar as a threat to the Federation, he decides to try and control catoms under cover of supposedly searching for a cure. In fact, instead of quarantining the plague and allowing it to burn out, he [[SyntheticPlague deliberately spreads it]] to other Federation worlds, killing thousands. He has already used illegal genetic engineering to create a member of an extinct species whose genome he has been studying and creates 1,961 copies of her, most of which he kills by experimenting on them with catoms. He uses dubious means to co-opt a number of former Borg drones, including [[WouldHurtAChild children of former drones]], as a new source of catoms and, when he learns they [[ImHavingSoulPains feel the pain of the experiment subjects killed by their catoms]], is quick to use it as a [[MindRape means]] of ensuring their co-operation. In the end, the only solution the Federation can come up with is to [[TheAlcatraz imprison him somewhere where he'll never be heard of again]].

[[AC:Comic Books (not including Redjac)]]
* ''ComicBook/StarTrekDCComics'': Pitkemeni is the [[CorruptBureaucrat Minister of Justice]] for Pilkor III, a small isolationist world on the border between the Federation and the Romulan Empire. Pitkemeni is a major player in a GovernmentConspiracy to take Pilkor III from a small xenophobic planet to a major player in galactic affairs. Pitkemeni and other government officials kidnap 100 random citizens of Pilkor III, put implants in their brains to give them FalseMemories and place them on a colony on another world. Pitkemeni's forces [[FalseFlagOperation disguise themselves as Romulans]] and attack the colony, killing almost everyone there. Pitkemeni then [[IHaveYourWife kidnaps Tred Kegin]], the husband of Victoria Leigh, a human living on Pilkor III, who is an old friend of Captain Kirk. Pitkemeni threatens to kill Tred, unless Leigh lures Kirk and the Enterprise to the site of the destroyed colony. Pitkemeni is hoping to frame the Romulans for this crime, so that the Federation will declare war on the Romulans to head off a new Romulan offensive. Pitkemeni hopes this war will destroy every Romulan and Federation colony in the sector, so that Pilkor III can colonize the sector.
* ''Divided We Fall'': In this Creator/WildStorm crossover between Series/StarTrekTheNextGeneration and Series/StarTrekDeepSpaceNine, Verad, the villain from [[StarTrekDeepSpaceNineS02E04InvasiveProcedures a previous story]] has returned and [[FromNobodyToNightmare become something far worse]]. After losing the Dax symbiont, Verad has grown to hate the symbionts and the Trill that are joined to them. [[NotSoWellIntentionedExtremist Verad paints himself as a revolutionary who sees the symbionts as invaders]] and wants to rid the Trill homeworld of them, recruiting a small group of terrorists to help him. Verad kidnaps a friend of Ezri Dax to lure her to the Trill home world. Torturing her and the symbiont, Verad plans to kill her, but she escapes. [[BadBoss After killing one of his terrorist supporters]] for giving him news he does not like, Verad orders some of his terrorist supports to kill several symbionts in a cave. The Enterprise and Defiant crews thwart this attack, but Verad moves on to his next scheme. [[SyntheticPlague Verad has made a plague]] that will kill any symbionts and joined Trills, and has made him himself the carrier. Verad uses a transporter to visit several places on the Trill home world, killing any joined Trill that happen to be there. When confronted by authorities, Verad blows himself up, spreading the plague across the planet. But before he died, Verad reprogrammed the planet's defense drones and uses to them to try to kill any joined Trill that survive his plague, [[{{Hypocrite}} not caring how many non-joined Trill die in the process]].
* ''ComicBook/StarTrekIDW'':
** Featured in the arc "The Q Gambit", the [[Film/StarTrek Kelvin Universe]] version of [[InsaneAdmiral Gul Dukat]] is just as dangerous as his [[Series/StarTrekDeepSpaceNine Prime counterpart]], [[AdaptationalVillainy with none of the redeeming qualities]]. Q travels to the Kelvin Universe and sends Kirk and the Enterprise crew into the future. The Dominion has conquered most of the galaxy and as usual Dukat is a major commander in the Dominion, ruling over the planet Bajor from his space station, Terok Nor. When the Enterprise arrives in the future, Dukat's forces capture it and Dukat imprisons the crew. Sisko frees Kirk, but Spock and Bones are sent to a labor camp on Bajor. Kira, another resistance leader, frees Spock and Bones from the camp, and shows them an artifact that can change the course of the war. The artifact contains a Pah Wraith and the last Prophet, [[EnergyBeings both powerful interdimensional beings]], one good, one evil. The resistance is betrayed by Quark, a merchant that works with them, and Dukat captures the artifact, along with Bones, Spock and Kira. Dukat smashes the artifact, allowing the Pah-Wraith to possess him; the Prophet tries to possess Kira, but Dukat [[spoiler:murders her]]. Believing the Prophet was destroyed, Dukat takes control of the Enterprise and takes it to the wormhole. [[BadBoss Dukat murders a Vorta commander who demands to know what is going on]] and cows the rest of the crew into helping him. Dukat meets with the other Pah Wraiths in the worm hole and says that with the Prophet gone, nothing can stop them. [[AGodAmI Wanting to become a god]], [[OmnicidalManiac Dukat is willing to help the Pah Wraiths destroy the galaxy in exchange]]. Dukat's mad ambitions are so dangerous, even godlike entities such as Q fear them.
** In the miniseries "Manifest Destiny", [[BigBad the main villain]], a Klingon named Sho'Tokh, is less of a [[ProudWarriorRaceGuy noble warrior]] and more of a [[BloodKnight bloodthirsty brute]]. Rejected by his family for being an albino, Sho'Tokh [[EvilAlbino grew up as a vicious street brawler]]. This viciousness gained him the attention of the Klingon military, which allowed him to join. Sho'Tokh rose through the ranks and was eventually given his own command, as the leader of a military unit filled with other such outcasts, and was sent out to conquer planets for the Klingon Empire. Sho'Tokh's forces invade a planet of bronze age aliens, violently killing anyone who resists them. After conquering the planet, Sho'Tokh orders every able-bodied male and [[SexSlave fertile female]] to made into slaves and everyone else will be killed, [[WouldHurtAChild including the children]]. When one of his lieutenants says [[EvenEvilHasStandards such actions are dishonorable war crimes]], Sho'Tokh [[BadBoss kills him for defying his orders]]. Wanting a new prize, Sho'Tokh lures the Enterprise into a trap with a fake distress signal. He sends several of his troops in space suits to attack the Enterprise’s hull, but later orders his ships to fire on the hull, [[WeHaveReserves not caring how many of his troops died in the process]]. After taking control of the bridge, Sho'Tokh orders his men to kill the Enterprise crew, not caring how many of them die while attempting this task. Sho'Tokh is so vile, even several of his own troops turn against him.

