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->''[[MegaCorp We create technology.]] [[MadScience How it is used is not our concern.]]''
-->--'''Nina Sharp'''

''Fringe'' (August 2008-January 2013) is a FOX ScienceFiction TV series created by Creator/JJAbrams and his compatriots Alex Kurtzman and Roberto Orci. Other J.J. coworkers from ''Series/{{Lost}}'' and ''Series/{{Alias}}'' are involved as well. Conceptually, it is not unlike ''Series/TheXFiles'', with the primary threat being MadScientist terrorists, instead of an AlienInvasion. In practice it is like ''The X-Files'' [[XMeetsY meets]] ''Series/{{CSI}}''. Like J.J.'s other shows, it has a slowly developing MythArc involving an AlternateUniverse, mysterious "Observers", an ActionGirl, and crazy, off-the-wall happenings right from the get-go. It's quite a MindScrew.

Has a [[Recap/{{Fringe}} Recap page]], and a rather massive [[Characters/{{Fringe}} characters page]].

'''WARNING:''' This page contains a large number of unmarked spoilers. Tropers new to Fringe proceed at your own risk.[[note]]Seriously, don't spoil yourself.[[/note]]
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[[folder:Tropes A-E]]

* AbortedArc:
** Agent Amy Jessup was brought in during the Season 2 opening and looked to be bringing in some religious interpretations to the Fringe cases. She appeared in two episodes then was dropped without a word of explanation.
** During Season 1, Peter was being shadowed by a heavy called Big Eddie, but Peter's shady past was never pursued past the middle of the season.
** While Olivia's abusive stepfather was alluded to a few times and even appeared in a Season 3 flashback episode, the idea of him stalking Olivia in the present was dropped after Season 1. [[spoiler:(Amber!Olivia says that she killed him, but doesn't go into any other details)]]
** At the very end of Season 3's "Lysergic Acid Diethylamide", [[spoiler:Olivia claims that the mysterious man in the blimp is the person who's going to kill her.]] [[LampshadeHanging Take a wild guess where that went.]]
* AboveGoodAndEvil: In the episode Amber 31422, [[AlternateUniverse the other Walter Bishop]], [[AlternateUniverseReedRichardsIsAwesome the inventor of the titular substance]], says to Broyles: "Nature doesn't recognize good and evil, Philip. Nature only recognizes balance and imbalance. [[OrderVersusChaos I intend to restore balance to our world]]. [[WellIntentionedExtremist Whatever it takes]]."
* AbsenceOfEvidence: Discussed in "The Consultant". Fauxlivia is trying to find the one responsible for [[spoiler: Lincoln's murder]] and can't find any evidence. Walter refers to "the dog that didn't bark". It falls a little flat since there is no Franchise/SherlockHolmes in the AlternateUniverse.
* AbsurdlySpaciousSewer: Subverted in "Unleashed" as they are specifically referred to as "Storm Drains" several times, and only as "Sewers" peripherally, presumably because ViewersAreMorons
* AccidentalMisnaming:
** Walter can never remember Astrid's name. The things he's called her thus far include such gems as Astral, Asterisk, Australis, Asteroid, Ostrich, and Ashram.
---> '''Walter''': "Astral!"\\
'''Astrid''': "My name is ASTRID."\\
'''Walter''': "...Projection! Astral projection!"
** Subverted in "What Lies Below" (2x12) when he says Ash, but it turns out it's his EurekaMoment.
** It looks like he's finally about to get her name right in "Brown Betty" when he's about to name her character in the story he's telling... but at the last second he names her [[DoubleSubversion Esther Figglesworth]]. Astrid's look of pure exasperation is priceless.
** He ''does'' get it right in "The Road Not Taken" (1x19) - so naturally she wasn't there to hear it (he was alone in the lab at the time).
--->'''Walter''': "Oh Astrid, I've found it."
** He also remembers in "Snakehead" (2x09) -- when he's worried sick that he got her followed by gang members. She's not around then, either.
** And, as of "The Box," [[RunningGag we're back]]:
--->'''Walter''': Aspirin, we need to go to the market!
** He finally gets it right, to her face, in "Do Shapeshifters Dream of Electric Sheep?", to her surprise. To ''both'' of their surprise, actually. Walter suggests it's because he's on a different blend of drugs at the time.
** In response to Walter calling her Astro for the hundredth time, she calls him Wallie (3x19). The look on Walter's face is amazingly hilarious.
** He gets it right again in "The Last Sam Weiss" - but only after being struck by lightning twice.
** As of 4x02, it looks like [[spoiler:Lincoln]] is gonna join the party too.
--->'''Walter''': Kennedy, help me!
*** [[JohnFKennedy Wrong]] [[UsefulNotes/AbrahamLincoln President.]]
** "Really? Claire? That doesn't even start with an A!"
** In "Making Angels" (4x11), Walter gets AlternateUniverse Astrid's name right.
** He gets it right in the season finale, at the conclusion of a total tearjerker moment:
--->'''Walter''': It's a beautiful name.
--->'''Astrid''': What is?
--->'''Walter''': Astrid.
* ActionGirl:
** Olivia Dunham. "Bound" ''will'' dispel any doubts on this count.
** Altlivia definitely qualifies.
** [[spoiler: Henrietta Bishop]] takes after her parents.
* ActingForTwo: All of the characters who have doubles on the other side.
* ActorAllusion:
** Peter mentions the remake of ''InvasionOfTheBodySnatchers'' to Olivia. This version starred Leonard Nimoy, who plays William Bell.
** Walter's research on LSD-induced hallucinations that can grant the subject clairvoyance is similar to the plot of the book (and later film) ''AlteredStates''. The film version starred Blair Brown, who plays Nina Sharp.
** Among William Bell's books in the episode "Concentrate and Ask Again" is a copy of a book by Dr. Spock. Another Leonard Nimoy reference.
** Peter and Olivia meet with a conspiracy theorist who believes himself to be Spock from ''Franchise/StarTrek''. You should already know who played Spock. More of a Director Allusion, but the story that he tells is somewhat similar to the plot line of ''Film/StarTrek''. However, this was probably intentional as the episode aired in the opening week of the film, and therefore was used to promote it in the process.
** The episode "Stowaway" involves a woman named Grey who is suicidal after losing her family. The climax of the episode involves a train bombing. [[HeyItsThatGuy Who was she played by?]] [[{{Caprica}} Amanda Greystone]].
** The Season 4 finale featured [[Series/{{Lost}} another character]] played by Rebecca Mader who near death starting talking like a child. Albeit this time Mader's character's mind reverted to a child's after death, not prior to it.
** Walter is fixated on the death of his son to the point of insanity. Rather like John Noble's character in {{Lord of the Rings}}
** In the fourth season, when David Robert Jones is arrested, they briefly note that they called the Scotland Yard because of his accent. [[{{Film/SherlockHolmes}} Jared Harris has faced the Scotland Yard before]].
** [[{{Series/StargateAtlantis}} Joe Flanigan being killed by a lifeforce vampire]] in his Season 4 appearance can't be a coincidence.
* AdultFear: Most of the events of the series occur because scientist father Walter Bishop watched [[spoiler: his only son die of a childhood illness]] and couldn't bring himself to let it happen again in the parallel universe.
* AllGermansAreNazis: "The Bishop Revival" featured a very stereotypical German (round glasses, hairstyle, clothing, accent) who is revealed to be an original Nazi. And guess what he was doing! Trying to create a virus for eugenics, of course! The same episode reveals Walter and Peter's German background, which has to be something of an aversion in that while their ancestor ''was'' a Nazi scientist, he actually worked as an Allied spy, subverting the war effort behind the lines.
* AllTheoriesAreTrue: The entire premise of the show.
* AlmostKiss: [[spoiler:Peter and Olivia have one of these in "Jacksonville" (2x16).]]
* AloneWithThePsycho: Olivia ends up alone with the guy with the cancerous touch.
* AlternateUniverse: A huge part of the show's central mythology.
** And if you thought that was bad, now we have an established AlternateHistory since the start of Season 4. In both universes.
* AlternateUniverseReedRichardsIsAwesome: Walternate.
* AlwaysClose: In "Enemy of My Enemy", 4x09, [[spoiler:Olivia tries to chase Jones through to the Other Side in her SUV. Peter warns her about the risk of a PortalCut, and she barely stops her car in time because of it. The entire front of the engine is cut off, and moments later that would've included her as well.]]
* [[AmazinglyEmbarrassingParents Amazingly Embarrassing Father]]: Peter visibly cringes whenever his father makes an embarrassing non-sequitur.
* AmbiguousDisorder: Alternate Astrid appears to have traits of Asperger's or High Functioning Autism; her actress has stated that the portrayal is based on some of her own Autistic sister's behaviors; her trouble relating to others is even the focus of one episode.
* AmbiguouslyHuman: The Observers, at first. It's eventually revealed that [[spoiler: they are human, or at least, they once were]].
* AmnesiacDissonance: Walter. Even he admits that going crazy was honestly the ''best'' thing that ever happened to him, since it stopped him from him [[StartOfDarkness from going down a path]] he knows he wouldn't have come back from.
** When Walter is temporarily reconnected to the [[spoiler: missing parts of his brain]], we see him immediately become cold, detached, assertive and show nothing but ''utter contempt'' to anyone who gets in his way.
** It seems like after [[spoiler: Windmark mind whammyed Walter]] that he was back to his old self, but in "Through The Looking Glass and What Walter Found There" Walter realizes that integrating the missing parts of his brain is changing him back into his more ruthless self. And he's deathly afraid of what he might do.
* AnachronismStew: In "Brown Betty", Walter tells Olivia's niece a story in the style of Film Noir - with clothes, hairstyles and interior based on the 1940s - oh, and computers, mobile phones and quantum lasers. In his defence, Walter was hopped up on drugs at the time. Not to mention the fact that he's completely crazy anyway. It was just a fairy tale story for Olivia's niece, so it's probably a good thing to [[MST3KMantra really just relax]].
* AnachronicOrder: September's appearances don't occur in the order that he experiences them.
* AnalogyBackfire: "Nothing grows on scorched Earth." Clearly Captain Windmark has never been to Australia.
* AndIMustScream: Happens a lot.
** Peter's flyover of the Alternate New York includes the tidbit that people in the Madison Square Garden quarantine zone have just recently been declared legally dead. [[spoiler: Quarantine encases a large area in an amber-like substance.]]
** In "Amber 31422", [[spoiler: Walternate mentions the likely theory that those trapped in Amber are in suspended animation. It's later revealed that this is correct - and they are stuck thinking the last thought in their heads when the amber engulfed them.]]
** They guy from 1x02 uses a muscle paralyser to prevent his victims from moving ''while he removes their pituitary glands.''
** Olivia in ''"Entrada"''. [[spoiler: They were going to remove her organs.]] While she was awake and completely conscious. They even drew guidelines so she knew ''exactly'' what they were going to do.
** Milo Stanfield in "The Plateau" becomes [[spoiler: so intelligent his thoughts can no longer be interpreted by other human beings, and he will only be able to communicate with a machine for the rest of his life.]]
** [[spoiler: Simon Foster's fate. He's got a mouth but screaming is rather difficult without lungs or a body.]]
* AndThereWasMuchRejoicing: [[spoiler: Sanford Harris's death.]]
* AnimalWrongsGroup: In "Unleashed", these guys let the monster-of-the-week out. [[Film/TheLastCrusade They chose poorly]].
* AntiHero: The more we find out about Walter Bishop's past, the more it seems like putting him in the asylum was the right choice.
* AntiVillain:
** Doctor Nayak. An addict with a Jekyll and Hyde split personality, he wasn't even fully conscious of what he was doing, and his almost constant look of horror as he becomes aware of what his darker half has been doing is truly heartbreaking.
** Alistair Peck, a man who was willing to go to any lengths to perfect time travel to save his fiance from her tragic death.
** Alan Ruck plays a scientist who stumbles across a possible cure for his paraplegic son, and becomes so desperate to perfect it that he kills several other crippled people that he used for test subjects.
** Dana Gray. A woman who watched her family murdered before her eyes and normally would've been killed herself but because of bizarre events ended up in a [[WhoWantsToLiveForever state where she could not die and was merely seeking a way to end that.]]
** Eugene from ''Wallflower.''
** Ultimately, [[spoiler: Walternate]]
*** [[spoiler: Well, technically a different Walternate, he didn't get memories restored.]]
* ApocalypseHow: Class X. [[spoiler: Entire Alternate Earth got destroyed, if not entire Alternate Universe. And Primary is also doomed. Luckily, time travel fixed it.]]
* AppliedPhlebotinum: What do people who've taken Coretexiphan do? What ''don't'' they do? Cortexiphan has been described as making those taking it better able to tap into their inner powers, which, being that every human is unique, is different for every person.
* ArbitrarySkepticism: Peter frequently lampshades whatever weirdness is going on in the current episode, though by halfway through the first series, he's stopped being actively skeptical and now simply points the weirdness out.
** In "Unearthed", Walter gets into a heated argument with a ''priest'' over whether "possessions" are a real (but misinterpreted) phenomenon or nothing more than superstition. The man of science and the man of faith are on precisely the opposite sides you'd expect, though Walter points out that the Bible itself contains ''numerous'' instances of such phenomenon occuring.
* [[ArcNumber Arc Numbers]]: Like [[Series/{{Alias}} other]] [[Series/{{Lost}} shows]] by Creator/JJAbrams, there are numbers that often reoccur:
** Examples of the number 47 appearing are:
*** In "Pilot" (1x1), there are 147 passengers on Flight 627.
*** In "In Which We Meet Mr. Jones" (1x7), Loeb mentions something on page 47 of the document he’s looking at.
*** In "Safe" (1x10), the flight with the veterans on it is said to have landed 47 minutes ago.
*** In "The Transformation" (1x13), there are 147 passengers on Flight 718.
*** In "Ability" (1x14), the bomb is located on the 47th floor of the building. The bomb also consists of 47 lights.
*** In "Inner Child" (1x15), the clue the child writes for Olivia is “547 Marlborough.”
*** In "Fracture" (2x3), Walter says that he “stopped counting at 47 needle-marks” when asked how many were present on a corpse.
*** In "Momentum Deferred" (2x4), it is revealed that the shapeshifters’ blood is 47% mercury.
*** In "Johari Window" (2x12), 47 people were born in Edina between 1990 and 2000.
*** In "Jacksonville" (2x15), Broyles says that the list of buildings that might disappear has been narrowed down to 147.
*** In "Brown Betty" (2x20), Peter says that there are 147 pins in the map in his kitchen. Another one is that Nina Sharp's private parking space is No. 47.
*** In "Over There, Part 2" (2x23), the AlternateUniverse Fringe team locates Olivia when her “Show Me” passes an auto-checkpoint in Sector 47.
*** In "6:02 EST" (3x20), the electromagnetic spike occurs at 5:47 A.M.
*** In "The Day We Died" (3x22), the BadFuture takes place when Peter is 47 years old.
*** In "Novation" (4x5), the shapeshifter gets the typewriter that communicates with the Other Side out of a storage locker marked 47.
*** In "And Those We've Left Behind" (4x6), the time chamber Raymond Green created can't last for more than 47 minutes each time.
*** In "Enemy of My Enemy" (4x9), [[spoiler: Mr. Jones]] says that he has made 47 shapeshifters so far.
*** In "Making Angels" (4x11), the suspect of the week carries TSA badge 0047.
** The number seven itself appears to have some great importance:
*** Walter was institutionalized for seventeen years.
*** Peter [[spoiler: died when he was seven years old]].
*** Peter has been arrested seven times.
*** Peter and Olivia [[spoiler: first met when Peter was seven years old.]]
*** There were thirty-seven children in the Cortexiphan trials.
* ArcWords:
** "The Pattern"
** "The First People"
* ArtisticLicenseMilitary: A truly inexplicable one: S1E4 "The Arrival" has Colonel Jacobson, who investigated a similar incident at [[SemperFi Quantico]] in 1987. In his house, you see a picture of him in his younger days wearing a junior enlisted Navy uniform instead of a Marine officer's uniform. He shows a picture from the incident: a master sergeant who was guarding the base at the time. The master sergeant is wearing the uniform that the Army (NOT the Marine Corps) adopted in 2005, even though the uniform that the entire military used in 1987 is readily available in props departments.
* AscendedMeme: Even the captions refer to alternate Olivia as her FanNickname "Bolivia".
* AsceticAesthetic: [[MegaCorp Massive Dynamic]] is in [[http://artect.net/wp-content/uploads/2008/09/fringe_massivedynamic01.jpg love]] [[http://artect.net/wp-content/uploads/2008/09/fringe_massivedynamic02.jpg with]] [[http://artect.net/wp-content/uploads/2008/09/fringe_massivedynamic03.jpg this style]].
* AssholeVictim: The two kids who [[spoiler: get killed by Gus]] at the beginning of "Alone In the World" are bullies who were planning on beating up the {{Woobie}}. A somewhat disturbing example since little to no sympathy is extended to them by any of the cast members, despite the fact that they're still just 12 year olds.
* TheAtoner: [[spoiler:Walter becomes this by the end of the series. Essentially, everything that happens is a direct or indirect result of his breaching the gap between the two universes. In the series finale, he sacrifices himself to take Michael into 2167 to ensure the Observers never exist - at least, not as the cold, calculating robot-like people they've been known as - effectively fixing the universe, at least to some extent.]]
* AutopsySnackTime: Walter often eats while examining corpses or other {{Squick}}-inducing things.
* AwesomeByAnalysis: Used by the VillainOfTheWeek in "The Plateau" to cause DisasterDominoes to kill people.
* BackForTheDead: [[spoiler:Several of the Cortexiphan patients from season one. None of them last long in the alternate universe.]]
* BackForTheFinale: [[spoiler:Fauxlivia, Lincoln, and December.]]
* BackupTwin: A sort of in-universe example [[spoiler: when Walter takes Peter from the alternate universe after ''his'' Peter dies.]]
* BadassBookworm: Peter Bishop.
