Nightmare A nightmare was an unpleasant dream which could create the emotion s of fear or horror within those experiencing it . A dreamcatcher was a component of Native American mythology , used to ward off nightmares . ( ) In 1996 , Highway 101 in Los Angeles was a " nightmare " to drive on in the afternoon , according to Henry Starling . ( ) In the 2250s , Sylvia Tilly remarked that she would have nightmares about herself as a result of learning about her mirror universe counterpart ' s atrocities . ( ) In 2267 , Montgomery Scott referred to his substitute for a PXK pergium reactor on Janus VI as " a plumber ' s nightmare . " ( ) Later that year , Leonard McCoy wondered if Pyris VII was a result of a parallel development with Earth , as it had dungeons , curses , and skeleton s , among other features . James T . Kirk replied that it was more consistent with a Human nightmare . ( ) In his captain ' s log , Kirk noted that he found his crew ' s peaceful investigation of Gamma Trianguli VI to have turned into a nightmare , after Spock was injured and Hendorff was killed by pod plants . ( ) Ensign referred to his first week of active duty under Captain Blackwood of the as a " nightmare . " ( ) In 2365 , Deanna Troi explained to Jean - Luc Picard that a duplicate of himself from the future was seeing things in a nightmare of disjointed and half - heard voices and thus was having trouble answering Picard ' s questions . ( ) In 2367 , Captain Picard experienced nightmares following his assimilation by the Borg into Locutus , but claimed to Troi – prior to his departure to visit his hometown in La Barre , France – that they had gone away . ( ) Later that year , Captain Picard asked his first officer , William T . Riker , if he had experienced any hallucinations or nightmares while the was near the , to which Riker replied that he hadn ' t . ( ) Also that year , Geordi La Forge awoke from a nightmare on the " Enterprise " , in his quarters , after being brainwashed by Romulan s . ( ) In 2368 , asked Data if he had ever experienced a nightmare , to which Data replied that he had never had one , since he did not require sleep . ( ) Later that year , Deanna Troi fell into a deep coma after experiencing a mind rape induced by an Ullian named Jev . After awakening from it , Troi told Captain Picard that it was like waking up from a nightmare and not knowing what it was about . ( ) In 2369 , Julian Bashir screamed several times while trapped inside a Wadi game called " Chula " . Bashir later explained that he was screaming because he thought he was having a nightmare and was trying to wake himself up . ( ) Later that year , Commander Benjamin Sisko urged Golin Shel - la to end the nightmare of the Ennis and the Nol - Ennis fighting and attacking each other on a moon they were all trapped on , in the Gamma Quadrant . ( ) Aamin Marritza , surgically altered to appear as Gul Darhe ' el , menacingly told Major Kira Nerys that he was her nemesis and her nightmare . ( ) In 2370 , Data told Geordi La Forge that he had experienced his first nightmare with his dreaming program . It involved a group of miner s threatening Data and tearing his head off . Later nightmares had Data cut into Counselor Troi as if she were a cake and hearing Sigmund Freud ' s voice on a telephone telling him to " " kill them before it is too late . " " It was later discovered that Data ' s nightmares were induced by interphasic organisms from Thanatos VII , which were later destroyed with an interphasic pulse . ( ) Later that year , Benjamin Sisko told Arjin that field training with Curzon Dax was the nightmare of the initiate corps . ( ) During a poker game with the senior staff of the " Enterprise " - D in 2370 , Geordi La Forge tried calling Commander Riker ' s bluff , but found out Riker had a flush and Riker won the game . La Forge couldn ' t believe it , to which Riker stated , " " I am your worst nightmare . " " ( ) Jean - Luc Picard told Deanna Troi , in the middle of the night on the " Enterprise " - D , that his experience of moving back and forth through time was like waking up from a nightmare . ( ) While in the holoprogram " Julian Bashir , Secret Agent " , Elim Garak referred to 20th century architecture in the 1960s setting as " another decorator ' s nightmare . " ( ) Viorsa told B ' Elanna Torres that The Clown , a figure created by his species ' fear , had killed two of their colleagues . When Torres asked how that was possible as nothing in their environment was real , The Clown told her it was as real as a nightmare , since he had scared the two to death , from massive heart attack s . ( ) B ' Elanna Torres had nightmares even one year later after she was split into two people , a Klingon and a Human , on Avery III . ( ) In 2372 , Worf had a nightmare in which he saw dead Klingon children and civilians on the ' s bridge . Worf had this nightmare because he was accused by the Klingon Empire of murder ing civilians while commanding the " Defiant " and was asked to be extradited . ( ) In 2373 , Jean - Luc Picard awoke from a nightmare about when he had been assimilated by the Borg in 2366 . ( ) Orum told Commander Chakotay , in 2373 , that being freed from the Borg Collective by an electro - kinetic storm was like waking up from a long nightmare . ( ) Later that year , Quark had a nightmare in which he saw the senior staff of Deep Space 9 walking around his bar after being killed and asking why he had killed them . Quark experienced this nightmare because he had gotten into selling illegal weapons with Hagath and his cousin . ( ) In 2374 , the crew of the began to experience nightmares , all containing the same mysterious alien figure , from which they could not awaken . It was discovered that the alien was the cause of the nightmares , as he and his people were seeking revenge against the " waking species " which had harmed them all their life . The dreams ceased when Commander Chakotay threatened the aliens with destruction , forcing them to deactivate the transmitter which kept the crew of " Voyager " asleep . ( ) Later that year , Quark , after being restored to a male from a female Ferengi , noted that the experience of it made him more compassionate , empathetic , and nurturing . Quark later said that he felt like he had been trapped in his worst nightmare . ( ) In 2375 , Neelix woke up from a nightmare in his quarters , due to experiencing nihiliphobia while " Voyager " was trapped in . ( ) Later that year , after being interrogated by the Breen , both Worf and Ezri Dax experienced nightmares they regarded as terrifying . ( ) In 2376 , the crew of " Voyager " experienced " memories " of the Nakan massacre , due to the ship ' s proximity to a memorial which transmitted the experiences to the crew . It was initially thought the experiences were nightmares . ( ) Later that year , Neelix had a nightmare that featured Commander Chakotay assimilated by the Borg , while Neelix , Chakotay , and Tom Paris were trapped on a Borg cube . ( ) Also that year , Crewman Tal Celes claimed to Captain Kathryn Janeway that she sometimes had nightmares in which she was chased by algorithm s . ( ) In 3074 , an EMH backup module of The Doctor , reactivated after seven hundred years , remarked to on what a nightmare it was to see the various inaccuracies of " Voyager " and its crew featured in the Museum of Kyrian Heritage . ( )