* ''Literature/StarTrekATimeTo'': In the novels ''A Time to Kill'' & ''A Time to Heal'', by David Mack, [[DrunkWithPower Prime Minister Kinchawn]] is the [[PresidentEvil leader of Tezwa]], a minor planet on the border of the Federation and the Klingon Empire. During the [[StarTrekDeepSpaceNine Dominion War]], the President of the Federation provided Kinchawn with a secret array of [[WaveMotionGun nadion-pulse cannons]], to be used against Dominion forces if they ever invaded. Years later, Kinchawn plans to turn Tezwa into a military dictatorship and an empire. Kinchawn declares plans to annex a nearby Klingon planet. The Klingons are enraged, but the Federation convinces them to seek a diplomatic solution. Kinchawn invites the Klingons and the Federation to Tezwa to discuss the matter. The Enterprise and 10 Klingon ships are in orbit of Tezwa, with Picard, Troi and a Klingon representation meeting with Kinchawn on the planet. Kinchawn refuses to apologize and tries to have the 3 of them arrested, killing the Klingon representative in the process. Kinchawn then uses the cannons to attack the ships in orbit, killing 6,000 Klingon warriors. The Klingons counterattack, killing millions on Tezwa. Kinchawn's outrages prompt the Klingons to send an invasion force to conquer Tezwa, that would result in more deaths. After Enterprise manages to disable both the Klingon and Tezwa military fleets and take control of the cannons, the Federation take control of Tezwa and begin a rebuilding and peacekeeping mission. Kinchawn goes into exile and becomes a terrorist, having his supporters engage in terrorist acts against Federation personal on the planet. Worse still, Kinchawn is attacking population centers belonging to the trinae, a racial minority on Tezwa, attempting to commit [[FinalSolution genocide]] against them. Eventually, Kinchawn is defeated, but his terrorist campaign ends up killing thousands of Federation personal and Tezwan civilians.