* BadassBystander: The one security guard who takes on a [[MadeOfIron shapeshifter]] in ''Momentum Deferred'', ''after'' [[{{Determinator}} getting shot in the gut]].
* BadassFamily: The Bishops, as well as Astrid, Nina and Broyles.
* BadassGrandpa:
** Unseen, but Peter's grandfather was a spy for the Allies during WWII.
** Also William Bell, as about a dozen Alternate Fringe Division agents found out to their misfortune.
** Walter, [[spoiler:both the Secretary of Defense and Doctor Bishop.]]
* BadassLongcoat: Peter, again. Not to forget Olivia. Captain Windmark is a villainous example.
* BadFuture: More than one.
** [[spoiler: "The Day we Died"]]
** [[spoiler: "Letters of Transit"]]
** [[spoiler:All of season 5.]]
* BaldBlackLeaderGuy: Philip Broyles.
* BeCarefulWhatYouWishFor: [[spoiler: Elizabeth Bishop was overjoyed upon seeing Peter alive again and seemed more unwilling to give up her "son" than Walter was, leading him to eventually decide to give up trying to return Peter back to the Alternate Universe. Unfortunately, because Elizabeth was left as the one responsible for maintaining TheMasquerade around Peter, she [[INeedAFreakingDrink turned to alcohol]] to cope with the stress, leading her to be DrivenToSuicide]].
* BedTrick:
** [[spoiler: Fauxlivia does this to Peter.]] Well, sort of.
** The VillainOfTheWeek in "A Short Story About Love" attempts this.
* BecomingTheMask: "Do Shapeshifters Dream Of Electric Sheep" reveals that this can happen to shapeshifters.
** [[spoiler: Happened to Peter, who eventually forgot about his childhood in the alternate universe.]]
* BeleagueredAssistant: Poor Astrid, at least at first.
-->'''Astrid''': I went to Quantico for ''this''?
* BerserkButton:
** Walter gets ''very'' angry when Peter's life is put in jeopardy [[spoiler: as a direct result of already losing him once.]]
** Holding a knife to Peter Bishop in an attempt to [[spoiler: activate Olivia's Cortexiphan enhanced abilities]] works ''[[GoneHorriblyRight spectacularly]]''. [[spoiler: Just be careful that she doesn't fry you like crispy bacon in the process.]]
* BestOfAllPossibleWorlds: Played with after [[spoiler: Peter is erased from history]]. While many things have changed, the bad things and the good things changed are sprinkled evenly across both universes, and no ResetButton seems forthcoming.
* BigBlackout: As a result of [[spoiler:Olivia using her cortexiphan powers to throw a car at Windmark.]]
* BigNo: [[spoiler: Peter does this when Walter shoots Olivia in "Brave New World".]]
* BittersweetEnding:
** In "Welcome to Westfield" (4x12). [[spoiler: While Olivia, Peter, Walter, and the remaining survivors are able to get out safely, there is absolutely nothing left of the town (not even any other potential survivors)]].
** "A Short Story About Love." [[spoiler: Olivia remembers Peter, Peter realises that he was home all along and the episode ends in an OrbitalKiss. But Olivia will no longer remember her mother-daughter relationship with Nina Sharp.]]
** "Letters of Transit." [[spoiler: The Observers have taken over the world, Walter TookALevelInJerkass, Nina is in a wheelchair, Broyles looks like he's aged a hundred years,the team have been in amber for 20 years, William Bell might need to borrow Nina's arm if he ever gets out of the amber because Walter chopped his off, Simon sacrificed himself to save Peter, Etta grew up without her parents, it looks like Olivia is dead... but Etta is reunited with her family, Olivia and the Bishops apparently bested Jones and they have a plan to stop the Observers.]] It's not much, but it's something.
** "Worlds Apart." [[spoiler: To stop Jones from ripping apart two universes, they need to close the bridge. Closing the bridge will stop the other world from healing. But there's peace between their worlds now. And Lincoln is staying in the other universe with Fauxlivia.]]
** "Brave New World", verging on DownerEnding. [[spoiler: They've stopped Bell, saved Olivia and there is now another Baby Bishop on the way. Oh... and the Observers are going to take over the world.]]
** The series finale, "An Enemy of Fate." [[spoiler:Time is reset, so the Observer invasion and dictatorship never happens. But September/Donald dies in the fight to make sure it happens, and in his place Walter takes young Michael to 2167 - whence he will never come back, or else he would trigger a time paradox.]]
* BizarroEpisode: Season 2 episode 20, "Brown Betty". Season 3 episode 19, "Lysergic Acid Diethylamide". No, it's not a coincidence that both are named after (and involve use of) mind-altering drugs.
* BlackBraAndPanties: Agent Olivia Dunham, God bless 'er.
** And Fauxlivia wears white underwear. I'm pretty sure the show has been [[ColorCodedForYourConvenience consistent with this.]]
* TheBlank:
** Turns lethal when a string of victims' facial features start rapidly growing over, causing death by suffocation. Even a tracheotomy can't save them, as the growing tissue quickly seals any such air holes as fast as they are made.
** A relatively tamer version appears in a hallucination in "Dream Logic" (2x05).
* BlessedWithSuck / CursedWithAwesome:
** Joseph Meagar in episode 5 is able to generate powerful electric fields - but not to control them, which leads to him accidentally killing his boss and shorting out his mother's pacemaker.
** Another character is able to predict deaths - leaving his head full of almost ceaseless nightmarish visions.
*** A girl named Emily has the same ability. [[spoiler: Only her ability eventually kills her. She sees her own death in her visions.]]
** The Cortexiphan subjects. ''All of them.''
*** Nick Lane is a reverse empath. His feelings are projected to those around him. He has absolutely no control over this ability, and since he's suicidally depressed and extremely alienated from society, the results aren't pretty. [[spoiler: The first time he tried to kill himself, his sister did it first.]]
*** James Heath. He leaves half a dozen Cortexiphan subjects as corpses in his wake, inflicting upon them his terminal cancer in exchange for their perfect health. However the effect is temporary and the symptoms quickly come back with a vengeance.
*** The guy from "Concentrate and Ask Again" who cannot stop himself from reading other peoples minds and gets terrible headaches when he does. He's basically a hermit.
*** The guy who got nervous on a date and ended creating a magnetic field that ''ripped the filling out of his date's teeth.''
* BlueAndOrangeMorality: The Observers. The best understanding of their motives is that they strive towards "balance," but aside from that they are fairly inscrutable. The episode "The Firefly" shows their interesting morals: [[spoiler: one of them stops a robbery in order to save a shopgirl who's having an asthma attack, whose inhaler he then steals. He then steals a car in order to crash it into a police car holding the shopgirl, triggering another asthmatic attack and forcing Walter to choose between letting Peter go in order to save the shopgirl, when he has been led to believe that Peter going after the Observer will either kill him or cause him to be abducted back to the other universe. He lets Peter chase after the Observer, but all the Observer does is use a sort of air gun to knock Peter over. Later, Peter takes aspirin with some milk, not realizing that Walter had mixed in a brain mapping serum into it, which in combination with the aspirin nearly poisons him, only saved because he was young and healthy and Walter was able to direct Olivia to administering a shot that saves Peter.]] And Walter thinks all of this was to [[spoiler: save his life by showing him the flaw in the brain mapping serum]]. However, the real reason for the Observer's actions: [[spoiler: to test whether Walter would be willing to sacrifice his son if need be, which it turns out he is.]]
* BodyHorror:
** You know how guys cross their legs in sympathy after watching [[GroinAttack someone take it to the nads]]? ''That's what [[spoiler:the pregnancy scene]] is like for women.''
** "Ability" (1x14) revolves around [[AndIMustScream a chemical that seals your orifices shut]].
** In fact, the entire show thrives on BodyHorror. Virtually all the [[BodyOfTheWeek Bodies Of The Week]] have to do with being killed, incapacitated, etc. in weird and {{squick}}y ways.
** The pilot leaves no doubts about it, when he see a man's jaw melt off, followed by an agent being infected with a disease that renders his skin transparent.
** Alistair Peck...ewww.
** "Jacksonville", anyone? Even Astrid couldn't take it.
** "Marionette" had double doses -- the first from the people having their organs removed, the second from the puppet body.
* BodySnatcher: [[spoiler: William Bell co-opting our Olivia's body]] ought to count even if it's instigated by him, not sure which of the subtropes [[DemonicPossession fit]] [[PeoplePuppets best]] [[FreakyFridayFlip though]]. We'll just have to wait and see...
* BollywoodNerd: Dr Nayak.
* BoundAndGagged: 02x08 "August" features a character, Christine Hollis, kidnapped by an Observer who binds and gags her at a motel for most of the episode.
* BreadEggsMilkSquick: In "Brown Betty" 2x20 Story-world Walter is responsible for inventing: Hugs, Bubble Gum, Rainbows, Flannel Pajamas and... ''Singing Corpses''
* BreakTheCutie:
** Episode five's Joseph Meagar. He starts off the typical, moderately repressed guy living with his nagging mother, working in a job he dislikes and has a [[StalkerWithACrush mostly harmless little crush]] on a girl who won't give him the time of day. Cue the electrical superpowers and his new WalkingTechbane status. He inadvertently kills half a dozen people (the girl he likes included) with an elevator, gets fired for being late (you know, right after the elevator incident), possibly kills his boss by getting a machine to malfunction and mutilate his arm, then comes home to tell his abrasive mother what happened... only to short circuit her pacemaker. ''All on accident''. And that's ''before'' the bad guys kidnap him.
** The entirety of the series seems to be devoted to breaking Olivia Dunham. She gets through a godawful childhood (involving [[spoiler: illegal drug trials,]] a monstrous stepfather, and what sounds like a PromotionToParent). She manages to find a job that she enjoys and falls in love with her partner. Partner is injured. She goes to incredible lengths to save said partner. She finds out that [[spoiler: he's a traitor and he dies in her arms.]] ''In the first episode.'' Turns out [[spoiler: that John Scott isn't a traitor but death is awfully permanent these days]] so no happy ending. She falls in love with [[spoiler: Peter. He leaves. She goes to ''another universe'' to save him. She gets left behind. After enduring torture, MindRape and the prospect of a gruesome death, she barely manages to get back home.]] She spends the beginning of "Marionette" with the most ''adorable'' smile on her face. When she sees Peter, she does the whole shy teenager glance thing and just seems so ''happy'' to back. And then she finds about [[spoiler: Peter and Fauxlivia.]] The smile is gone. She's been [[spoiler: StrappedToAnOperatingTable]] how many times? Plus she [[spoiler: went through a car windshield and was temporarily declared brain-dead.]] And then there are the [[spoiler: seizures she's had while in the lab.]] Oh... and her friend ended up [[spoiler: being killed and replaced by a shape shifter who eventually tried to kill her.]] It's like watching someone dangle a bone in front of a puppy and then kick it for good measure.
* BreakTheHaughty:
** Over time, you realize this is what St. Claire's did to Walter. [[spoiler: Then you learn that he ''asked'' for it, at least partly, because he was afraid of what he was becoming.]] Given what Walternate is like, this can only be a good thing.
** Peter in the first episode... a bit of a {{Jerkass}}. Peter in Season 4... dear God, someone give the man a hug.
** Fauxlivia. Smug, bitchy alternate in first appearance. In "The Consultant"? [[spoiler: She gets drunk on ex-boyfriend's alcohol because her partner died.]]
* BreatherEpisode: ''Brown Betty''.
* BrickJoke: In "The Same Old Story", Walter is delighted by his car-seat warmer. In "The No-Brainer", several episodes later, whilst investigating a suspicious death at a car dealership.
--> '''Walter''': I wonder if they sell cars here with the seats that warm your ass?
* BriefAccentImitation: Pretty much the entire cast in "Brown Betty" puts on a noir-ish New York accent to keep with the theme of the episode. [[OohMeAccentsSlipping Most of them are hilarious.]]
* BrilliantButLazy: Peter. Occasionally he demonstrates that he's just as intelligent as Walter, if he wants to be.
--> '''Astrid''': You know you sound like ''Walter?''
* BroughtDownToNormal: [[spoiler:Olivia at the end of season 4.]]
* BrownNote:
** In Season 3's "The Box", a sound coming from a box [[{{phlebotinum}} somehow]] turns people catatonic, and even blows up their heads if they had something like dental ceramic crowns on teeth. Temporary or permanent deafness makes a person immune to the effect. The SuspensionOfDisbelief called for here may call for an unusual level of willingness.
** "6995 kHz" in turn has an amnesia-inducing signal piggybacked onto a numbers station's broadcast.
** In "Concentrate and Ask Again", Simon Phillip's already suffers severe headaches from hearing a regular person's thoughts. Walter's thought pattern is so erratic and disjointed, it's even ''worse!''
* BulletCatch:
** [[spoiler: The Observers]] can do this pretty much whenever the hell they want to.
** [[spoiler: Olivia in the fourth season finale.]]
* BystanderSyndrome: Peter is prone to having this mindset from time to time. He gets over it.
* CaliforniaDoubling:
** New York variant, while some of the [[BRoll establishing shots]] are filmed in Boston, the rest of it is filmed around New York City. Note how all the license plates that don't belong to characters are New York ones not Massachusetts.
** Soon to become Boston Doubling, as production has moved to Vancouver for Season 2.
* CallBack:
** In the first episode, Walter laments the quality of the butterscotch pudding at the institution. When he returns to speak with a friend there, the friend is eating said pudding.
** ''"In Absentia"'' has a very dark CallBack to the first episode. Etta calls Gale "sweetheart".
** Season 5 is full of re-uses of many of the old Fringe experiments the team had to confront in Season 1. In the finale, "An Enemy of Fate," Peter and Olivia attack an Observer facility with the face-sealing gas, the brain liquefier, death by nonexistent blade-winged butterflies, and more.
** In "White Tulip", Walter struggles to write a letter to Peter, explaining why Walter abducted him from his timeline. The episode vividly uses the image of a white tulip as a sign of God's forgiveness. The image comes up a few more times in the series, most notably in its finale: [[spoiler: after Walter takes Michael on a one-way trip to 2167 to halt the creation of the Observers (resetting both Universes in the process), Peter receives a letter, from his father, that features only a drawing of a white tulip.]]
* CallingYourBathroomBreaks:
** Walter every now and then.
** [[MoodWhiplash Hilariously]], Olivia does this after [[spoiler:snogging Peter.]]
* CameBackWrong: In "Marionette" the VillainOfTheWeek cryptically says [[spoiler: "I looked into her eyes, and it ''wasn't her''. This is presumably because the girl that he revived appeared to be completely brain-dead.]]
* CarFu: In the finale, [[spoiler:a Cortexiphan fueled Olivia throws a car at Windmark's head.]] It's super effective.
* ChameleonCamouflage: Eugene Bryant in the episode "Wallflower" has this ability, since he's been genetically modified to shift his pigment around like an octopus.
* CharacterDevelopment:
** At the start of the series, Peter is a nomadic, selfish, sarcastic ConMan and something of a {{Jerkass}}. After [[spoiler: falling for Olivia,]] making peace with Walter and hefty amounts of [[BreakTheHaughty everything going to hell]], he's willing to risk his own life to save the people he loves and the two universes.
** Walter was a brilliant but arrogant scientist with no regard for ethics whatsoever. [[spoiler: He broke a universe trying to save one person and even slipped into OmnicidalManiac territory for a while]]. By season four, he flatly refuses to [[PlayingGod play God]] again and he's willing to ''[[spoiler: shoot Olivia in the head]]'' if it means saving the lives of billions of people.
* ChekhovsGun: It's very common to see an item mentioned/shown in passing in one episode only for it to be used as a central plot device just a few episodes later.
** "Over There part 1" demonstrates how vortexes are closed on the B-Side: a gas that generates into a rock-solid amber-like substance - the very same substance which appeared in the series' third episode ("The Ghost Network").
** "Over There Part 2" has a near-textbook example. In the beginning of the episode, [[spoiler:William Bell stalls some agents with small talk about his plans to improve the next model of their handguns. At the end of the episode, he [[StuffBlowingUp demonstrates the new model]]]].
** Subverted with the tracking device Walter implants in himself at the end of "Snakehead". Frequently referred to. Never used. Instead, first time Walter is kidnapped, they find that the kidnappers removed the chip first.
** The bell that William Bell leaves Nina [[spoiler: in his will]] turns out to be the activator for [[spoiler: the "soul magnet" he planted in Olivia, allowing his life force to possess her]].
** Walter's [[spoiler: regenerating lemon cake]] in the Season Four finale.
** All of Season One serves as this for the Alternate History/Universe of Season Four.
* ChekhovsGunman:
** Sam Weiss is introduced in early Season 2 as a sort of TricksterMentor for Olivia (at least, as far as physical recovery goes). In Season 3, we discover that [[spoiler: he's from a long line of people with knowledge of the First People and the Doomsday Machine.]]
** [[spoiler:The empath kid from "Inner Child"]] in Season 1, is an important part of the plan in Season 5.
* ChekhovMIA: William Bell.
* ChekhovsSkill: [[spoiler: Olivia's eidetic memory for numbers.]]
* ChemistryCanDoAnything
* TheChessmaster: Milo Stanfield in "The Plateau," UpToEleven. He can perfectly calculate his
* CIAEvilFBIGood: Toyed with. The CIA are shown to be ruthless and have a "for the good of the many" attitude, but they're never actively antagonistic.
* CloudCuckooLander: Walter Bishop. Those 17 years at the asylum have ''not'' been good for his sanity. Especially as he is a dyed-in-the-wool MadScientist with a tendency to ''actually say'' TheyCalledMeMad. Shrinks ''really'' take stuff like that personally.
** In one episode, Walter's thought process is shown to be so baffling that it causes a mind reader to pass out. It's later revealed that [[spoiler: much of Walter's crazy was caused by William Bell '''excising giant chunks of his brain''' to keep Walter from ever knowing certain things.]]
* TheCuckoolanderWasRight: More often than not, Walter is right.
* CocaPepsiInc: The alternate universe has Shexxon, presumably the result of a merger between Shell and Exxon.