** Data's [[CainAndAbel brother]] [[PsychoPrototype Lore]] is a thoroughly unsympathetic android who kills his creator, [[BigBrotherBully reprograms his brother to follow his every command]], and threatens to set teenage Wesley on fire. He summoned the Crystalline Entity to his creator's colony when the other colonists petitioned Noong to deactivate him out of fear that he would turn on them, and since then, he's been on quest to wipe out all organic life from the universe. If he ever shows affection, it's just to manipulate Data into collaborating. He also tried to make the Borg an even greater threat to TheFederation than they already were. Given everything else we saw of his true nature, it's obvious that he mostly did it for his own sick amusement.

** Kivas Fajo, from season 3's "[[Recap/StarTrekTheNextGenerationS3E22TheMostToys The Most Toys]]", is a CollectorOfTheStrange with the attitude of a [[PsychopathicManchild sociopathic brat]], who uses his job as a trader to cover for his thievery of unique and valuable objects. After desiring to add Data, the only known sentient android in the galaxy to his collection, he[[WaterSourceTampering poisons an inhabited planet's water supply]] so [[PoisonAndCureGambit he can kidnap Data and cover it up as an accidental death while trading over the antidote]]. When Data is in his care, Fajo [[ItIsDehumanizing doesn't care about his sentience]] and degrades and humiliates him into catering to his whims, insistent that he's just another shiny object. When Data refuses to comply, Fajo eventually forces him to obey by threatening to kill his broken, co-dependent slave girlfriend Varria with a [[DeathRay Varon-T Disruptor]], which is illegal to carry in the Federation due to the [[AgonyBeam agonizingly slow and torturous]] way it kills its targets from the inside out. When Varria helps Data escape, Fajo murders her with it and [[NeverMyFault pins the blame on Data]]. He then threatens to continue killing more of his own servants if Data keeps refusing to obey him, and even dismisses Varria's death by stating that he can easily find a replacement. Among the series's [[VillainOfTheWeek Villains of the Week]], Kivas Fajo is without a doubt among the worst.

* ''ComicBook/StarTrekIDW'': Featured in the arc "The Q Gambit", the [[Film/StarTrek Kelvin Universe]] version of [[InsaneAdmiral Gul Dukat]] is just as dangerous as his [[Series/StarTrekDeepSpaceNine Prime counterpart]], [[AdaptationalVillainy with none of the redeeming qualities]]. Q travels to the Kelvin Universe and sends Kirk and the Enterprise crew into the future. The Dominion has conquered most of the galaxy and as usual Dukat is a major commander in the Dominion, ruling over the planet Bajor from his space station, Terok Nor. When the Enterprise arrives in the future, Dukat's forces capture it and Dukat imprisons the crew. Sisko frees Kirk, but Spock and Bones are sent to a labor camp on Bajor. Kira, another resistance leader, frees Spock and Bones from the camp, and shows them an artifact that can change the course of the war. The artifact contains a Pah Wraith and the last Prophet, [[EnergyBeings both powerful interdimensional beings]], one good, one evil. The resistance is betrayed by Quark, a merchant that works with them, and Dukat captures the artifact, along with Bones, Spock and Kira. Dukat smashes the artifact, allowing the Pah-Wraith to possess him; the Prophet tries to possess Kira, but Dukat [[spoiler:murders her]]. Believing the Prophet was destroyed, Dukat takes control of the Enterprise and takes it to the wormhole. [[BadBoss Dukat murders a Vorta commander who demands to know what is going on]] and cows the rest of the crew into helping him. Dukat meets with the other Pah Wraiths in the worm hole and says that with the Prophet gone, nothing can stop them. [[AGodAmI Wanting to become a god]], [[OmnicidalManiac Dukat is willing to help the Pah Wraiths destroy the galaxy in exchange]]. Dukat's mad ambitions are so dangerous, even godlike entities such as Q fear them.

[[AC: Other Works]]

** Kivas Fajo, from season 3's "[[Recap/StarTrekTheNextGenerationS3E22TheMostToys The Most Toys]]", is a CollectorOfTheStrange with the attitude of a [[PsychopathicManchild sociopathic brat]], who uses his job as a trader to cover for his thievery of unique and valuable objects. After desiring to add Data, the only known sentient android in the galaxy to his collection, he[[WaterSourceTampering poisons an inhabited planet's water supply]] so [[PoisonAndCureGambit he can kidnap Data and cover it up as an accidental death while trading over the antidote]]. When Data is in his care, Fajo [[ItIsDehumanizing doesn't care about his sentience]] and degrades and humiliates him into catering to his whims, insistent that he's just another shiny object. When Data refuses to comply, Fajo eventually forces him to obey by threatening to kill his broken, co-dependent slave girlfriend Varria with a [[DeathRay Varon-T Disruptor]], which is illegal to carry in the Federation due to the [AgonyBeam agonizingly slow and torturous]] way it kills its targets from the inside out. When Varria helps Data escape, Fajo murders her with it and [[NeverMyFault pins the blame on Data]]. He then threatens to continue killing more of his own servants if Data keeps refusing to obey him, and even dismisses Varria's death by stating that he can easily find a replacement. Among the series's [[VillainOfTheWeek Villains of the Week]], Kivas Fajo is without a doubt among the worst.

** Kivas Fajo from season 3’s "[[Recap/StarTrekTheNextGenerationS3E22TheMostToys The Most Toys]]" is a CollectorOfTheStrange who wants to add Data, the only known android in the galaxy, to his collection. To do this, he poisons the water supply of an inhabited planet so he can capture him. He treats people and sentient beings like property. Then he talks very matter-of-factly about how he'd like to try out a particularly cruel DeathRay called a Varon-T Disruptor — illegal in The Federation because of how slowly and painfully it destroys the body from the inside out. He later does use it on his girlfriend, who is really more of a broken, codependent slave. As far as ''Star Trek'''s villains of the week go, he's one of the worst.

While ''Franchise/StarTrek'' (including the Franchise/TrekVerse and the Franchise/StarTrekExpandedUniverse) usually gives villains a few redeeming qualities, there are [[CompleteMonster some who lack any at all]], and seem to revel in just how far past the MoralEventHorizon they're willing to go.

* Redjac is a non-corporeal being that [[EmotionEater fed on fear and terror]], but enjoyed causing fear just as much as the actual consumption of it. Introduced in season 2 of the original series, in "[[{{Recap/StarTrekS2E14WolfInTheFold}} Wolf in the Fold]]", Redjac had the ability to [[PuppeteerParasite take a humanoid host]], and [[HistoricalRapSheet used these hosts for centuries to commit mass murders]], most notably as UsefulNotes/JackTheRipper. It [[HeManWomanHater targeted women]] because their deaths tended to generate more fear, and was responsible for dozens of deaths across multiple planets, and almost certainly countless more, as it [[HistoricalRapSheet claims to have existed since the dawn of time]]. In the episode, Redjac murders three women and [[FrameUp frames Scotty]] for all of them. When it’s discovered, it takes control of the Enterprise’s computers and attempts to kill everyone on-board, cackling all the while. While it appears to have been defeated, it reappeared in both the [[Creator/DCComics DC]] and Creator/{{Wildstorm}} comics. In the DC two-parter, "Wolf on the Prowl" and "Wolf at the Door", it commits several more murders in the body of an Enterprise crewperson, had established itself as the "God of Evil" on a primitive planet, and killed thousands of said planet’s inhabitants to give itself power in a last-ditch effort to get revenge on Kirk by destroying the Enterprise. In the Wildstorm comic "Embrace the Wolf", based on the [[Series/StarTrekTheNextGeneration TNG]] universe. it provoked an all-out nuclear war on a peaceful Federation planet, and challenged Data in his Sherlock Holmes persona to save his fellow crew members while Redjac took up its mantle once again as Jack the Ripper. Acting less as a senseless predator and more as a psychotic {{serial killer}} on a galactic level, Redjac is one of the worst that Star Trek has to offer.