* ColourCodedForYourConvenience: The opening credits often change colors from the traditional blue to red, grey, and/or amber, depending on the episode - see SpecialEditionTitle below.
** Olivia wears black underwear and Fauxlivia wears white underwear (oddly subverting both LightIsGood and DarkIsEvil).
** Although this is less clearly a subversion as you get to know Fauxlivia. [[spoiler: Fauxlivia generally seems to be happier and more open at least up until she goes rogue at the end of season 3. By contrst, regular Olivia has some real darkness in her past and after she got screwed over by her dead boyfriend isn't what you'd call open. Our Olivia is a damaged, beaten down person working for the good guys. Fauxlivia is a good person working for the bad guys.]]
** Olivia often wears clothes with a monochromatic colour scheme. [[spoiler: It's later revealed that Recruits are typically drawn to these colours, as a side effect of their time being treated with Cortexiphan as children, leaving them with a subconscious desire [[BeneathNotice to blend in]].]]
* CombatPragmatist:
** Olivia.
** Peter.
* ConMan: Peter.
* ConspiracyTheorist: Lovingly subverted with Olivia in "Olivia." Dressed in a hospital gown, she jumps into a cab and rants and raves to the driver about secret government conspiracies, doubles, kidnappings, and 'experiments'. We of course know it's all true - but think about it from Henry's perspective:
--->'''Olivia''': Don't placate me because you think that I'm-
--->'''Henry''': What? Crazy? And what would you think if I jacked your cab in a hospital gown with a gun, screaming a conspiracy, telling you I'm being chased by the government and folks are trying to make me believe I'm a tattooed version of myself?
* ContaminationSituation: "What Lies Below".
** ''{{Fringe}}'' did theirs in season two. Peter contracts a pathogen at a crime scene.
** In an episode in season one, Charlie becomes an incubator for a supernatural creature.
* ContemplativeBoss: Walternate in his office.
* ContinuityNod: Tons and tons. The show keeps excellent track of its internal continuity.
** Walter mentions in a few episodes that one of his favorite bands is the nonexistent "Violet Sedan Chair." In the episode "Firefly," we meet Walter's musical idol - the keyboardist from Violet Sedan Chair.
** In the first season, it's mentioned that kids treated with Cortexiphan tended to try and blend in, and wore monochrome colors. In the fourth season, Olivia tracks down a Cortexiphan test subject, and we get a shot of his wardrobe, filled with black, white, and grey outfits.
** In the season 2 finale, we see Fringe agent Lincoln Lee checking for dimensional instability with a combination spray and handlight. In the fourth season, Astrid uses the same device for the same purpose, with Walter in the background bitching about how [[spoiler:the other-universe agents who gave it to them did a poor job of writing the manual.]]
* CoolBigSis: Olivia, to Rachel. Though it's Rachel who's the one to fuss over and worry about her sister (for increasingly good reason).
* CoolGun: Several. The "Rogue" chasing the Beacon in "The Arrival" has a powerful energy weapon of unknown origin; the "Redverse" Fringe Team use a "Model 76 Pulse Gun" designed by William Bell, who also gets to show off the [[HandCannon Model 77]]. In the Amber Timeline, Jones' faction invents a gun designed to kill Observers (who can teleport at will through space and time, predict multiple timelines, move really, really fast and literally '''catch bullets''') by speeding up the bullet faster than they can move. In the future of that timeline, these same guns are used by the Resistance. So, to summarize, a gun designed to kill people who can '''catch bullets.'''
* CosmicRetcon: The Season 4 premiere shows that much of the show's history has changed as a result of Peter's [[RetGone retroactive disappearance]]. Walter has refused to leave the lab since Olivia sprung him from St Claire's, and Lincoln Lee doesn't remember meeting the team in "Passenger". It was also implied that the John Scott arc of season 1 didn't happen, and that the nature of Walter and Walternate's conflict is very different.
* CouldHaveAvoidedThisPlot: The villains in [[Recap/FringeS01E02TheSameOldStory "The Same Old Story"]] and [[Recap/FringeS03E07TheAbducted "The Abducted"]]. It's called hormone replacement therapy, guys. There's no need to kill the hookers and torture the small children.
* CrapsackWorld: The alternate universe is a strange case: It is much more advanced technologically and medically (they had modern cell phones in the mid-80s). The society itself is also implied to be ''slightly'' better-off, or at least less destitute financially. On the flip side, Fringe events have destroyed numerous cities. New York itself is covered with blotches of quarantine zones. In some parts the air is actually dangerous to breathe. There are numerous epidemics in progress, some of which involve diseases that exist in our universe but hit theirs much harder and others that don't even ''exist'' in ours. Real coffee is hard to find. Wallabies and sheep are extinct alongside numerous other species. The government is implied to be more authoritarian even without the involvement of [[spoiler: Walternate]]. [[ArsonMurderAndJaywalking There are no rainbows,]] and there's no such thing as Franchise/{{Batman}} or Franchise/SherlockHolmes.
** Becomes a WorldHalfFull when the bridge begins to heal the damage done and lost areas start getting reclaimed.
** [[spoiler: The future as of "Letters of Transit". Not only are the Observers preventing things like free will, private thought, education, travel and more or less destroying any form of human culture, they are pumping carbon monoxide ''into the atmosphere''. Forget things like coffee and eggs... people are going to start dying at forty.]]
* CreepyChild: The child in "Inner Child."
* CriticalResearchFailure: [[spoiler: Walter describes a clearly single celled organism as a Virus. He even answers in the affirmative when asked if it is a single cell. Viruses are less than a cell, being simply genetic material in a protein sheath. As such it would not be able to move under its own power.]]
* CrazyConsumption
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%% The 'Crowning' stuff goes on the 'Crowning' pages, not here.
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* CurseCutShort
-->'''[[VoiceWithAnInternetConnection Walter]]''': Well, tell her what I said. Ask her why she destroyed files. Go on, ask her!
-->'''Nina''': Maybe you can ask Walter if he remembers what group the boy was in. I mean, that may help.
-->'''Astrid''': Of course. Walter, did you hear that?
-->'''Walter''': Yes. Her voice goes right into my inner ear and rattled around like razor blades. Of course I heard it. Tell her to go-
-->'''Astrid''': [[TactfulTranslation He said that he is not sure, but thank you for the suggestion.]]
-->'''Walter''': I did not say that!
* {{Cyberpunk}}: The series itself is not an example (barring the idea of technology run amok). However, Charlie Francis' monologue near the end of the first episode touches a lot of the themes of {{Cyberpunk}}.
** Most of what happens in our universe is more correctly Biopunk than Cyberpunk, although they are closely related. Its more to do with doing weird crap to people and DNA and what not, rather than the more computer/machine focused themes of Cyberpunk.
** The alternative universe is genuinely very cyberpunk. [[spoiler: From the human/machine hybrids, to the repressive government, the world ripping itself apart, the plauge killing all the plants and the utterly crazy technologies, it pretty much does tick all the boxes. Look at the drawing of the machine to cross universes powered by Peter... Its right out of Deus Ex for gods sake.]]
** The setting and mood of [[spoiler: ''Letters of Transit'']] is ''very'' Cyberpunk, even if it doesn't follow the usual Cyberpunk tropes.
** The setting of the entire 5th Season, so far, is pretty solidly cyberpunk, as have been the show's other forays into [[spoiler: the future]], such as the Season 3 Finale.
* CyberpunkIsTechno: Not techno per-se but the music in the [[spoiler: Observer Nightclub in ''Letters of Transit'', which is brimming with Cyberpunk elements,]] has an {{Industrial}} and [[ElectronicMusic Electronic Body Music]] vibe to it.
* DamselInDistress:
** In most episodes, [[DistressedDude Peter]] is either filling this or doing something {{Badass}}. [[GuileHero Sometimes both.]]
** Olivia needs rescuing a few times but it never diminishes her {{Badass}}, ActionGirl status. In 2x01 she (understandably) spent the entire episode completely freaked out in a hospital bed and was almost strangled by a shapeshifter. When asked if she was okay she let's everyone know that she's back by responding with [[ThisIsForEmphasisBitch "Go get that bitch"]]. She needs rescuing again in ''"Entrada"'' when she's StrappedToAnOperatingTable and in "Lysergic Acid Diethylamide" when she's [[spoiler: trapped in her own mind.]]
* DamselOutOfDistress: Olivia Dunham. There are a few exceptions where someone else has to help rescue her, but in any case, anyone who kidnaps her is in for a lot more than they bargained for, and she usually escapes using nothing more than her wits and whatever tools and weapons she finds lying around. Specific examples
** "The End of All Things". [[spoiler: Olivia is kidnapped by David Robert Jones, who's trying to activate her Cortexiphan superpowers as part of his EvilPlan. Meanwhile, Peter and rest of TheTeam try to find a way to get her back. She ends up manipulating Jones into kidnapping Peter so he can serve as the emotional "battery" for the activation, but instead of merely turning on some light bulbs as he wants she electrocutes one of his henchmen and frees them both.]]
** Olivia finds herself trapped in her apartment with a killer and phones Peter for help...[[spoiler:then proceeds to beat the killer near senseless with a heavy object, before yelling at him "You stay DOWN!", Wisely, the killer takes the advice and it's all over bar the shouting by the time Peter leads TheCavalry to the rescue]]
* DangerouslyGenreSavvy:
** [[spoiler:Alternate-universe Charlie Francis.]]
** [[spoiler:Peter. In "Entrada" in particular, he notices that the alternate Olivia and an unknown man enter a bathroom, but Olivia exits with a female hostage. Peter realizes the hostage is a shapeshifter and shoots.]]
** David Robert Jones but [[spoiler: William Bell is more so.]]
** Captain Windmark.
* DarkAndTroubledPast:
** Walter crossed several ethical boundaries in the name of Science before he was admitted St. Claire's Psychiatric Institution, including experimenting on children. Also, [[spoiler:stealing a parallel universe version of his own son.]]
** When Olivia was just a toddler [[spoiler:William Bell and Walter performed psychologically scarring experiments on her during their trial of Cortexiphan]], and when she was 9, her stepfather would regularly beat her mother. [[spoiler:After one such occurrence, Olivia shot her stepfather twice and almost killed him. Ever since, he has sent her a birthday card just so that she knows he's still out there, and she regrets not killing him.]] Then, when she was still a teenager, her mother died. Then we come to the show...
** Peter himself.
* DarkerAndEdgier: The fifth and final season gives us [[spoiler: a ''really'' BadFuture overrun by vicious Observers]], JackBauerInterrogationTechnique and [[AndIMustScream sinister biological weapons]] used by the [[BlackAndGreyMorality heroes]], [[spoiler: the brutal, unceremonious death of Etta Bishop]], Walter being terrified of turning back into the man he used to be ([[AmnesiacDissonance with hints of him showing through]]), [[spoiler:Observer!Peter]] slowly losing his humanity, and Nina Sharp [[spoiler:shooting herself in the head]].
* DarkestHour: As of ''"The Day We Died"'', [[spoiler: Well...in 2026, at least.]]
* DarkReprise: "Henrietta", in ''"The Bullet That Saved The World"'' [[spoiler:when Windmark shoots Etta]]and in ''"An Origin Story"'' while [[spoiler:the Observer that Peter killed drips blood on the floor.]]
* DataCrystal
* DaydreamSurprise:
** ''"The Same Old Story"'' gives us a pretty freaky daydream of Olivia's involving an AmbiguouslyEvil Broyles and horrific pregnancy.
** Given Olivia's tendency to slip in and out of realities, this tends to happen to her a lot.
* ADayInTheLimelight: "Northwest Passage" (2x21) focuses mainly on Peter trying to solve a Fringe case on his own in Washington State. And "Everything in Its Right Place" (4x17) revolves around our universe's Lincoln Lee assisting the other side's Fringe team.
* DeadAllAlong: [[spoiler:Peter Bishop. See ReplacementGoldfish.]]
* DeadAlternateCounterpart: Inverted and arguably its most important plot point: it is in fact the "main" universe's Peter who dies as a kid. This sets the plot in motion as his father, Walter, goes on a journey to the alternate universe to steal back his sick yet not dead son from his alternate self and cure him like he should have done.
* DeadlyNosebleed: Congratulations, you're on an episode of Fringe! (Which does ''nothing'' for your life expectancy in the first place.) You get a nose bleed. Option 1, you're a walking radioactive bomb about to explode the heads of everyone (including yourself) in the immediate vicinity. Option 2, you're a about to turn into a giant were-porcupine and brutally rip apart everyone in the immediate vicinity. Option 3, you're infected with a thousand year old disease that wiped out the Mammoths. It will first drive you insane and then kill you. Worst case scenario, you're the harbinger of the Apocalypse. Don't get a nose bleed on Fringe.
* DeadpanSnarker: Peter.
--->'''Peter''': Yeah, 'cause bootlegging smack in the basement is the picture of normalcy.
* DeathInTheClouds: The pilot episode has an airplane land with everyone on board dead from a biological weapon. They then have to figure out how the weapon got on board, why, where it came from, and is there more of it.
* ADeathInTheLimelight:
** [[spoiler: The two Lincoln Lees finally get an episode. Red!Lincoln gets shot.]]
** [[spoiler: Nina Sharp plays a prominent role in "Anomaly XB-6783746". And shoots herself in the head.]]
* DeathSeeker: Dana Gray in "Stowaway"
* DemotedToExtra: While they had fairly important roles in Season 1, Nina Sharp and Broyles have been featured less and less as the series has gone on.
** In Nina's case, this gets reversed significantly in Season 4.
* DifferentWorldDifferentMovies: The alternate universe has many examples of this.
** Many DCComics propherties are slighty different - GreenLantern and GreenArrow are Red Lantern and Red Arrow, ComicBook/JonahHex is a member of ComicBook/JusticeLeagueInternational instead of Guy Gardner, {{Superman}} died in ''CrisisOnInfiniteEarths'' instead of {{Supergirl}} and, apparently, ''TheDarkKnightReturns'' and ''TheDeathOfSuperman'' have switched their main stars, becoming ''The Man of Steel Returns'' And ''The Death of Batman''.
*** Batman clearly isn't all that popular in the AlternateUniverse. Mantis is his replacement.
** Eric Stoltz as Marty [=McFly=] in ''Film/BackToTheFuture'', obviously based on the fact that Stoltz was [[TheOtherMarty the original choice to play Marty]] in RealLife.
** At one point, Broadway is shown, complete with a poster for the musical ''[[{{Cats}} Dogs]]''.
* DisasterDominoes: The villain of "The Plateau" can kill you with a pen. He doesn't have to use it as a weapon, either. He just leaves it on top of a mailbox [[spoiler: and then you get ''hit by a bus''.]]
* DissonantSerenity
** Common with Walter since he's the CloudCuckooLander and BunnyEarsLawyer.
** [[spoiler: In the final scene of episode 3:20, after a JourneyToTheCenterOfTheMind allows Olivia to recover from a GrandTheftMe, Olivia's in a cheerful mood and having breakfast with Peter, when he asks her about the mysterious man who attacked her in her dream, she says "I don't know, but I think he's the man who's going to kill me." without breaking her smile. Then takes a bite of toast. Then roll credits. ]]
* DisposableVagrant
* DistantFinale: "Letters of Transit". Probably. Aired in a middle of storyline and ended with cliffhanger, to confuse you some more.
** And so far, every episode of Season 5.
* DoesThisRemindYouOfAnything
** Walter's conversation with his former patient/experimentee in "Momentum Deferred":
---> '''Walter''': (''regretfully'')You were young and I took advantage of you.
** In the same vein, Walter being asked if he can figure out the meaning of a complex formula in "Earthling":
---> '''Walter''': (''excitedly'') ''Yes!'' I ''can'' dominate her!
** Walter in "Jacksonville" talking about an experiment he and William Bell performed, and Peter makes a comment:
---> '''Peter''': First times are always sloppy.\\
'''Walter''': It wasn't our first time.
** In "Marionette": [[spoiler:Olivia's slow breakdown over the course of the episode seems a lot like someone's reaction to being raped. She even describes how Fauxlivia has made her unable to live in her house, wear her clothes, or be with the man she loves.]]
* DodgeTheBullet
** Averted in one episode. A mook tries to shoot Peter from behind at point blank range. Peter spins around in what looks like a Krav Maga move, redirecting the barrel so the bullet misses him, and grabs the gun out of his hand.
** Peter also just barely dodges [[spoiler: what would have been an accidental head shot from Olivia (she had... let's call it PTSD.)]]
* DontTellMama: [[spoiler:Walter to Olivia when she sees Peter is from the other side. "Please don't tell him."]]
* DoomsdayDevice: Walternate is developing one.
* DoAndroidsDream: Or in this case, "Do Shapeshifters Dream of Electric Sheep?"
* DismantledMacGuffin: Walternate's DoomsdayDevice.
* [[ActorAllusion Director Allusion]]:
** The alternate universe Fringe team from "Over There, Part 1" is filled with thinly veiled [[{{Expy}} expies]] of ''Series/{{Alias}}'' characters.
** In ''Entrada'' 3x08, Alt-Broyles and Olivia have an exchange that [[http://blarblarnyar.tumblr.com/post/2089470948/sydney-vaughn-you-have-to-get-up-we-have-to-get mirrors, almost exactly]], an exchange between [[Series/{{Alias}} Sydney Bristow and Vaughn]].
* DidTheyOrDidntThey: [[spoiler: Completely out of the blue, Nina Sharp kisses Agent Broyles in the Season Two premier.]] This is never explained or even referred to again...although some of their meetings suddenly take on a whole new light.
* DisposableSexWorker: A serial killer [[spoiler:who needs pineal gland extract to survive]] targets prostitutes. [[TopTen Sounds familiar]].
* DoubleStandard: Broyles and Olivia are both TheStoic, but for some reason a lot of critics and fans figured that Broyles was supposed to be that way (which he is), but Anna Torv was just a bad actress. Then we met Alternate Olivia and everyone realized no, she's not.
** Not to mention in 3x17, when we see Anna Torv doing a damn-near perfect emulation of the voice (at least as much as a woman can) and mannerisms of [[spoiler: William Bell]].