[[AC: Others]]
* ''VideoGame/StarTrekOnline'': Colonel Hakeev of the Tal Shiar was already a solid candidate before the release of ''Legacy of Romulus'', and that expansion only confirmed that he's the single most evil character in the game. He abducted entire colonies of innocent Romulans for horrific experiments into Borg technology, attempted to massacre most of the "inferior" Remans and drive the rest back into slavery, arranged sadistic gladiatorial events to determine the combat potential of various species sentient or otherwise, and [[spoiler:was the person truly responsible for triggering the Hobus supernova, with all its apocalyptic consequences]]. To add icing to the cake of concentrated cruelty, he's the only [[spoiler:Iconian agent]] in the story who is NotBrainwashed and not tricked either. He just thought that enslaving and exterminating the [[ANaziByAnyOtherName "lesser races"]] at the behest of his "Dark Masters" sounded really, really awesome.
* ''Literature/StarTrekFederation'': Colonel Adrik Thorsen of the [[ANaziByAnyOthername Optimum Movement]] starts as a [[NoCelebritiesWereHarmed Himmler clone]] and only gets worse. His EstablishingCharacterMoment is a one-sided massacre of civilians and [[FictionalUnitedNations New United Nations]] peacekeepers aboard a space station in order to steal a ship for a trip to the outer solar system; he then kills his own foot soldiers so he can take all the credit. After a TimeSkip, he's the public face of the Optimum in Britain and is orchestrating mass executions of civilian demonstrators and anyone who doesn't match up to the Optimum's idea of what humans should look like. He captures and tortures Zefram Cochrane and a pair of Resistance operatives in pursuit of a superweapon, the so-called warp bomb, that according to a lengthy lecture by Cochrane on warp physics is actually impossible. After Cochrane and the Resistance nearly kill him in their escape, Thorsen is rebuilt with nanotech and becomes obsessed with payback. After another TimeSkip, he has Cochrane's wife and students murdered. After TimeSkip #3 manipulates the Klingons and the Orion Syndicate into kidnapping Cochrane and taking a starliner full of civilians hostage (Kirk's crew rescues them, but not before they [[ThrownOutTheAirlock space one of the hostages]]), and orders a cruiser to fly into a black hole after Cochrane's shuttle. TimeSkip #4, and he hijacks the ''Enterprise''-D and sends her into the same black hole to get Cochrane.