* DrinkingOnDuty
-->'''Peter:''' [[INeedAFreakingDrink Do you have anything stronger for my coffee?]]
-->'''Olivia:''' Yeah. Bottom draw in the cabinet behind you.
-->'''Peter:''' And here I was, halfway kidding.
* DroppedABridgeOnHim: [[spoiler:Poor, poor Charlie Francis.]] Also [[spoiler: Altlee. Considering that fact he survived nearly being blown up because the writers liked him, but gets fatally shot by a shapeshifter just so that his double can take his place in the altverse. No nanite bath for that?]]
* DrowningMySorrows:
** Becoming a pretty standard evening for Olivia.
*** [[spoiler: When Peter and Olivia are together and things are going good they at least move from hard liquor to wine.]]
** In "A New Day in Old Town," Peter and Broyles do this when [[spoiler: they think Olivia is brain-dead and won't make it]].
** In "The Day We Died", future Peter does this after [[spoiler:the death and funeral of his wife Olivia]].
** Walternate is prone to this.
* DrugsAreGood:
** Various cases are solved with the assistance of narcotics, Olivia Dunham spends much of the pilot on homemade LSD in a sensory deprivation tank, Walter is constantly using psychotropics (on himself and others), and one of his former test subjects, while decidedly loopy as a result of her LSD-induced trances, is entirely happy and expresses her gratitude to Walter years later - with a kiss.
** Which gives you AdOfWin situations when it cuts to the commercials... this show is brought to you by.. ''The Council for a Drug Free America.''
** Oddly, the only drug that's given any sort of negative implications is marijuana. Though that's not the drug's fault, it's just the only drug Walter uses a crutch when depressed. DrowningMySorrows would be too normal for Walter.
*** Actually, given that Walter is usually on 15 times of psychotropics at any one time, one could argue that marijuana likely doesn't affect him anymore, being ''tame'' in comparison to what he's usually on! Walter smokes marijuana when he's too depressed to actually get high ''properly!''
** Which also leads to perhaps one of the very first scenes ever on Network television of someone using a bong--although we don't see the actual action, we hear the distinctive sound and see Walter put the bong down and exhale. In season 3, there's also a scene in which Walter and a security guard (played by [[Series/{{Lost}} Jorge Garcia]]) pass a bong back and forth while discussing such important subjects as Walter's newly invented cupcake flavor, baconberry.
** Walter shares a joint with the usually serious COO of Massive Dynamic, Nina Sharp. [[BlatantLies It's okay. They've got prescriptions.]]
** Episode 3x19 is called "Lysergic Acid Diethylamide". That's LSD, kids. And as of now, Astrid is the ''only'' member of the central cast who hasn't been under the influence of drugs onscreen at some point.
** Walter's take:
-->'''Walter:''' Why can't we get into Harvard.
-->'''Etta:''' [[spoiler:It's been taken over by Observers, Walter.]]
-->'''Walter:''' Well, that's not a problem for someone who's done acid.
* TheDulcineaEffect: A rare female example. Olivia gets pretty upset any time a woman is in danger. We see this from the get-go with the sexual assault cases in her backstory.
* DysfunctionJunction: There's Walter, a MadScientist (this isn't a hyperbole, he was previously locked up in a mental institution) with DarkAndTroubledPast (he experimented on kids, okay). Then there's his estranged son Peter who [[BrilliantButLazy despite having an IQ of 190 dropped out of high school and ended up living a nomadic life]], which is still largely [[MysteriousPast shrouded in mystery]]. And then there's Olivia whose FBI partner and lover is killed in the pilot, and to make matters worse she seems to have started to hallucinate him and even receive emails from him. And just when you thought it couldn't get any worse it turns out that [[spoiler:she was experimented on as a child by Walter Bishop and William Bell (although she has no memory of this). Then she's trapped in an alternate universe, tortured by what seems to be light deprivation before being brainwashed into thinking she's the other Olivia, before finally making it home... only to find out that Peter has been dating the other Olivia the whole time, apparently thinking it was her.]]. Astrid seems to be pretty normal, though some fans think she's hiding something. Broyles is still pretty mysterious, although he is known to be divorced.
** Astrid is so non-dysfunctional that [[spoiler:after her alternate self has her difficult to live with father die and takes an unscheduled trip to see Astrid Prime, A.P claims that her version was difficult to live with as well. She then goes home to a lovingly cooked meal from her pleasant father, exchanging hugs and "I love you."]]
* [[spoiler:EarnYourHappyEnding]]
* EasterEgg:
** The eye catches of each episode are a [[http://fringe.wikia.com/wiki/Glyphs substitution cypher]].
** Every episode includes a visual clue to the next one. It may be a bit of graffiti, a sign on a shop, or a prop. Most are not recognizable before the subsequent episode is viewed, although some reference the upcoming episode's name.
** An Observer can be seen in every episode, If they aren't already a plot element of the episode, they'll be walking past or standing still in the background of a scene.
** "The Road Not Taken" (1x19): Walter was seen drinking a [[Film/{{Cloverfield}} Slusho]].
** ""Momentum Deferred" (2x04)": [[spoiler: The shape-changing soldier from another universe disguised as Charlie]] is also seen with a Slusho.
** As are two Observers in "Peter".
** A set of alternate universe DCComics covers adorn Peter's apartment in "[[http://is.gd/cjowb Over There:Part II]]."
* EleventhHourSuperpower
* EmpathicHealer: James Heath, though he initially used his power to transfer his illness to others.
* EnigmaticMinion: Nina Sharp, in the first two seasons.
* EvenEvilHasStandards:
** When Alt-Brandon suggests to Walternate that they should administer Cortexiphan to children, Walternate refuses vehemently. "There are lines I simply cannot cross."
*** This goes out the window when [[WoobieDestroyerOfWorlds Walternate]] crosses the DespairEventHorizon in "The Day We Died".
** Captain Windmark, who in his spare time enjoys MindRape and crushing the resistance, finds the [[AndIMustScream orifice sealing toxin]] that [[TheRevolutionWillNotBeCivilized the Bishops use to raid Penn Station]] ''barbaric''.
* EverybodyMustGetStoned: "Lysergic Acid Diethylamide" with Astrid (as always) playing the role of OnlySaneMan. Peter and [[spoiler:Broyles]] are completely out of it, Walter is a little giddy but otherwise unaffected and [[spoiler:Bellivia]] is totally fine.
* EveryoneLovesBlondes: Peter does. Though he thinks Olivia makes a very sexy redhead.
* EverythingsBetterWithCows
* EvilMakeover: For Fringe Division's [[EvilCounterpart alternate universe counterparts]] i.e. darker hair, [[GoodScarsEvilScars scars]], [[EvilIsSexy form-fitting spandex and leather]] and /or [[BadassInANiceSuit suits]].
* EvilutionaryBiologist: The Amber-verse ZFT cult contains many willing subjects thereof.
* ExpendableAlternateUniverse: Averted. People from the alternate universe aren't treated as less important than those from our universe, leading to major dilemmas when all the characters believe that only one of the two universes can survive. It's finally revealed that the reason the universes can be crossed at all is because they are linked - the destruction of one would cause the other to follow. [[spoiler:Peter links the universes together in a way that stabilizes them, and the characters from either side need to learn to work together and trust each other.]]
* ExpositoryHairstyleChange:
** Fauxlivia always wears bangs[[spoiler:, even when she's trying to impersonate Olivia]]. Olivia only wears bangs when she[[spoiler:'s been brainwashed into thinking she's Fauxlivia, which is also when she]] is wearing her hair brown.
*** Bangs is the common name for the hairstyle [[http://en.wikipedia.org/wiki/Fringe_(hair) Fringe]]
** Astrid and Peter in "The Day We Died". Not only is Peter's hair longer [[spoiler: in the future]] but it's exactly the same as his fathers'.
* ExpressDelivery
* EyeCatch: [[http://www.juliansanchez.com/2009/04/07/solution-to-the-fringe-glyph-cipher/ They form a code, too]].
* EyeRemember: Episode 2 uses a photon camera to do this on a victim who was given a muscle paralyser before hand. [[ArtisticLicenseBiology This doesn't really make all that much sense if you know anything about neuotransmission.]]
* EyeScream:
** In "Marionette" [[spoiler: the bad guy removes a man's eyes while he's awake. When the Fringe team finds the victim, he's wandering around with his eyelids pinned back so we can see the empty, gaping eye sockets.]]
** Also in "Do Shapeshifters Dream of Electric Sheep?" where Walter spends quite a while poking around in the eyesocket of a disabled shapeshifter.
** "Transilience Thought Unifier Model-11" features Walter being tortured by an Observer. Bleeding out the eyes is one of the side effects.
[[/folder]]

[[folder:Tropes F-P]]
* FailedASpotCheck: Even after becoming aware of The Observer, occasionally he will show up in such close proximity to the Fringe Team, you wonder how they ''possibly'' [[WeirdnessCensor can't notice him?!]]
* FakeAmerican: Walter and Olivia's actors are both Australians and Peter is played by a Canadian.
* FakeMemories:
** Olivia is injected with [[spoiler:her alternate's memories in a ploy to make her believe she ''is'' her alternate]]. Sadly, it works.
** Strangely, "The Plateau" shows us that [[spoiler:the alt-memory conditioning is breaking down]].
** And [[spoiler: it's completely gone as of "Amber 31422" [[HoistByHisOwnPetard thanks to Walternate.]]]]
** Although based on [[spoiler: that ridiculously accurate shot Olivia makes to the middle of a bad guy's neck in "Concentrate and Ask Again", she seems to have retained Fauxlivia's shooting skills.]]
* FictionalDocument
** The manifesto "ZFT", which stands for Zerstörung durch Fortschritte der Technologie, or Destruction through the Advancement of Technology. Apparently written by William Bell and Walter Bishop, it apparently is the manifesto of the group behind The Pattern.
** ZFT has a counterpart in the Alternate Universe, where it's published under Walter Bishop's name with a [[ChurchOfHappyology ''Dianetics''-like cover]]. However the text is very different: this version of the ZFT does not mention a parallel universe (ours) or its inhabitants. [[spoiler:Rather than a manifesto, it's a cover-up for the real reason behind "The Pattern."]]
* [[ButterflyOfDoom Firefly of Doom]]:
** From the episode "The Firefly". Three months after [[spoiler: Walter saved Peter and brought him home]], Peter caught a firefly. Because he caught it, a little girl couldn't catch it, and stayed out later than she would have. Her father got worried, was late for work because he was looking for her. It started to rain, and he skidded through a red light on his way to work and hit someone on the crosswalk. [[spoiler: That someone was the son of the keyboardist in Walter's favorite band, and the little girl is implied to have been the asthmatic woman from the jewelry store]].
** When Walter figures all of this out, he finally realizes exactly how much damage he's caused. He doesn't take it well. [[spoiler: But that was the whole [[BatmanGambit ''point'']]: making him realize it all on a personal level, and testing whether or not he was willing to let Peter die to prevent further damage]].
* FiveFiveFive: Used in "Snakehead" (2x09), after [[spoiler:Walter gets lost. He tearfully tells a woman that he knows Peter's number has "three fives" and some other numbers, but [[TearJerker he can't remember the order]].]]
* FiveManBand: Fringe Division
** In Seasons 1-3:
*** TheLeader: Olivia
*** TheLancer: Peter
*** TheSmartGuy: Walter
*** TheBigGuy: Charlie, [[spoiler: until he dies in season 2]].
*** TheChick: Astrid
*** SixthRanger: Several. Amy Jessup, but for only two episodes in season 2, [[spoiler: William Bell in the finale of season 2]], Prime-Lincoln, for one episode in season 3 and [[spoiler: Sam Weiss in season 3]].
*** SixthRangerTraitor: [[spoiler: Mitchell Loeb in season 1]]

** In Season 4:
*** TheLeader: Olivia
*** TheLancer: Lincoln
*** TheSmartGuy: Walter
*** TheBigGuy: Peter, [[spoiler: demoted to the Big Guy, due to no one remembering him in the new timeline, which results in the main characters distrusting him. He does regain his standing as the Lancer by the end of the season]].
*** TheChick: Astrid

** In Season 5:
*** TheLeader: Olivia
*** TheLancer: Peter
*** TheSmartGuy: Walter
*** TagalongKid: Etta [[spoiler: until she dies]].
*** TheChick: Astrid
*** EleventhHourRanger: Donald O'Connor[[spoiler: / September]]
* FiveBadBand:
** ZFT in Season 1
*** BigBad / TheEvilGenius: David Robert Jones
*** TheDragon: [[spoiler: Sanford Harris]]
*** TheBrute: [[spoiler: Mitchell Loeb]]
*** TheDarkChick: [[spoiler: Samantha Loeb]]
*** SixthRangerTraitor: Nicholas Boone. [[spoiler: Had a HeelFaceTurn and provided information about ZFT to the Fringe team in exchange for helping him save his wife]].
*** [[spoiler: TokenGoodTeammate]]: [[spoiler: John Scott. Really an undercover NSA agent]].

** Alternate Fringe Team in Seasons 2-3
*** BigBad: Walternate
*** TheDragon: Alt-Broyles [[spoiler: Until a HeelFaceTurn [[RedemptionEqualsDeath and death]]]]
*** TheEvilGenius: Alt-Brandon Fayette
*** TheBrute: Newton [[spoiler: untill his death]], Alt-Lincoln
*** TheDarkChick: Fauxlivia
*** SixthRangerTraitor: [[spoiler: Peter Bishop. After discovering that he's from the parallel universe, Walternate found him and convinced him to return home. However Peter quickly became aware of Walternate's plan to destroy the prime universe so he returned when Olivia and Walter crossed over to rescure him]].

** [[spoiler: And ZFT again in Season 4]]
*** BigBad [[spoiler: William Bell]]
*** TheDragon / TheEvilGenius: [[spoiler: David Robert Jones. Due to Peter not being there to stop him in the rewritten timeline]].
*** TheBrute: Nadine
*** TheDarkChick: [[spoiler: Alt-Nina Sharp]]
*** SixthRangerTraitor: [[spoiler: Alt-Broyles, once again had [[HeelFaceTurn a change of heart]] after Alt-Lincoln died]].
* FlatlinePlotline: Newton uses one.
* FleetingDemographicRule: ABC aired ''Strange World'' back in 1999. It had a very similar premise and was canceled after [[ShortRunners 3 episodes]]. ''Strange World'' itself suffered from the FleetingDemographicRule, as it aired during the run of (and shared an executive producer with) the X-Files.
* FlowersForAlgernonSyndrome: In "The Plateau", a medical group developed a treatment to make a man with an IQ of 56 into a supergenius. Eventually, he got smart enough to predict the future, and when the researchers tried to reverse the effects, he [[DisasterDominoes started killing people with physics and psychology]]. [[spoiler:Subverted in that by the time they captured him, they couldn't reverse the treatment.]]
* {{Foreshadowing}}: People from the parallel universe had a slightly different shadow in one episode (can't recall which), as seen when opening a door. [[spoiler:This includes Peter.]]
** In the season 2 finale's alternate red title sequence, most of the Fringe science concepts that appear in the background are the same, or at least similar to the normal opening sequence. But if you look closely, you'll see that something called "First People" appears in the first few seconds.
** Some of The Observer's lines can be interpreted as Foreshadowing.
*** "There is more than one of everything.": [[spoiler:Referring probably to the other universe and the fact that there are SEVERAL Obsevers.]]
*** "It must be difficult being a father": [[spoiler: He said this to Peter in "The Firefly", possibly referring to Walter, but he could also mean Peter, who would later be revealed to have inpregnated Fauxlivia.]]
** In the fifteenth episode of Season 1 (five from the finale), Peter shows a kid one of his old G. I. Joe action figures, and comments, "You know, it's funny, I always remember his scar being on the other side." That's because [[spoiler:Peter comes from the alternate universe, where the scar probably ''was'' on the other side.]]
** It takes until the ''fourth'' episode, "The Arrival", before the Fringe team notice The Observer. However, the audience have noticed him briefly appearing in the background of every episode preceeding that.
* ForegoneConclusion: "Subject 13". It is truly heartbreaking to see [[spoiler: Walter's earnest attempts to return Peter to his rightful universe and Walternate's frantic search for his missing son]] knowing that both of them are going to fail.
** Ending to the Walter's story, suggested by Ella in "Brown Betty" at first looks like DeusExMachina, created by little girl who is not good in literature technique and wanted happy ending at any cost. However, it resembles the ending of season 3 - turns out Peter doesn't have to choose who live and who die after all.
* ForeseeingMyDeath: Emily in "Forced Perspective".
* ForgottenFirstMeeting: Peter met Olivia as a kid, but seems to have amnesia about this ever happening even though he is Olivia's boyfriend now. It is heavily implied by other Cortexiphan kids that the memory loss may have in fact been intentional on Walter and Bell's parts in an effort to cover up the drug trials.
* ForTheEvulz: [=ZFT's=] apparent motive. That and showing off to the rest of the MadScientist community.
* ForWantOfANail: The Alternate Universe is full of very slight differences (and a few large glaring differences, like the ZeppelinsFromAnotherWorld) to our own. For example: CaryGrant played Sam Spade in ''Film/TheMalteseFalcon'', Martin Luther King Jr. is on the $20 and ID Cards are called "Show Me"s.
** And the flashback episode has two of the Observers coming out of a movie theatre having just seen Film/BackToTheFuture, starring Eric Stoltz, the actor originally chosen for the part because Michael J. Fox was having troubles negotiating out of his television contract. Apparently in the Alternate Universe, he never successfully cleared up his schedule.
* FreudianSlip: Walter gets a really good one in in "Grey Matters".
---> '''Walter''': Our mental patients. Mr. Slater, Mrs. Crampton, and Mr. Condom.
---> '''Astrid''': Gordon.
** Also see Walter's "vagenda" comment under GettingCrapPastTheRadar.
* FridayNightDeathSlot: Was moved here midway through its third season. It's been renewed for season 4, meaning Fringe has actually survived the FridayNightDeathSlot, making this only the third Friday/9PM show (after Millenium and Dollhouse) to get renewed since X-Files left.
** Although it was likely a coincidence (the name comes from a line of dialogue from the episode), it is amusing that the first episode aired after its move to Friday was "The Firefly," sharing the name of ''{{Firefly}}'', another science-fiction show that aired on FOX that was canceled after a move to a Friday timeslot.
* FromBadToWorse: Season 5. [[spoiler:We start off with a ''really'' BadFuture, then Walter gets kidnapped, tortured and forgets crucial parts of the plan. Then Etta Bishop dies. Then Peter starts using Observer tech]] with [[CyberneticsWillEatYourSoul undesirable side effects.]]
* GaiasLament: The AlternateUniverse was suffering from this due to reality breaking down. With the activation of the bridge, [[WorldHalfFull it seems to be getting better]].
** ''Letters in Transit'' reveals that [[spoiler: Earth was fully and irrevocably rendered uninhabitable by the year 2607, prompting the Observers to travel back in time to look for the most suitable point in history to begin again]].
* GambitRoulette: One episode had an FBI agent who was infected with a life-threatening parasite which was cured at the very last second. [[spoiler:Turns out he apparently infected himself, and the entire episode was a plan to get his wife to overhear a secret discovered by other FBI agents while they were trying to save him. But if even a single thing in the episode had gone differently - including the fact that an attempt to catch a suspect had been botched - then the plan would not have worked. Note that if the heroes were even five minutes too late, the plotter would have been dead, and if they had gotten the necessary information just a few minutes prior, the wife would not have been in the room.]] Well, if you consider that the goal was to [[spoiler:free [[MagnificentBastard David Robert Jones]], who seems to have had the fanatical devotion of ZFT, there may have been some deliberate coordination going on]]. But it still was a rather crazy plan.
** The Plateau opens with a man assassinating a woman by balancing a ballpoint pen on top of a mailbox. How? [[spoiler: The pen gets knocked down by a splash from a car going through a puddle. A man notices the pen fall, and moves to pick it up. A cyclist swerves to avoid the man and ends up crashing. The crash distracts a bus driver, and he fails to notice a red light coming up. The intended victim started crossing the street when the Walk sign lit up, and she gets hit by the bus.]] [[Manga/DeathNote Just as planned.]]
* GenreShift: Starts off as essentially a CopShow with a little mad science thrown in, shifted towards a more science fiction heavy, "save the worlds" thing and is finishing on a RagtagBunchOfMisfits fighting oppression in a BadFuture note.
* GetAHoldOfYourselfMan: Walter has to give Peter one of these in the final episode of Season 4. In all fairness, he had a fairly legitimate reason to FreakOut.
* GettingCrapPastTheRadar: All the time.
-->'''Walter''': "I want to see Agent Dunham's face when she eats my pudding."

-->'''Walter:''' And I have no idea how to bring our Olivia back. It's all because of that temptress. She tricked my son with her carnal manipulation and he fell right into her vagenda!\\
'''Astrid:''' ''Vagenda?''

-->'''Walter:''' (at a subway stop) Kent Street. I frequented a massage parlor just around the corner. I used to get off right here.
-->'''Peter:''' I sure hope you're talking about the station, Walter.

* TheGhost: William Bell, [[http://massivedynamic.com/our_leadership.php including on his company's website.]] He's played in the season one finale by [[spoiler:[[Series/StarTrekTheOriginalSeries Leonard Nimoy]]]]. For two minutes he returns in "Momentum Deferred". And then again in the season 2 finale. [[spoiler:Now he's literally an actual ghost - sort of.]]
* AGodAmI:
** In "''Peter''", we see past Walter invoke this about his decision to [[spoiler: cross into the parallel universe.]]
--> '''Walter''': There is only room for ''one'' God in this lab and it's ''not'' yours!
** [[spoiler:William Bell]] and David Robert Jones both have God complexes.
-->[[spoiler:'''Bell:''']] *to Walter* Even if you deny it now, you've always been playing God. [[BadassBoast I am.]]
* GutPunch: ''The Bullet That Saved The World''. [[spoiler: Etta's death.]]
* {{Hallucinations}}: After sharing consciousness with him shortly before he died, Olivia saw visions of John Scott for much of the first season.
** During the third season, Olivia's subconsciousness generates visions of Peter to combat her [[spoiler:FalseMemories]].
* HappierHomeMovie: The end of "An Origin Story."
* [[spoiler: HappilyMarried]]: [[spoiler: Peter and Olivia, until Etta was taken, and then restored in the finale.]] Also, as of the penultimate hour, [[spoiler: this is apparently what happened to Lincoln and Alt-Livia.]]
* HeDidntMakeIt: [[spoiler: How Lincoln is told that his Alternate died.]]
* HereThereWereDragons: Walter and Bell theorized that the abilities that developed in the children they experimented on were once a part of normal physiology until they disappeared at some point. Walter suspects aliens.
** Further hinted at in the "First People" theory which appears among the phrases in the alt-intro and in "6995 kHz".
* HeroesUnlimited: The alternate Fringe Division.
* HeroicSacrifice:
** Walter's backup plan [[spoiler:for stopping the hybrid monster? Poisoning himself so it would die if it ate him.]]
** Nicholas Boone, who [[spoiler:had his spinal fluid drained just to make sure his wife would be able to be cured, even though he knew it would give him a stroke]].
** While helping Olivia escape from Walternate, [[spoiler: Colonel Broyles is killed and chopped up by his own colleagues.]]
** William Bell [[spoiler:using his unstable atoms to power Our Heroes' trip back to the prime universe.]]
** [[spoiler: Joshua Rose setting it up so that he would be trapped in Amber, getting Fringe Division to close the case so that his identical twin brother that he'd previously rescued from the Amber could go back to his life.]]
** [[spoiler:Etta Bishop.]]
** [[spoiler: Nina Sharp's]] HeroicSuicide.
* HollywoodCyborg: Nina Sharp.
* HollywoodScience: And deliberately so.
* HomicideMachines: One episode involved a guy who created powerful EM fields when he was under stress. For some reason this caused a printer to turn malevolent just long enough to kill his boss.
* HopeSpot: There's this one glorious moment in the Series Finale when you think that [[spoiler:Donald can take Walter's place in the year 2167]] and maybe, just this once, the Bishop family will all live together happily ever after. [[spoiler:Donald gets shot and Walter still has to go.]]
* HospitalityForHeroes: A bartender in the alternate universe refuses to let Agent Broyles pay for his drink. This is because he recognizes Broyles as one of the law enforcement officials who helped deal with a major disaster (a gigantic vortex) years before; he tells Broyles that his money is no good there, because the world needs more heroes like him.
* HostageForMacGuffin: Thomas Henry Newton secures his escape in "Grey Matters" by [[spoiler:poisoning Walter and letting Olivia choose between capturing Newton and saving Walter]].
* HumanityIsInfectious: [[spoiler:Despite only having vestigial limbic systems, the Observer research team and Windmark start to feel emotion.]] Windmark more or less mentions this trope word for word.
* HurtingHero: Walter has helped solve every case the Fringe team comes across. [[spoiler:His son also died, causing him to go to the Other Side and kidnap that Peter. As such he is responsible for the war with the Other Side and knows it, just as he is partially responsible for his late wife's suicide. He has also spent 17 years in a mental institution with little to no outside contact, and he has had pieces of his brain removed, leaving him with severely compromised mental faculties.]] Though he spends most of his time munching on candy and dancing around dead bodies, it's hard to watch his scenes [[spoiler:with Bell]] and think he's happy. Then we have Olivia, whose life has been described by another character as "something of a nightmare." [[spoiler:And that's before she gets trapped in a parallel universe, tortured by light deprivation, brainwashed into thinking she's another Olivia, narrowly escapes having her brain cut out, and finally manages to get herself back home... only to find out that the other Olivia has been living her life and even dating Peter, the man she loves.]] Her life sucks.
* IChooseToStay:
** [[spoiler: When the bridge between both universes is being closed, our side's Lincoln Lee chooses to stay in the alternate universe.]]
** [[spoiler: Peter decides to stay in his adopted universe rather than the one he was born in.]]
* IDidWhatIHadToDo
** Appears to be William Bell's justification for experimenting on children who ended up, in some cases, exploding, becoming suicidally depressed over their condition, and having their lives ruined by a ceaseless array of nightmarish visions. [[spoiler:As of "Over There" part 1, this was key to getting to the alternate universe as part of the attempt to save Peter and prevent TheEndOfTheWorldAsWeKnowIt.]]
** Also the justification the colonel gave for detonating the subjects of Project Tin Man in "Fracture" (S2 E03).
* IKnowYouKnowIKnow:
** The bad guy in "The Plateau" can use math to predict and manipulate the future. When Charlie and Olivia realize what it means for their investigation, they call Astrid and ask her if it's possible to compute whether he'll predict between their two choices. She says it's a mathematical impossibility, an infinite loop, and basically gives this trope. He can predict what they'll do since he knows that they know that he'll know he can predict them knowing that he can predict them, etc. Olivia just says "screw it" and decides to go to the hotel. [[spoiler:AnswerCut to the bad guy standing in front of a window with a hotel sign visible next to it.]]
** Subverted in the same episode in a rather clever way - the bad guy relies on Olivia following a particular protocol to keep the dominos of his plan falling - he thinks he knows she knows he knows. She of course DOESN'T know - being from the other universe, she's unfamiliar with the protocol.
* IdiotBall:
** Peter, third season. [[spoiler: He's known Olivia for over two years now, he's realized Olivia is acting differently, he's surrounded by body-double-imposters from the Other Side, and yet he doesn't realize that the woman he's now sleeping with is Fauxlivia.]] This is made even worse by the fact that Peter was once a conman and claims to have a knack for reading people. Pull yourself together, Bishop. Peter did notice a lot of details being very off, but he kept rationalizing over them because of his love for Olivia [[spoiler:(the one he knew)]]. Peter notes in the pilot that he can't really read Olivia, meaning it'd be harder for him to figure out that it wasn't actually her.
** The fact that the Fringe group repeatedly gets tricked by alternates is just sad. Almost as bad is [[spoiler: Charlie being replaced by his double, when they KNEW that Charlie was fighting a shapeshifter hand-to-hand no one ever bothered to check and make sure he's the correct person. The fact they repeat it with Fauxlivia is just painful.]] And they fell for the shapeshifter switch yet again!
** In the second season episode ''Reciprocity'', [[spoiler: Shapeshifters are being taken out by Walternate, and their names are showing up on files in Fauxlivia's computer files. Once this happened the first time, they didn't think to simply search those files for names of highly placed people, instead doing random blood screening while more and more potential sources of information are being wiped out.]]
** Peter (and later Olivia) in Season 4, [[spoiler:if they knew that there were differences in the altered timeline, why didn't they immediately cross-reference all their alternate case-files? Especially with Olivia's photographic memory, they may have been able solve any number of cases that only one timeline had accomplished. This even bites them in the ass, when their knowledge of the cortexiphan children may have helped them catch Jones]].
* IfIDoNotReturn: [[spoiler: Peter to Astrid when he decides to enter the Machine.]]
---> [[spoiler:'''Astrid:''' Are you sure you don't want me to call [[LoveInterest Olivia?]]]]
---> [[spoiler:'''Peter:''' If it doesn't work, she's going to find out soon enough. Just tell her that-]]
---> [[spoiler:'''Astrid:''' Whatever it is? You'll tell her yourself.]]
* IJustWantToBeNormal: "Baby Boy Brian" AKA Eugene underwent experiments that made him invisible and also put off a fatal condition. He spent his episode stealing other people's pigment to make himself visible again, [[spoiler:never mind the fact that it would kill him]]
* ImNotAfraidOfYou: Olivia does this during the JourneyToTheCenterOfTheMind.
* ImpostorExposingTest: The cyborg shapeshifters have mercury for blood. Blood screening is standard procedure when shapeshifters are at large.
* ImprobableAimingSkills: Fauxlivia has an incredible knack for shooting people right between the eyes. Becomes a plot point in the Season 3 premiere, when Olivia pulls off an absolutely insane shot to a gas gauge with a handgun from a car moving at full speed. [[spoiler:It means the brainwashing is working.]]
** Olivia [[spoiler: seems to have retained her newfound marksmanship skills even though the brainwashing isn't permanent.]] [[{{Foreshadowing}} What this means]] [[RedHerring is unclear.]] Later episodes have shown that she remembers ''all'' her time over there (she gives frequent guidance on how Fringe Division does things as events warrant it), she's just clear now that [[spoiler: she's not Fauxlivia, although she remembers being her]]. So that's okay, then. Probably.
** Although Olivia was frequently capable of pulling of PrettyLittleHeadshots ''before'', so it's not like she wasn't a decent marksman already? Not at Olympic level like Fauxlivia, but still pretty good!
* IncrediblyLamePun:
** The title of the episode with the melting brains? "No-Brainer".
** The one about rapid aging? "The Same Old Story".
** People getting turned to dust? "Earthling".
** [[AlternateUniverse Walternate.]]
** [[OverlyLongGag Fauxlivia.]]
** Most titles on the soundtracks are amazingly awful.
* IncurableCoughOfDeath: Young Peter's mysterious terminal ailment. See also SoapOperaDisease.
* InformedAbility: Peter's genius-level intelligence, most of the time. It doesn't help that he's often standing next to Walter, who makes pretty much everyone else seem stupid by comparison.
* InnBetweenTheWorlds: Building where the machine is stored. From one end it is our universe, from other - it is alternate. From window you see clear sky, from another - clouds and [[ZeppelinsFromAnotherWorld zeppelins]].
* InsaneEqualsViolent: Averted in Walter's case. He was much more morally dubious when he was fully sane, but after his mental breakdown he becomes a harmless old man. [[spoiler: Further exemplified in how Walternate is sane, yet is much more willing to take violent, drastic measures.]]
* InSeriesNickname: [[spoiler:Walternate. And now... Fauxlivia]]
* InsistentTerminology: Alternate Charlie has [[strike: worms]] arachnids [[ContinuityNod under his skin.]] [[RunningGag They're NOT worms.]]
* InSpiteOfANail: In season 4 [[spoiler: Peter's death in the 1980s]] has resulted in almost the same present day for the [[spoiler: remaining]] main characters, [[spoiler: with minor backstory changes and Alt!Broyles still alive]].
* InTheFutureHumansWillBeOneRace: The Observers all share a very distinctive appearance. They also appear to be a OneGenderRace; we have to see any female Observers (that we know of).
* InterdimensionalTravelDevice: Several different versions, including: Walter's portal, which causes both universes to begin collapsing; William Bell's technique by which he pulled Olivia into the AU (usually only works on hybrid Super Soldiers who are designed to survive the crossing; it worked on Olivia because of her Cortexiphan-enhanced physiology); and the natural way, which is achieved by groups of Cortexiphan Kids being guided by Walter (and of the three, is clearly the least dangerous, to dimensions and dimension-crossers, but not without its kinks).
** The Alternate Universe might also possesses rod-like interdimensional travel devices invented by Walternate, but they were part of a deception that fooled Alt!livia. It's not established for certain if the devices actually work or not; or if the one that Alt!livia forced Brandonate to give her just happened to be a dud.
* InterrogatingTheDead: Mentioned in the pilot. Done in "In Which We Meet Mr. Jones" (1x7), and again in "Brave New World: Part 2" (4x22).
* InterserviceRivalry: Fringe Division with the CIA.
* IntoxicationEnsues: Walter (frequently).
** Hilariously, Walter's fine during "Lysergic Acid Diethylamide". It's Peter and [[spoiler: Broyles]] (!) who are as high as kites.
* InWhichATropeIsDescribed: "In Which We Meet Mr. Jones" (1x7).
* IronicEcho: Naturally, in a show about parallel universes, this trope pops up a lot. Examples include:
** When Broyles is trying to convince Walter to help them deal with the machine in "The Box," he says that the government made similar arguments to Robert Oppenheimer (the scientist who led the Manhattan Project), and asks "how do you think he slept after his little invention had killed hundreds of thousands in a fraction of a second?" In "6:02 AM," [[spoiler: just before turning on the machine,]] Walternate also compares himself to Oppenheimer - and talks about the nightmares he had after Hiroshima and Nagasaki.
* JackBauerInterrogationTechnique: In the pilot, Peter uses a coffee mug to repeatedly smash the fingers of a suspect in order to get information.
* JourneyToTheCenterOfTheMind: The pilot and "Lysergic Acid Diethylemide".
* JustThinkOfThePotential: Massive Dynamic employees are guilty of this more often than not.
* JustBeforeTheEnd: BadFuture from episode "The Day We Died". If "Hope" is listed among mad science topics, you know it's bad.
* KarmaHoudini:
** Tyler Carson in "Of Human Action". He murders several cops, injures multiple innocent people and displays all the hallmarks of a budding sociopath, but since he's only 15, he won't face any jail time. [[spoiler: Ultimately subverted . They all ''think'' he gets away but at the end of the episode, he ends up being drugged unconscious and hidden somewhere in the depths of Massive Dynamic with the other seven Tylers.]]
--> '''Peter''': Kid goes on a killing-spree and all they're gonna do is make him talk it out with a bunch of shrinks...
** [[spoiler:William Bell ultimately gets away with trying to destroy two universes.]] Unless Fringe Division catch up with him later.
* KarmicDeath: In the first season finale, [[spoiler:David Robert Jones]] repeatedly attempts to [[spoiler:open a portal to a parallel universe, at one point resulting in a young soccer player being PortalCut]]. At the end of the episode, Peter [[spoiler:uses one of his father's gizmos to plug the dimensional hole as Jones is trying to escape through it--[[Literature/HarryPotter Splinch]]]]!
** Don't forget her first [[spoiler: season BadBoss, audibly saying he's going to get rid of a pyrokinetic]] about to have a [[PowerIncontinence terminal overload incident]] where she can see him.
* KickTheSonOfABitch: No one was really upset when one of the people treated with Cortexiphan [[spoiler: roasted Sanford Harris like a Christmas ham.]] Or when Walter [[spoiler: verbally castrated Olivia's stepfather.]] Or when Fauxlivia [[spoiler: floored alternate Brandon during her HeelFaceTurn.]]