* Redjac, introduced in "[[{{Recap/StarTrekS2E14WolfInTheFold}} Wolf in the Fold]]" from season 2 of ''Series/StarTrekTheOriginalSeries'', is a non-corporeal being that [[EmotionEater fed on fear and terror]], but enjoyed causing fear just as much as the actual consumption of it. Redjac had the ability to [[PuppeteerParasite take a humanoid host]], and used these hosts for centuries to commit mass murders, most notably as UsefulNotes/JackTheRipper. It [[HeManWomanHater targeted women]] because their deaths tended to generate more fear, and was responsible for dozens of deaths across multiple planets, and almost certainly countless more, as it [[HistoricalRapSheet claims to have existed since the dawn of time]]. In the episode, Redjac murders three women and [[FrameUp frames Scotty]] for all of them. When it’s discovered, it takes control of the Enterprise’s computers and attempts to kill everyone on-board, cackling all the while. While it appears to have been defeated, it reappeared in both the [[Creator/DCComics DC]] and Creator/{{Wildstorm}} comics. In the DC two-parter, “Wolf on the Prowl” and “Wolf at the Door”, it commits several more murders in the body of an Enterprise crewperson, had established itself as the “God of Evil” on a primitive planet, and killed thousands of said planet’s inhabitants to give itself power in a last-ditch effort to get revenge on Kirk by destroying the Enterprise. In the Wildstorm comic “Embrace the Wolf”, it provoked an all-out nuclear war on a peaceful Federation planet, and challenged Data in his Sherlock Holmes persona to save his fellow crew members while Redjac took up its mantle once again as Jack the Ripper. Acting less as a senseless predator and more as a psychotic {{serial killer}} on a galactic level, Redjac is one of the worst that Star Trek has to offer.

While ''Franchise/StarTrek'' usually gives its villains a few redeeming qualities, there are [[CompleteMonster some who lack any at all]], and seem to revel in just how far past the MoralEventHorizon they're willing to go.

* ''Series/StarTrekTheOriginalSeries'': Melakon from season 2’s "[[Recap/StarTrekS2E21PatternsOfForce Patterns of Force]]" was a devotee of [[UsefulNotes/NaziGermany Nazism]] introduced to his people in an attempt to soften it by a former Starfleet officer named John Gil. Shunning the attempt to water down UsefulNotes/AdolfHitler's philosophy, Melakon decided to embrace Hitler's path. He overthrew his mentor and formed a fascist regime on his homeworld Ekos while trying to organize a new holocaust on a neighboring planet called Zeon. Before murdering his mentor, Melakon was denounced by him as nothing more as a self-seeking adventurer, a traitor to his people and all they stood for.

** Jev from season 5’s "[[Recap/StarTrekTheNextGenerationS5E12Violations Violations]]" was a [[MindRape serial mind rapist]]. Jev was part of a Ullian delegation, led by his father Tarmin, that specialized in telepathic memory retrieval, a process that restores lost memories. Jev first assaulted Counselor Troi by using his telepathic powers to rewrite her memories of a romantic moment between her and Riker into a rape and then replacing Riker in the memory. She fell into a coma after a mental attack. Later he assaulted Commander Riker and Dr. Crusher, making them experience their worst nightmares to keep them from exposing him. When Troi regained consciousness and can't remember her attacker, Jev "helps" by using the memory retrieval process and uses it to frame his father Tamrin, who is arrested. Then he goes to Troi's quarters, ostensibly to apologize for his father, but really to rape her again. This time she's able to hold him off long enough for Worf and his security team to arrive and he's finally brought to justice.

!!TV Series:

!!Others

* ''Series/StarTrekTheOriginalSeries'': Melakon from season 2’s “[[Recap/StarTrekS2E21PatternsOfForce Patterns of Force]]” was a devotee of Nazism introduced to his people in an attempt to soften it by a former Starfleet officer named John Gil. Shunning the attempt to water down Hitler's philosophy, Melakon decided to embrace Hitler's path. He overthrew his mentor and formed a fascist regime on his homeworld Ekos while trying to organize a new holocaust on a neighboring planet called Zeon. Before murdering his mentor, Melakon was denounced by him as nothing more as a self-seeking adventurer, a traitor to his people and all they stood for.

* ''VideoGame/StarTrekOnline'': Colonel Hakeev of the Tal Shiar was already a solid candidate before the release of ''Legacy of Romulus'', and that expansion only confirmed that he's the single most evil character in the game. He abducted entire colonies of innocent Romulans for horrific experiments into Borg technology, attempted to massacre most of the 'inferior' Remans and drive the rest back into slavery, arranged sadistic gladiatorial events to determine the combat potential of various species sentient or otherwise, and [[spoiler:was the person truly responsible for triggering the Hobus supernova, with all its apocalyptic consequences]]. To add icing to the cake of concentrated cruelty, he's the only [[spoiler:Iconian agent]] in the story who is NotBrainwashed and not tricked either. He just thought that enslaving and exterminating the [[ANaziByAnyOtherName 'lesser races']] at the behest of his 'Dark Masters' sounded really, really awesome.