* KillerRabbit: Killer butterflies that cut! (Cutterflies?) A different kind of ButterflyOfDoom...
* LampshadeHanging: Amongst others:
--->'''Walter:''' That makes as much sense as anything else we've done.
--->'''Astrid:''' That makes no sense at all!
--->'''Walter:''' My point exactly.
* LarynxDissonance: Anna Torv mimics the voice of [[spoiler:William Bell when he possesses Olivia.]]
* LaserCutter: Walter and Astrid use one to excise videotapes containing [[spoiler:a plan to defeat the Observers]] from amber.
* LaserGuidedAmnesia: An apparent side-effect of surviving the memory-transfer process used by the antagonist in "One Night In October" to take people's happy memories.
* LateArrivalSpoiler: No advertisements, reviews, or discussions of ''Fringe'' bother to hide that there's an alternate universe involved. Mostly because it'd be impossible to explain otherwise by Season 3.
* LawOfInverseFertility: [[spoiler:Peter and Fauxlivia.]]
** [[spoiler: Sort of subverted at the end of season 4 when Olivia is revealed to be pregnant shortly after expressing a desire for a house with a nursery.]]
* {{Leitmotif}}: An ominous flute-theme usually plays when The Observers are featured.
* LimitedWardrobe:
** Olivia wears almost entirely grey, white, and black. [[spoiler:Turns out she, and others, were trained to.]]
** Nina wears black (unless she's riding). [[spoiler:Her alternate wears red.]]
* LinkedListClueMethodology: Season 5.
* LiteralChangeOfHeart: In the "Brown Betty" episode.
* LittleNo:
** Peter's response when [[spoiler:Etta dies.]]
** Nina's reaction to finding out that, despite everything that he had done, [[spoiler:William Bell still loved her.]]
* LivingEmotionalCrutch: Peter to Walter. [[spoiler: This is made even more poignant in series 4, where we get to see how reclusive and afraid Walter is without Peter in his life.]]
* LivingMemory: After Olivia enters John Scott's subconscious via a MentalFusion. In season 3, [[spoiler:brainwashed Olivia has Peter show up towards the end of "The Plateau" and introduce himself as one of these]].
** This happens again in season 4, [[spoiler: when Walter keeps catching glimpses of Peter after he has been erased from the timeline.]]
* {{Lobotomy}}: Walter Bishop tries to self-lobotomize because he believes his visions of Peter mean that he's losing his mind.
* LossOfIdentity: What Walternate forces on [[spoiler:our universe's Olivia]] in the third season premiere.
* LostSuperweapon: Newton seems to be tracking down the pieces of one.
* LoveDodecahedron: Well... [[spoiler: Peter is in love with Olivia who liked John at first but he died and she liked Peter back but she doesn't remember him as of season 4 and now has a thing for Lincoln who is quite smitten back but is friends with Peter who seems to ship them as well for some reason but Olivia remembered Peter again and now Lincoln is broken hearted and in the alternate time line Peter thought that Fauxlivia was Olivia and spent seven episodes enamoured with her but she was dating Frank but Alternate Lincoln liked her too and seemed to be fond of our Olivia as well when Walternate mind raped her into thinking she was Fauxlivia but in the amber timeline Fauxlivia has broken up with Frank and Lincoln was her "shoulder to cry on" but then he died but the other Lincoln said he'd stay and help and Seth Gabel ships them and]]... I think that's it.
* LoveTranscendsSpacetime:
** [[spoiler: Peter and Olivia.]] They've been separated by universes. [[spoiler: Peter]] has been erased from existence. [[spoiler: Olivia has been shot in the future.]] They've crossed between universes, rewritten time lines and changed the future. Damn straight it transcends spacetime.
** [[spoiler: blue!Lincoln crosses into a dying universe for Fauxlivia.]]
** Most of the other examples in the series are {{Deconstructed}}, the elderly couple from "6B" who miss their other halves so much that they nearly break the universes, Alistair Peck and his time travel device and the man from "And Those We've Left Behind" who tries to make a bubble in time so that he can stay with his wife in the past before she can get early onset Alzheimer's and accidentally ends up creating dangerous time loops.
* LoveIsAWeakness: In one episode, Newton poisons [[spoiler:Walter]] and when cornered by Olivia, looking to bring Newton into custody, he reveals a three-step antidote process to counteract the poison, but he'll only agree to give Olivia the correct order for administering the antidote if she lets him go. Having to choose between arresting her target or saving her colleague and friend, she chooses to save [[spoiler:Walter]]. As promised, Newton upholds his end of the bargain and [[spoiler:Walter]] is saved, but before he makes his break, he tells Olivia, "Now I know how weak you are."
* LoveMakesYouCrazy: [[spoiler:August's love for Christine leads to him performing some very un-Observerish behavior, namely, deciding to forgo just watching and actually interfering with the course of history by saving Christine's life.]]
* LukeIAmYourFather: [[spoiler:September/Donald reveals that he is Michael's father in The Boy Must Live.]]
* MadMathematician: One of Walter's fellow patients at the St. Clair's asylum. [[spoiler:The poor guy was made that way and ended up killing his wife.]]
* MadScientist:
** Walter Bishop, who's moved towards the 'endearingly confused and absent-minded' end of the spectrum rather than the 'really insane' side after leaving the asylum. He's also TheWormGuy and the OmnidisciplinaryScientist.
--->'''Dr. Bishop''': The only thing better than a cow is a human. Unless you need milk, then you really need a cow.
** Walter tends to shift from one end of the spectrum to another many times per episode. Rather than being inconsistent writing, this tends to make most anything involving Walter absolutely terrifying and remind you that the guy who spent 20 minutes talking about French toast is probably the most dangerous person in the whole show.
*** The audience is reminded forcibly in ''Letters of Transit'' where [[spoiler:he has the excised parts of his brain restored, and promptly becomes starts outwitting ''Observers''.]]
** William Bell, his ex-partner, might be on the 'take over the world' side after he parlayed his research with Bishop into a massive company with a nebulously-defined "specialty" (a billboard for the company says "What do we do? What ''don't'' we do?"). [[spoiler:Turns out Bell isn't really so mad after all. In fact, he's one of the ''good'' guys (as far as we know).]]
*** [[spoiler:Played damn straight in Season 4.]]
** Many, many minor characters.
* MadScientistLaboratory: The Harvard laboratory is the most prominent one but you've got dozens of others.
* MadScientistsBeautifulDaughter: An uncommon male example in Peter Bishop. While he's far from the naïf, it's an interesting play on the trope.
* MadeOfIron:
** Olivia takes a ''lot'' of punishment in "Bound" and keeps on fighting.
** To a lesser extent, the shapeshifters.
* MagicFromTechnology: In 2x12 ("Johari Window"), wherein a whole town of mutants appear normal [[spoiler:via a sustained elctromagnetic pulse]], Walter claims that [[ArthurCClarke an old friend]] once said that any sufficiently advanced technology is indistinguishable from magic.
* ManlyTears: Both Peter and Walter have done this a few times.
* MarriedInTheFuture:
** Peter Bishop spends a week in the future, where he is married to his long-time Love Interest Olivia Dunham. [[spoiler: It does not end well for Olivia, unfortunately. Come to think of it, it doesn't end well for anyone.]]
** In the penultimate hour, when Olivia makes one last trip to the red-verse after being ambered for over 20 years and not aging, she reunites with Bolivia and Lincoln, who have aged normally and are now middle-aged, married, and have a son, going by their wedding rings and the family picture glimpsed on Bolivia's desk.
* MassOhCrap: ''"6:02 am"'' has a few of these casually strewn about the place. [[WhamEpisode It's that kind of episode.]]
* MaybeEverAfter:
** [[spoiler: It's left ambiguous whether or not Lincoln and Fauxlivia get together but he's smitten and she doesn't seem opposed to him permanently crossing into her universe.]]
*** [[spoiler: When Olivia crosses over in the series finale, they're shown to be married with a son.]]
* MechanisticAlienCulture: The Observers [[spoiler: who are future descendants of humanity]] hint at this with their uniformity, odd behavior, CreepyMonotone speech, and severely dulled sense of taste in contrast to their subtle perceptions of the flow of time, play this and most of the original [[TheMenInBlack MIB Mythos, see above]] pretty straight (that is, up until the episode "Letters of Transit"). It's possible the Scientific Team September, August, et al were a part of was some kind of "scientific caste" in Observer society; the behavior of the "Overseer" Observers in [[spoiler: the possible version of the year 2036 in]] the episode "Letters of Transit" were much more carnal and human-like, and did not seem to use the same CreepyMonotone (though one or more of those traits might be due to prolonged exposure to modern/TwentyMinutesIntoTheFuture human behavior).
** There appear to be no female Observers (at least none have been seen so far), and how or if they reproduce has never been addressed. They are also [[DittoAliens Ditto Posthumans]], being extremely uniform, even when they appear in large numbers. [[NoNewFashionsInTheFuture They all seem to wear variations on a suit and a decades-out-of-style hat]]; this also includes when they appear in large numbers; the episodes set in the future make it clear that all Observers dress like this, not just the members of September's Scientific Team.
*** In ''The Boy Must Live'', we are shown that Observers are grown in tanks (making them all test tube babies and possibly clones) and are released upon reaching physical maturity. Michael was discovered as an anomaly while still in the pre-adolescent stage of physical development, hence why his physical appearance is that of a child.
* MediumBlending: When Walter and Peter go into Olivia's mind, the world switches from live action to a rotoscoped, cel-shaded cartoon as soon as they meet William Bell. Apparently they couldn't get Leonard Nimoy to appear in person so they had to come up with something to use him in the episode. He was unwilling to go back on his retirement (announced following completion of the Fringe S2 finale), but he was prepared to do the voicework, hence the animation.
* MegaCorp: Massive Dynamic: What ''don't'' we do?
* MemoryGambit: Walter pulls one in season 5 to prevent [[spoiler:the Observers from finding out the plan to defeat them.]]
* TheMenInBlack: The Observer seems to play this very close to the classic understanding of the MIB image.
* MentalTimeTravel: [[spoiler:In the 3rd season finale, the mind of Peter's younger self is pulled into the BadFuture to prevent it by showing what will happen if he uses the machine to destroy the alternate universe.]]
* MindOverMatter: [[spoiler:[[CoconutSuperpowers It's said that Olivia has this]] from being experimented on as a child.]]
** [[spoiler: And she does have telekinesis as proven in last two episodes of season 3.]]
* MindRape: [[spoiler:Walternate does this to Olivia. Even [=Alt!Broyles=] has a bit of a WhatTheHellHero moment.]]
** The Observers can do this (particularly the Invaders in the BadFuture shown in "Letters of Transit" and [[spoiler: Season 5]]).
* MindScrew: [[http://www.youtube.com/watch?v=BdkWA26qXhw '' "Death. I saw death. All of it. And it was '''me'''.]] And yes, there were drugs involved.
** [[FridgeBrilliance Makes a lot more sense]] when you realise that Broyles came face to face with [[spoiler: His own dead body]].
* MirrorMatch: Olivia vs. Olivia in "Over There, Part 2".
* MixAndMatchCritters: The freakish beast from "Unleashed". Some of the iconic images used to promote the show also have features of this trope.
* ModestyBedsheet
* TheMole: [[spoiler:John Scott, who was working with Steigman prior to the events of the pilot]]. And not to mention [[spoiler:Agent Loeb]]. And as it turns out [[spoiler:Sanford Harris]]. And now [[spoiler:the alternate universe soldier posing as Charlie]]. Again with [[spoiler:Alternate-Olivia sneaking into our universe]]. And then [[spoiler:Amberverse Col. Broyles working for Amber-Jones]] This show loves this trope.
* MoralityChain:
** Brought up in "One Night in October", when a forensic psychologist is brought to the other universe to profile his SerialKiller EvilTwin, and it turns out that the key difference between the two is that the psychologist, as a child, had met a woman who taught him to manage his destructive urges, while his counterpart never did. After [[spoiler: the evil twin steals his memories of the woman, there's concern as to whether he'll go evil without them. Broyles says that while they'll keep an eye on him, he believes some people make a mark on others that cannot be erased]].
** Deconstructed in "Five Twenty Ten". Walter is adamant that Peter's love and support will prevent him from turning into his old self. [[WithGreatPowerComesGreatInsanity Nina expresses her doubts]] and [[spoiler:tells Walter how her love for William Bell]] wasn't enough to stop him from PlayingGod. Walter dismisses her [[KickTheDog (rather cruelly)]] but she turns out to be right. [[spoiler:In the end, Michael helps Walter by giving him his memories from the other timeline]] and by giving him a little reality check.
* MotherlyScientist
** [[spoiler: Doctor Penrose]] is a dark, GenderFlipped version. He helps his "son" murder women in a [[AndIMustScream particularly nightmare inducing way]] so that his son won't end up dying of RapidAging.
-->'''Killer:''' He... he should have let me die a long time ago. I was an experiment. Someone... someone paid him. The man I call my father. He should have let me die. That was his mistake. But he was blinded because he loved me. ''He loved me...''
* TheMountainsOfIllinois: The show tries to pass off Vancouver as Boston. They do not resemble each other.
* MurderByCremation: [[spoiler:Charlie is killed off-screen by a shape-shifter and disposed of in a hospital incinerator.]]
* MusicalEpisode: "Brown Betty" is a detective story Walter tells Ella while Olivia is [[spoiler:looking for a disappeared Peter]]. In it, Olivia is a hard-boiled pulpish detective, Walter is a MadScientist MartyStu [[spoiler:[[SubvertedTrope though not so much, as it is revealed]]]] and the setting is an AnachronismStew of 30's atmosphere and modern/future technology. This trope is played with when Rachel first starts singing, and Walter's voice comes out. This doesn't happen when other characters start singing however.
* MushroomSamba: "Lysergic Acid Diethylemide" and "Black Blotter".
* MyGodWhatHaveIDone: This, followed immediately by DrivenToSuicide, is the reaction of [[spoiler:a SerialKiller after he essentially acquires empathy/conscience from his alternate universe counterpart.]]
* MysteriousPast: Much of Walter's life before he was admitted St. Claire's is still shrouded in mystery. This also applies to Peter, who has a pretty sketchy background.
* MythologyGag: Take a shot every time one shows up in "Brown Betty". You'll be dead in less than half an hour.
* MysteriousWatcher: The Observer. Played with during his first featured episode when [[spoiler:the camera pulls out at the end of the ep to reveal him watching, as per usual for the trope, then [[DynamicEntry Peter comes out of nowhere]] with a haymaker to the Observer's jaw and demands to know who he is and what's going on]]. He's appeared in every ep so far, doubling as an EasterEgg. He has also appeared in ''other'' Fox programs, including NFL games, NBA games, and ''Series/AmericanIdol''.
* NakedPeopleAreFunny: Walter. Walter, Walter, Walter. Examples include Olivia finding out about his "cooking naked on Tuesdays" habit in "6:02 AM" - the hilarious way.
* NamesTheSame: Thomas Jerome Newton: see also TheManWhoFellToEarth. The similar background stories (They are not from this earth) makes this a deliberate ShoutOut.
* ANaziByAnyOtherName: The Occupation in season five is a extreme case. Master Race who considers themselves above others? Check. Society divided between the "lower" humans and the humans who serve a Master Race, ([[spoiler:The Observers]])? Check. "lower" humans live in ghettos in subhuman living conditions without access to a proper education, food or medicine? Check. Heavy worshipping of the aforementioned Master Race? Check. LaResistance is formed? Check. Constant witch hunts and heavy militarism? Check.
** The uniform of the Loyalists also heavily resembles the Wehrmacht.
** The imagery is really taken UpToEleven in "The Boy Must Live" (which, coincidentally, is the eleventh episode of the final season.) [[spoiler:In the final ten minutes, the Observers set up roadblock checkpoints, drive up and down the street in Humvees, and soldiers are marching through the train station in search of Michael.]]
* NeckSnap:
** David Robert Jones kills his lawyer this way as part of his escape plan.
** [[OurVampiresAreDifferent Spinal fluid vampire lady,]] Valerie Boone, Valerie Boone. (She turned March into June).
** [[spoiler: Peter does this to an Observer in 5x06.]] That's when we know that his abilities are kicking in.
* TheNeedsOfTheMany:
** Much of Walter's character development is centered around this trope.
** The justification for using Amber. Hundreds of people trapped in a continue loop of fear... but the universe won't rip itself apart.
* {{Nerdgasm}}: Brandon has one, with a combination of ProperlyParanoid when researching Observer sightings.
* NeutralFemale: PlayedWith in "Brave New World, part 1". [[spoiler: David Robert Jones]] sneaks up on Peter, dislocates his shoulder and proceeds to beat the crap out of him with a crowbar. Olivia is on the roof of another building, watching helplessly until [[spoiler:the cortexiphan kicks in. She ''possesses'' Peter and then goes all Xbox kinetic on his ass.]]
* [[NeverRecycleABuilding Never Recycle A Room]]: Walter the MadScientist returns to his lab in the basement of a Harvard building after 17 years and just has to just dust the place down before getting back to work; not only has the space been left unused, but all his equipment is still there. Considering what he was [[MadScientist working on]] leaving it alone might be the smartest thing a university has ever done. Walternate's lab wasn't recycled either.
** The site in Jacksonville where William Bell and Walter [[spoiler:conducted their experiments on Olivia]]. {{Handwaved}} by Bell buying it and then keeping it shut down.
** Alistair Peck's lab.
* NeverTrustATrailer: "Brown Betty" was advertised as a quirky, lighthearted MusicalEpisode. [[MoodWhiplash It]] [[LoveHurts really]] [[TearJerker isn't]]. [[ArsonMurderAndJaywalking There's also only one real musical number]].
** And the trailer for the German premiere of this episode [[{{Flanderization}} flanderized]] the [[NoirEpisode noir aspect]] by being DeliberatelyMonochrome and utilizing "old movie"-style fonts. (Both also not to be found in the episode itself.)