While ''Franchise/StarTrek'' usually gives its villains a few redeeming qualities, there are some who lack any at all, and seem to revel in just how far past the MoralEventHorizon they're willing to go.

While StarTrek usually gives its villains a few redeeming qualities, there are some who lack any at all, and seem to revel in just how far past the MoralEventHorizon they're willing to go.

* ''Literature/StarTrekFederation'': Colonel Adrik Thorsen of the [[ANaziByAnyOthername Optimum Movement]] starts as a [[NoCelebritiesWereHarmed Himmler clone]] and only gets worse. His EstablishingCharacterMoment is a one-sided massacre of civilians and [[FictionalUnitedNations New United Nations]] peacekeepers aboard a space station in order to steal a ship for a trip to the outer solar system; he then kills his own foot soldiers so he can take all the credit. After a TimeSkip, he's the public face of the Optimum in Britain and is orchestrating mass executions of civilian demonstrators and anyone who doesn't match up to the Optimum's idea of what humans should look like. He captures and tortures Zefram Cochrane and a pair of Resistance operatives in pursuit of a superweapon, the so-called warp bomb, that according to a lengthy lecture by Cochrane on warp physics is actually impossible. After Cochrane and the Resistance nearly kill him in their escape, Thorsen is rebuilt with nanotech and becomes obsessed with payback. After another TimeSkip, he has Cochrane's wife and students murdered. After TimeSkip #3 manipulates the Klingons and the Orion Syndicate into kidnapping Cochrane and taking a starliner full of civilians hostage (Kirk's crew rescues them, but not before they [[ThrownOutTheAirlock space one of the hostages]]), and orders a cruiser to fly into a black hole after Cochrane's shuttle. TimeSkip #4, and he hijacks the ''Enterprise''-D and sends her into the same black hole to get Cochrane.

By Series:

[[Series/StarTrekEnterprise ENTERPRISE]]

* Season 3's [[StoryArc Xindi Arc]] is [[DarkerAndEdgier already dark]], but [[ArcVillain Commander Dolim]] stands out as one of the darkest villains on the show. Dolim was the leader of the [[ReptilesAreAbhorrent Reptilian faction]] of the Xindi civilization. When interdimensional aliens known as the [[BiggerBad Sphere Builders]] want to conquer the future by making sure TheFederation never exists, they lie to Xindi, telling them that humans will destroy their civilization in the future. The Xindi launch an attack on Earth, which causes the deaths of 7 million humans. [[WellIntentionedExtremist While most of the Xindi leaders]] express regret over [[IDidWhatIHadToDo what they have done]], but see it as a {{necessary evil}} to save their civilization, Dolim revels in the fact that he helped to kill so many humans, [[EvilGloating gloating]] to Archer that he personally selected the pilot of the probe that attacked Earth. When Archer presents evidence that the Sphere Builders are lying, many of the reasonable Xindi leaders are convinced, but [[GeneralRipper Dolim will not even consider the evidence]]. Dolim kills Degra, the Xindi primate scientist who designed the sphere probe, for helping Archer and promises to hunt down Degra's family after he has destroyed the Earth. Dolim also [[ColdBloodedTorture uses torture]] to get cooperation from [[NoHoldsBarredBeatdown Archer]] and [[PuppeteerParasite Hoshi]]. Dolim loses any pretense of noble intentions when the Sphere Builders convince Dolim to continue with the mission to destroy Earth, promising him they will make the Reptilians rulers of a new Xindi Empire if he succeeds. The Reptilians and Insectoids hijack the Sphere probe, with the intention of using it to wipe out all life on Earth. When his Insectoid allies begin to question this mission, [[YouHaveOutlivedYourUsefulness Dolim has their ship destroyed without a second thought]], believing they were no longer necessary.