* NextSundayAD: Presumably, given several references to President Obama, it's this as opposed to TwentyMinutesIntoTheFuture.
** Given that the Fringe division and everything it does is kept a secret from the public, it's possible that it's happening ''right now'' and [[ParanoiaFuel you just don't know about it.]]
* NiceJobBreakingItHero: [[spoiler:Nice job saving Other Peter's life, Walter. Too bad that now we have two universes ready to collapse.]]
** [[spoiler: Also, the BadFuture in the season 3 finale.]]
*** [[spoiler: Congratulations ''[[WhatTheHellTownspeople everyone]]'' for locking Walter away in prison! Sure, you want to punish him for accidentally causing the near-destruction of the world, but did it ever occur to you, that you might have just locked away the one person capable of potentially ''fixing'' the problem?]]
** [[spoiler: Nice job observing Walternate, Observer. You should be fired.]]
*** [[spoiler: Though the Observer does admit he's prone to getting involved when he shouldn't and accidentally reveals too much.]]
** [[spoiler: "Subject 13" reveals that a young Olivia accidentally crossed over and alerted Walternate to the existence of the Primary Universe.]]
** In "The Bishop Revival", Walter and Peter have a falling out when he reveals that about ten years earlier he had sold some of Walter's prized books. Turns out the books were smuggled out of Nazi Germany by Walter's father and contained a formula for a programmable bioweapon, which is now being used against people.
*** Then subverted, as it turns out the person who bought the books is just an artist, leaving them unsure who managed to perfectly replicate the formula? [[spoiler: The ending implies that culprit was OlderThanTheyLook and broke into Walter's lab, decades earlier.]]
* TheNicknamer: Walter refers to William Bell as "Belly", his parallel universe doppleganger as "Walternate" and Astrid as... basically any name beginning with the letter A.
** In the latter case, one interpretation is that he pretends to forget Astrid's name simply to [[{{Troll}} screw with her]], as he seems to ''consistently'' get it right when she's ''not'' around!
* NightmareFetishist: Walter gets fired up rather than horrified by the grotesqueries they confront.
** Ella is strangely nonplussed by the weird and freaky as well, which might foreshadow her [[spoiler: becoming a Fringe agent in the future]].
** Also Doctor Mona Foster. Her response to being told that bugs ate their way out of a person is keen interest. She also has a crush on [[spoiler: Scarlie]] because of the arachnids that live under his skin.
* NightmareFuelColoringBook: In Season 4, a girl named Emily has visions of how people die,she carries a drawing pad with her so she can quick draw them out before she forgets them.
** In "The Ghost Network", Roy also would sketch down images of pattern-related events as they were happening in real-time.
* NinetyPercentOfYourBrain: "Ability" averted this but replaced it with a similar concept. The trope was later invoked in the commercial for "Of Human Action", though not the episode itself. Further explained that at the special abilities that characterise the [[SuperSerum Cortexiphan]] patients [[spoiler:used to exist throughout humanity but faded out all a sudden]]. Walter suspects it was aliens who caused the loss of abilities.
* NoOneCouldHaveSurvivedThat: A woman falls from a building in episode 3x17 and walks away. Later we find out she was murdered eighteen months ago and escaped from the morgue.
* NoPaperFuture: The other universe is apparently like this, to the extent that the presence of a ballpoint pen at a crime scene is the most exotic thing about it. The clue leads them to a research center where mentally-handicapped patients have difficulty using computers and tend to write with pens instead.
* NoirEpisode: "Brown Betty" (2x20), also doubles as a MusicalEpisode.
* NoodleImplements: Astrid does not want to know what Walter intends to do with a porn magazine and a portrait of GeorgeWBush.
** It's Walter. Given his politics he probably wanted to make a collage.
* NoodleIncident: Whatever case landed [[spoiler:Alt-Charlie]] with [[BodyHorror arachnid eggs infesting his body]].
** Presumably the same case that left "our" version of the character with them, only they couldn't synthesise a cure, only a control measure.
** Basically ''anything'' Walter says that he's worked on for the Government. They had him doing some ''weird'' stuff.
** One from the Alternate Universe. In "Fractures" we see a homeless man on the street, who's apparently an "Arusa War" veteran.
* NoYou:
** From "Ability"
-->'''Olivia:''' I was hoping you'd have one of your weird connections.
-->'''Peter:''' ''Weird'' connections?
-->'''Olivia:''' They're always a little weird.
-->'''Peter:''' [[LameComeback Well, you're always a little weird.]]
** Also in "Enemy of My Enemy"
-->'''Fauxlivia:''' I've just got kinda a hunch that this other Lincoln is telling us the truth.
-->'''Lincoln:''' [[AlternateSelf It must be because he has such a trustworthy face.]]
-->'''Fauxlivia:''' *laugh* See, I think he's kinda funny looking.
-->'''Lincoln:''' You're funny looking.
* NotSoDifferent: Walter and most of the MadScientist antagonists. In fact, most of the time, they are simply following ''his'' original work to it's obvious conclusion. This does not escape anyone's notice.
* OrbitalKiss: [[spoiler: Peter and Olivia at the end of "A Short Story About Love."]]
* ObliviousGuiltSlinging:
** Peter to Olivia and Walter towards the end of second season.
** Olivia to Peter at the start of "Marionette."
* ObstructiveBureaucrat: Sanford Harris deliberately uses his administrative leverage to hinder Olivia's work, as revenge for a past conviction on sexual harassment charges [[spoiler:and especially because he's TheMole]]. "I have lots of red tape."
* OceanicAirlines: The show has an ad for Oceanic.
* OhCrap:
** Nina Sharp's expression in "Peter" [[spoiler: after her arm]] ''[[spoiler:starts flickering]]'' screams this trope.
** The Observer in "Letters of Transit." Causally observing the device Walter made... and then realising what it is.
** Milo Stanfield in "The Plateau" when Olivia doesn't die as he had predicted.
---> Well that wasn't supposed to happen...
* OminousVisualGlitch: When Olivia sees something from "the other side", it flickers and shimmers visually. Usually it's indication of a serious problem. In this case, it is the audience seeing what Olivia sees.
* OmnidisciplinaryScientist: Walter specializes in neurology, genetic manipulation, amateur surgery, and basement time/space machines. And pharmacology
--> Walter: Excellent! Let's make some LSD!
* OnceAnEpisode:
** The Observer, the cow.
** Played with in ''Brown Betty''. Several Observers show up in that episode at the same time as generic {{Mooks}}, as well as a ''polka-dot'' cow in Bizarro!Walter's lab.
** All episodes also contain a link to the next episode, for example the Beacon from "The Arrival" is shown on a sign in The Ghost Network.
* OneDegreeOfSeparation: It turns out that [[spoiler:Olivia was one of the children that Walter Bishop and William Bell experimented on]].
* OneSteveLimit: Averted. There are several Josephs in the first season, and a minor character in season 4 is named Olivia.
* OrificeEvacuation: In "Bound" an immunologist is killed by a slug which escapes through his mouth.
* TheOtherDarrin: Incredibly, Gene, the team cow. The cow used in the pilot had to be replaced because of livestock restrictions.
* OtherMeAnnoysMe
* OurVampiresAreDifferent: They suck spinal fluid, not blood. And they go clubbing!
* OutOfOrder: "Unearthed", which aired during the run of Season 2, was clearly supposed to be a Season 1 episode, as [[spoiler:Charlie Francis is still alive, which caused many fans to pause the episode and stare blankly at the screen for a few moments wondering what had happened]].
* PayEvilUntoEvil: In "The Bishop Revival", when Walter discovers the killer is perverting his father's research and attempting to eliminate all those not of the "Master-race", he reprogams the killer's toxin to instead target ''them'' instead.
* PeggySue: In [[spoiler:"White Tulip," the MonsterOfTheWeek is a scientist who is attempting this to bring back his fiancee, who died in a car accident several months prior]]. A [[PoweredByAForsakenChild vast]] {{deconstruction}}, of course.
* PeoplePuppets: In "Of Human Action", [[spoiler:Tyler Carson]] has this power. He uses it brutally, forcing a policewoman to kill herself and her fellow officers, and has a man cut his own fingers off for trying to escape. Trying to resist causes lesions on your brain, but he can be incapacitated for a very short time with a special device that blanks his brainwaves.
* PensieveFlashback: Olivia going into the tank to view John Scott's memories. [[PlayingWithATrope Played with]] in that John is able to interact with Olivia (even though Walter says this is not possible).
* PermaStubble: Peter.
* PersonalEffectsReveal: [[spoiler:Fauxlivia goes through Lincoln Lee's locker and finds two pictures of the two of them together.]]
* PetTheDog: The ordinarily stoic and humorless Broyles has a moment at the beginning and ending of "Earthling."
** [[BitchInSheepsClothing Fauxlivia]] has one of these moments every time [[spoiler: she's with her son.]]
* PhoneTraceRace: Done in "Stowaway" in a failed effort to track a DeathSeeker on a train with a bomb.
* PlanningWithProps: Walter explains to Broyles how he intends to attenuate the fringe disturbances caused by the two doomsday machines by using a glass pane, magnets and iron filings.
* PlayingWithFire:
** "The Road Not Taken" is about a woman who [[CursedWithAwesome has acquired pyrokinetic powers]].
** [[spoiler:And according to Walter, at one point Olivia got scared during the experiments done to her as a child and "started a fire with her mind."]]
* PlayingWithSyringes: The entire series runs on this trope.
* PlotRelevantAgeUp: [[spoiler:Fauxlivia gets pregnant with Peter's child, but is found to have a genetic condition that will likely kill them both upon birth. So Walternate arranges for the pregnancy to be accelerated, beating the disease to the punch.]]
* PointlessDoomsdayDevice: [[spoiler:Destroying the parallel universe with the Machine actually makes things worse in the surviving universe, leading to a BadFuture.]]
* PopculturalOsmosisFailure: Olivia doesn't get Peter's reference to [[{{Ghostbusters}} "crossing the streams"]].
* PortManteau: Since the introduction of the alternate universe, there have been many, many examples of Portmanteau, in-universe ("Walternate") and out. The winner of most portmanteaus? Easily the two Olivias. Over there Olivia? Altlivia, Nolivia, Bolivia, Fauxlivia, Holivia, Theirlivia, Otherlivia. This universe's Olivia? A-livia, Ourlivia. And then there is Bellivia, for when [[spoiler:Bell is possessing Olivia]] However, the best portmanteau of the series isn't a name, but a concept introduced by our Dr. Walter Bishop - ''vagenda'' (See above Getting Crap Past the Radar)
* PortalCut: The manner in which [[spoiler:Mr. Jones]] dies. As well, this is how Nina loses her arm.
* PoweredByAForsakenChild: [[spoiler:TimeTravel, in "White Tulip". The very act of going back towards the past instantly drains all batteries and [[HumanResources kills anything and anyone]] in the immediate vicinity.]]
* PowerPerversionPotential: When the Cortexaphan test subjects gain control over their powers, they naturally start using them to enhance their sex lives. [[spoiler: [[DeconstructedTrope This overuse of their powers causes one them to start reverting back to his previous out-of-control state when they cross over into the parallel universe. And only because he's dating one of the others. So he uses his empathic abilities to enhance their sex life.]]]]
* PowerStrainBlackout: [[spoiler: Olivia on occasion.]]
* {{Precursors}}:
** Walternate's DoomsdayDevice is described as ancient, and according to the trailer for 6955 kHz, the titular signal is millions of years old.
** [[SubvertedTrope subverted]] [[spoiler: in the season 3 finale, which explained things with a StableTimeLoop. Although this only presents more questions because neither universe actually has the technology to build the machines for themselves, just put the pieces together. So while the message and the buried pieces now make sense, where did the machine come from originally ? ]].
*** [[spoiler: It's subtly hinted and theorized by WildMassGuessing that the doomsday device was actually created and put in place by the Observers, since the strange language is exactly like theirs. Walter just assumed in a hurry he somehow created the device. It seems to be part of the very elaborate time-manipulation plan to ensure the Observer invasion in the last season's plot.]]
* PreemptiveDeclaration: From S4/E9 "Enemy of my Enemy", An agent of [[spoiler: David Robert Jones]] is a doctor in an Emergency Room. She calls up Fringe Division, asks them to listen closely, and walks out the ER (leaving a canister behind her):
-->'''Orderly'''(to the exiting Dr. Samuels): Doctor Samuels, do you want me to give that little girl with the bike injury a Tetanus?
-->'''Dr. Samuels''': Not necessary. I don't think she's gonna make it. ''(Orderly gives her a confused look as the canister begins to release a gas that kills everyone in the ER)''
* PrettyLittleHeadshots
* ProductPlacement: The season 2 finale features our heroes chowing down on KFC and snacking on Twizzlers. Incidentally, Walter knows the eleven secret ingredients. And he has for over thirty years.
** Rather blatant placement for Ford products show up in a few episodes, but not to a level of egregiousness.
** Sprint has had rather subtle product placement throughout the series, until the first part of the finale for Season 4. A man conspicuously uses a Sprint phone to pay for his coffee, and afterward, Walter makes a [[IdiotBall particularly dumb]] suggestion that it had something to the man ''burning to death from the inside out'' and Astrid tells him 'it's how people pay for things now'.
** Season 3 takes place in both universes. The alternate universe is technologically much much more advanced than ours - yet in both universes Windows 7 is state of the art and widely used.
*** But then of course we now know that Windows 8's desktop mode looks exactly the same as Windows 7 (as do many other elements) and that it'll be the dominating OS for a good decade or so.
* PsychicLink:
** The pilot features a link between Agent Dunham and John Scott in order to find a missing, unidentified suspect. The drug cocktail used to "open her consciousness" involves ketamine and lysergic acid, also known as LSD. Which [[spoiler:leads to John Scott's thoughts being uploaded into Olivia]].
** Also happens in "Bad Dreams". [[spoiler: Olivia shares a mental link to her partner from Walter and William's experiments - an emotionally disturbed man who has the ability to control people by transplanting said emotions into them.]]
* PsychicNosebleed: [[spoiler: Happens to Peter as a result of the DoomsdayDevice activating.]]
** As a general rule, nosebleed in Fringe equals ''really bad''.
** Inverted in the season 5 premiere: Walter is on the receiving end of a psychic torture and he is the one getting a nosebleed...and a mouth-bleed...[[EyeScream and an eye-bleed.]]
** Played straight in "Liberty." Windmark turns his power on Michael - only to start suffering the same effects as Walter when he was hit with this. Even the eye-bleed.
* PsychoStrings:
** [[spoiler: William Bell]] gets these in his introduction in Season 4 to let us know that [[AmbiguouslyEvil he might not be the man he was in the other timeline.]]
** [[spoiler:Peter]] got this when he teleported behind an [[spoiler: Observer]] and [[NeckSnap snapped his neck.]]
* PuttingOnTheReich: The uniforms of the [[StateSec non-Fringe Division police officers]] in [[spoiler: ''Letters Of Transit'']] resemble [[PeoplesRepublicOfTyranny Chinese and North Korean]] uniforms rather than that of the Nazis though.
[[/folder]]

[[folder:Tropes R-Z]]
* RealLifeWritesThePlot:[[spoiler:The animated segments inside Olivia's mind in "Lysergic Acid Diethylamide" were necessary because Leonard Nimoy could only provide his voice, rather than a full performance, since he's now (mostly) retired from acting and wasn't available.]]
* TheReasonYouSuckSpeech: In Season 5 Nina Sharp delivers an epic one to Windmark [[spoiler: concerning their technology-assisted evolution and how it has not only enhanced their intelligence but also their most primal instincts, and how they are no different than the millions of years-old lizard. "''You'' are the animal."]]
* ReplacementGoldfish: [[spoiler:After Peter died at seven, Walter stole the Peter from the alternate universe. Walter had originally planned to cross over to cure the other Peter of the genetic disease that previously killed his own Peter. When the vial of medicine broke, he took Peter back to his dimension, fully intending to return him once he was cured. After his wife saw the other Peter, Walter realized he couldn't bring himself to let go of him a second time.]]
** [[spoiler:After Olivia gets her prime timeline memories restored and falls in love with Peter (again), and the alternate universe Lincoln is killed in the line of duty, Fauxlivia and the prime universe Lincoln become ReplacementGoldfish to each other.]]
* RedShirt: Police officers and non-Fringe division FBI agents are frequently killed off by the MonsterOfTheWeek.
** Examples include:
*** "The Cure" (1x6) [[spoiler: Cop has [[YourHeadASplode his brain exploded]] by a woman who has been turned radioactive]]
*** "Ability" (1x14) [[spoiler: A newly introduced FBI agent falls victim to a [[AndIMustScream a chemical that seals your orifices shut]]]]
*** "Night of Desirable Objects" (2x2) [[spoiler: Sheriff gets eaten by mutant child]]
*** "Fracture" (2x3) [[spoiler: Cop has been dosed with [[AppliedPhlebotinum a chemical]] for years, crystalizes and [[WhyAmITicking explodes]]]]
*** and 'especially' "Of Human Action" (2x7): [[spoiler: a cop is [[PsychicAssistedSuicide mind controlled to jump off a roof]] then another cop is forced to shoot two of her colleagues before [[PsychicAssistedSuicide turning the gun on herself]]]]
*** "Alone in the World" (4x3) [[spoiler: FBI agent killed by the fungus.]]
*** "And Those We Left Behind" (4x6) [[spoiler: FBI agent gets trapped and vaporized in the time bubble.]]
*** Loyalists, in Season 5.
* ResearchInc: Massive Dynamic and a few others.
* RetGone:
** [[spoiler:Peter, as of "The Day We Died". He got better as of "Subject 9". His son didn't.]]
** [[spoiler:The Observers.]]
* ReducedToRatburgers: The bald boy found in the tunnel from "Inner Child" is assumed to have lived off rats, bugs, and moss.
* {{Retraux}}:
** [[http://www.youtube.com/watch?v=qSj2qD8waa0 The opening of "Peter"]], is made to look as if it was made in the 80's. As well, the floating text from flashbacks to 1985 is in a different font.