[[Series/StarTrekTheOriginalSeries THE ORIGINAL SERIES]]

* Melakon from season 2’s “[[Recap/StarTrekS2E21PatternsOfForce Patterns of Force]]” was a devotee of Nazism introduced to his people in an attempt to soften it by a former Starfleet officer named John Gil. Shunning the attempt to water down Hitler's philosophy, Melakon decided to embrace Hitler's path. He overthrew his mentor and formed a fascist regime on his homeworld Ekos while trying to organize a new holocaust on a neighboring planet called Zeon. Before murdering his mentor, Melakon was denounced by him as nothing more as a self-seeking adventurer, a traitor to his people and all they stood for.


[[Series/StarTrekTheNextGeneration THE NEXT GENERATION]]

* Data's [[CainAndAbel brother]] [[PsychoPrototype Lore]] is a thoroughly unsympathetic android who kills his creator, [[BigBrotherBully reprograms his brother to follow his every command]], and threatens to set teenage Wesley on fire. He summoned the Crystalline Entity to his creator's colony when the other colonists petitioned Noong to deactivate him out of fear that he would turn on them, and since then, he's been on quest to wipe out all organic life from the universe. If he ever shows affection, it's just to manipulate Data into collaborating. He also tried to make the Borg an even greater threat to TheFederation than they already were. Given everything else we saw of his true nature, it's obvious that he mostly did it for his own sick amusement.
* Kivas Fajo from season 3’s "[[Recap/StarTrekTheNextGenerationS3E22TheMostToys The Most Toys]]" is a CollectorOfTheStrange who wants to add Data, the only known android in the galaxy, to his collection. To do this, he poisons the water supply of an inhabited planet so he can capture him. He treats people and sentient beings like property. Then he talks very matter-of-factly about how he'd like to try out a particularly cruel DeathRay called a Varon-T Disruptor — illegal in The Federation because of how slowly and painfully it destroys the body from the inside out. He later does use it on his girlfriend, who is really more of a broken, codependent slave. As far as ''Star Trek'''s villains of the week go, he's one of the worst.
* Jev from season 5’s "[[Recap/StarTrekTheNextGenerationS5E12Violations Violations]]" was a [[MindRape serial mind rapist]]. Jev was part of a Ullian delegation, led by his father Tarmin, that specialized in telepathic memory retrieval, a process that restores lost memories. Jev first assaulted Counselor Troi by using his telepathic powers to rewrite her memories of a romantic moment between her and Riker into a rape and then replacing Riker in the memory. She fell into a coma after a mental attack. Later he assaulted Commander Riker and Dr. Crusher, making them experience their worst nightmares to keep them from exposing him. When Troi regained consciousness and can't remember her attacker, Jev "helps" by using the memory retrieval process and uses it to frame his father Tamrin, who is arrested. Then he goes to Troi's quarters, ostensibly to apologize for his father, but really to rape her again. This time she's able to hold him off long enough for Worf and his security team to arrive and he's finally brought to justice.

OTHER

[[VideoGame/StarTrekOnline STAR TREK ONLINE]]

* Colonel Hakeev of the Tal Shiar was already a solid candidate before the release of ''Legacy of Romulus'', and that expansion only confirmed that he's the single most evil character in the game. He abducted entire colonies of innocent Romulans for horrific experiments into Borg technology, attempted to massacre most of the 'inferior' Remans and drive the rest back into slavery, arranged sadistic gladiatorial events to determine the combat potential of various species (sentient or otherwise), and [[spoiler:was the person truly responsible for triggering the Hobus supernova, with all its apocalyptic consequences]]. To add icing to the cake of concentrated dickery, he's the only [[spoiler:Iconian agent]] in the story who is NotBrainwashed and not tricked either - he just thought that enslaving and exterminating the [[ANaziByAnyOtherName 'lesser races']] at the behest of his 'Dark Masters' sounded really, really awesome.