** They compare 80's fringe science to modern fringe science - all of it [[ItWillNeverCatchOn seemed absurd]], but some of it actually came to pass, while [[ThisIsGoingToBeHuge the rest just turned out to be bunk]]. The implication is pretty obvious: yeah, a lot of it is crazy, but the good stuff will change everything!
* RetroUniverse: Walter's fairy tale world in "Brown Betty." The cars are old, men wear fedoras, and yet everyone ''still'' carries a cell phone.
* ReturnToShooter: [[spoiler: Olivia does this to Jessica when she tries to kill September.]]
* TheReveal:
** Last bit of the season 1 finale, when the camera pulls around to reveal [[spoiler:that it's Peter Bishop's grave. The dates? 1978-1985]].
** Closing shot of the season 1 finale, when the camera pulls around to reveal [[spoiler:that Olivia and William Bell are meeting in the still-standing Twin Towers.]]
** The last part of "A New Day in the Old Town", when we learn that [[spoiler:Charlie has been killed and replaced by the shape-changing soldier from another universe.]]
** As of "Over There" part 1, we now know that [[spoiler: Walternate is the parallel universe's Secretary of Defense.]]
** The ending scene of the season 2 finale, where we see [[spoiler:Olivia going to communicate with her superiors via typewriter, and the real Olivia being held captive on the other side]].
** End of "The Last Sam Weiss," where we see tha Peter is at a 9/11 memorial - installed 10 years in the future.
** End of "The Day We Died," where the Observers casually inform us that [[spoiler: Peter no longer exists.]]
* ReversePolarity: In 3.06:
-->'''Walter:''' Dammit! Why can't I get a current?\\
'''Astrid:''' Maybe you reversed the poles?
--> And in the series final, [[spoiler: it's apparently part of the time-machine's function.]]
* TheRevolutionWillNotBeCivilized: The Resistance in Season 5, big time. Their typical methodology when they capture collaborators is to torture them with a device that ages them extremely rapidly and painfully, pump them for all the information they can get, and then kill them. Etta considers this perfectly normal.
* RomanceOnTheSet: Anna Torv married Mark Valley, who played her partner and lover in the pilot, but they separated after a year.
* RoomFullOfCrazy: Seen on several occasions. Walter's lab may also qualify.
** [[spoiler:Peter turns Etta's appartment into this after inserting the Observer tech into is brain.]]
* RuleOfCool: Are half the things that occur on Fringe even remotely plausibly? [[YouFailBiologyForever Not by]] [[YouFailPhysicsForever a longshot.]] Are they awesome? ''Hell yes.''
** Walter explicitly invokes the RuleOfCool to explain himself in the series finale.
-->'''Walter:''' Anti-gravity Osmium bullets. Shoot [[spoiler: Observer]]s with these and watch them float away like balloons. \\
'''Peter:''' If we shoot them, they're dead. Why do we want them to float away? \\
'''Walter:''' Because it's cool!
* RunningGag: Peter "maybe knowing a guy" who can do this or that faster than the FBI could.
** Also, Walter getting Astrid's name wrong.
** Charlante: "THEY'RE NOT WORMS!"
** The image cutting to a pan of the [[MegaCorp Massive Dynamic]] HQ after someone says that they need information, technology, or that they've found a link to someone important. It might as well be a recurring gag given how [[OnceAnEpisode often it happens]].
** People entering Walter's lab for the first time, frequently questioning why there's a ''cow'' in the corner?
** When Walter meets a victim-of-the-week, he often mentions that the circumstances of death bring to mind two things. The first is an insight into how the person was killed, and the second is a particular snack Walter is craving.
* SaveBothWorlds
* SacrificialLion:
** [[spoiler:[[EnsembleDarkhorse Charlie. Full Stop.]]]]
** [[spoiler: Red!Universe Lincoln Lee.]]
** [[spoiler:Etta Bishop.]] That's when we realise how ''dangerous'' Windmark is.
** [[spoiler:Nina Sharp.]]
* ScienceIsBad: Sort of. According to the creators the entire ethos of the show is that scientists haven't had any sense of their own purpose since the space race ended and that's bound to cause all kinds of problems.
* SerialEscalation: Part of the second season premiere.
* SchizoTech: The alternate universe has modern cell phones by 1985, but still uses zeppelins. Tablet computers are so widespread that paper is obsolete, but they haven't cured smallpox.
** "Brown Betty" cranks this UpToEleven. It's ''supposed'' to come off as an old-school 1950's FilmNoir musical, but alas, we have laser pens, cellphones, and laptops. ...The cellphones are touch-pad PDA's which are absurdly huge and look like giant slabs of metal, and the ''laptops are built out of wood''.
* SecretTest: The Observer's ultimate goal in "Firefly". Нe wanted to know if [[spoiler:Walter is ready to sacrifice Peter.]]
* SetRightWhatOnceWentWrong:
** In S2-E16, "Peter", one of the Observers wanders through Walternate's lab and distracts him so [[spoiler:he doesn't notice that the cure for Peter's disease is actually workable. Oops. He gets a polite dressing-down from his fellow Observers, and makes up for screwing the pooch by saving Peter's life (and Walter's) when they fall through the ice.]]
** "White Tulip" [[spoiler:Pretty much the entire plot]].
** [[spoiler:The season 3 finale.]]
* ShapeshifterBaggage: People undergoing [[BodyHorror horrific transformations]] often put on large amounts of biomass from nowhere.
* SheCleansUpNicely: Olivia puts on a cocktail dress to inflitrate a black-tie fundraiser.
* SheFu: Impressively averted with [[ActionGirl Olivia]]. While she usually favors taking the bad guys down with a few well-placed bullets, the times she does get into a fistfight she both takes and dishes out pretty convincing punches. [[JustifiedTrope Of course]], she is a former [[SemperFi Marine]] and fancy backflips would not be in her combat repertoire.
* ShipperOnDeck: Walter, for Peter & Olivia: "Do you two want to use the room?" Lately he's wondered aloud if his son and Olivia got married she would call him "Dad".
** Oh, Walter is just a giant ball of mischief when it comes to shipping Peter and Olivia. "Of course, condoms are never 100 per cent effective (pause) You two should be aware of that." and [[spoiler:shortly after Olivia has been temporarily abducted]] we have:
-->''''Walter''': Peter was really worried about you when you were gone.\\
'''Peter''': Walter...\\
'''Walter''': You were.\\
'''Peter''': Well, of course I was worried.\\
'''Walter''': He was *really* worried.
** ... later in the same episode ...
-->'''Walter''': I was worried, too, when you were taken.\\
'''Olivia''': Thank you, Walter. (she walks away)\\
'''Walter''': (after a pause) Not as much as him, of course.\\
'''Peter''': Walter....\\
'''Walter''': It's true.
** In "''Jacksonville''", when Peter tells him that he's about to go on a "[[SuspiciouslySpecificDenial not-date]]" with Olivia, we see Walter do a happy little jig at the news.
** Nina Sharp is a pretty avid Peter and Olivia shipper. For good reason. Shipping is ''really'' SeriousBusiness where those two are concerned.
*** In Season 4, Nina is less of a shipper [[spoiler:considering that if Olivia remembers Peter, she forgets that Nina was her surrogate mother.]] [[IWantMyBelovedToBeHappy She doesn't stop this from happening]] but she is a little cold towards Peter.
** September also ships Peter and Olivia. [[spoiler: To the point of defying the other Observers.]]
** Astrid tries to set up Olivia and Lincoln in Season 4.
** In a really weird turn of events, ''[[spoiler: Peter]]'' seems to ship Lincoln and Olivia from the amber timeline. [[IWantMyBelovedToBeHappy He even buys Lincoln a pair of hip glasses to woo her with.]] [[spoiler: And then Peter realises that amber!Olivia is ''his'' Olivia and the [[AbandonShip shipping stops dead.]]]] Alternate universes, altered time lines and upcoming apocalypses sure make ''hysterical'' [[LoveTriangle Love Triangles]].
** Phillip Broyles [[spoiler:carried around a photograph of Peter and Olivia for ''twenty one years''.]]
* ShooOutTheNewGuy: Anyone else remember Amy Jessup? Nope, well you're not alone. For the star of season 2 there was an announcement of a new member joining Fringe Division who saw a possible religious/supernatural connection to the Pattern. She ended up being in only two episodes.
* ShootTheFueltank: Olivia does this in the Season 3 premier. From a moving taxi. Henry Higgins, the taxi driver, is suitably impressed.
* ShoutOut: See [[ShoutOut/{{Fringe}} here]].
* ShownTheirWork: In "Everything In Its Right Place" alternate-universe Fringe Division uses ''textbook'' military suppression tactics. Which makes sense, as they have more of a military bent than the standard version.
* SignedUpForTheDental: Discussed.
-->'''Peter:''' Ever considered a life of crime?
-->'''Olivia:''' No dental.
* SinisterGeometry: Massive Dynamic's [[http://artect.net/wp-content/uploads/2008/09/fringe_massivedynamic03.jpg interior decorator must be an interesting guy]].
** That's the interior of the Royal Ontario Museum's Michael Lee-Chin Crystal, the inside actually do look like that.
* SlapSlapKiss:
** Nina and Broyles in the first two Seasons. They fluctuate between working together happily, Broyles refusing to trust her, being ''very'' affectionate and an outright screaming match at the end of Season 2.
* SmugSnake: Sanford Harris.
* SoundtrackDissonance: The Marionette.
* SpecialEditionTitle: Fringe loves to change its opening sequence; for starters, the list of "fringe topics" that [[http://www.youtube.com/watch?v=Ijjlxqy2zzc appear]] [[http://www.youtube.com/watch?v=OoV5Lw3QVpQ changes]] [[http://www.youtube.com/watch?v=NA9thbhro-M every]] [[http://www.youtube.com/watch?v=zsKgTLd7RoQ season]] as well as for certain special episodes, all listed on the Quotes page. The [[http://www.youtube.com/watch?v=fM1bzVVrgNk style also changes]] depending on the episode:
** First and most dramatically, episodes "Peter" and "Subject 13" were set in the 80s. [[http://www.youtube.com/watch?v=reaIcN61M-M&hd=1 The opening replaced]] some of the modern "fringe" science subjects with now-commonplace sciences such as DNA profiling and in vitro fertilisation. It was also set to an 80s-sounding version of the theme and similarly retro graphics, and a slightly grainy effect as if recorded on VHS tape.
** A [[http://www.youtube.com/watch?v=LzdHu_cCZIA red color scheme]] is used for opening credits of episodes taking place in the parallel universe, instead of the usual blue. The season 2 fringe topic "parallel universes" was replaced by "first people" in those episodes.
** The opening of [[http://www.youtube.com/watch?v=7FYz3wK9MLc season 3 episode "Entrada"]] alternates between red and blue, since it shares time about equally in both universes.
** A [[http://www.youtube.com/watch?v=kqTuX7cIqDU grey color scheme]] was used for the season 3 episode "The Day We Died" (set [[spoiler:in [[BadFuture 2026]]]]) and featured even more advanced fringe sciences, such as dual maternity and thought extraction. Ominously, [[OhCrap "water"]] and "hope" are also listed as fringe topics.
** An [[http://www.youtube.com/watch?v=zsKgTLd7RoQ amber color scheme]] is used for season 4 episodes taking place [[spoiler:after the two universes have partly joined, and the timeline in both has been altered by Peter's death as a child]].
** The season 4 episode "Letters of Transit" (set [[spoiler:in [[BadFuture 2036]]]]) [[http://www.youtube.com/watch?v=Rk3rX-9qLrY&feature=related goes a different route with its code-words.]] [[OhCrap None of them are science-related but instead cover concepts like "community," "joy," and "free will."]] The graphics symbolically depict future-Earth [[spoiler: as a prison planet run by the Observers]]. Season 5 uses this intro for all episodes.
* SpockSpeak: All of the Observers. Also, [[spoiler:Peter, when he turned himself into an Observer.]]
* SpontaneousHumanCombustion:
** A Season One episode explored this. People who were used in experiments involving Pyrokinesis would burst into flames and explode if they couldn't focus their attention on other things around them when their power builds up inside of them.
** Later, in Season Four, a fringe incident is initially believed to involve several people spontaneously combusting after their bodies exerted too much energy (with others in the affected area needing to stand perfectly still to avoid meeting the same fate), but it is revealed to have been spurned by nanotechnology entering the affected persons' bloodstream.
* SpreadingDisasterMapGraphic: In a ShoutOut to ''Pandemic'' where there is a map showing a deadly infectious disease having spread [[MemeticMutation everywhere but Madagascar]].
* SpySpeak: Where does the [[MagnificentBastard Gentleman]] live? Little Hill.
* StableTimeLoop: [[spoiler:This is how the third season finale explains the First People and the origin of the Machine]].
*** [[spoiler: Not exactly a "stable" time loop, since it changes every iteration. It's also hinted the Observers were behind it all to manipulate the timeline to allow their invasion.]]
** Implied in White Tulip. [[spoiler: Arlette would have safely driven to safety if she had not been so shocked by the presence of Future!Alistair.]]
* StandardCopBackstory: Olivia lost both parents at a young age, was abused by her stepfather, feels responsible for her younger sister, and doesn't have any stable relationships, romantic or not, with people who aren't related to and don't work with her.
* StarCrossedLovers: How one of the Australian promos described [[spoiler: Peter and Olivia.]] If the trope is subverted or not remains to be seen.
* StarfishLanguage: Astrid analyzes the Observers' code writing and points out that unlike every known written language in the world, which are all based on symbolic recognition, all the Observer symbols are unique,and none of them repeat. They also have multiple meanings related to the Observers' non-linear perception of time. Astrid is an expert in decryption and languages, and seems to be the only unaltered person capable of decoding the Observer symbols (although it's possible that Walter learned to do it but later forgot).
* StaringKid: So very much. You could actually make a drinking game out of this if you watched only the teasers.
* StartOfDarkness: [[spoiler: Walternate's crusade to take back his son begins when Young Olivia accidentally crosses over into his office and tells him where Peter is.]]
* StalkerWithACrush: [[spoiler:One of the Observers.]]
* AStormIsComing: spoken word for word by [[spoiler:William Bell, in reference to the prospect of a potentially cataclysmic collision of the two universes. ]]
* StrappedToAnOperatingTable: Olivia is abducted and strapped down by [[spoiler: the ZFT]] in Season 1; she is later strapped down again in Season 3 and almost de-brainified by Alt-Brandon once the Secretary decided she [[YouHaveOutlivedYourUsefulness Had Outlived Her Usefulness]].
* StupidJetpackHitler: Walter's father worked for the Nazis while spying for Americans. [[spoiler:One of those Nazis is still young and using that science in 2010.]]
* StylisticSuck: "Subject 13" took the WholeEpisodeFlashback concept further than normal and made even the HD broadcast look like it was shot on mid-80s hardware.
* SuspiciouslyAproposMusic: Walter listens to "The Man Who Sold The World" by David Bowie.
* SweetTooth: Walter.
* {{Synchronization}}: In the episode [[spoiler:Where a boy will die if they kill the alien fungus that has synchronized with him.]]
** In the fourth season episode "The Consultant," [[spoiler:David Robert Jones]] is experimenting with a device that causes accidents in one universe and kills the counterparts of any victims in the other world in the exact same way. Ever see someone die in a plane crash while in the middle of a business meeting? Not pretty.
* TakeMeToYourLeader: Said unironically by the heavy [[spoiler: in the episode "Enemy of my Enemy" in season 4.]]
* TakingYouWithMe: [[spoiler:Etta, after being shot at the end of "The Bullet That Saved The World," activates one of those [[BuffySpeak electro-zap-bombs]] that the Observers use to make entire buildings disappear. A significant number of Observers unwittingly follow her into oblivion. And yes, despite being a DyingMomentOfAwesome, it's still a TearJerker for anyone with a soul.]]
* TeamMom: Blue!Astrid has taken this role to the team
* TeamPet: Gene, the cow.
* TechnologyMarchesOn:
** After 17 years locked up in a mental institution, Walter is a bit behind the times. "Don't forget to check out his floppy disks!"
** Even before being committed, he apparently preferred to use dated technology in his everyday life, all the more surprising for a cutting-edge scientist. He has a typewriter ([[spoiler:which the ZFT manifesto was typed on]]) and his record collection is pre-CD. He also, for some reason, preferred Betamax cassettes to VHS and used an old TV from TheEighties to play them back.
* TeensAreMonsters: Tyler Carson, armed with the ability to make PeoplePuppets, goes off half-cocked on a wild hurricane of murder, theft, and increasingly delusional attempts at wish-fulfillment.
* TeleFrag: happens in "Jacksonville" (2x15) to an entire building when it(and the people inside) are merged with their AlternateUniverse counterparts.
* TeleportersAndTransporters: How David Robert Jones "[[Franchise/StarTrek Star Treks himself,]]" in Peter's words, out of a maximum security German prison. It had some unintended consequences for his physiology though. Getting disassembled and reassembled seems to have scrambled his molecules. In the original timeline, Peter kills him before it can be seen whether he would die from this or if his condition would improve. In the reset "Amber" timeline, where Peter died as a child, he successfully crossed over to the Alternate Universe through a portal similar to the one Walter used in the eighties, and seems to have recovered from the effects.
* TerrorAtMakeOutPoint: The episode "The Man From The Other Side" begins with two teens getting stoned in a car (presumably before or after making out) who quickly have their identities stolen by interdimensional shapeshifters.
* TimeSkip: Season 5 is set in the year 2036, in the future last seen in "Letters of Transit".
* ThroughHisStomach: Fauxlivia's ''modus operandi'' when dealling with Walter.
-->'''Walter:''' She bought my ignorance with baked goods while she carried out her plan to steal pieces of the machine with the — ''it was that damn Portuguese sweet bread!''
* TrappedInAnotherWorld:
** [[spoiler: Olivia at the end of Season 2.]]
** [[spoiler: Peter thinks this happened to him at the end of Season 3.]]
* TraumaSwing: Olivia contemplates her childhood in "Jacksonville".
* TheOmniscientCouncilOfVagueness: The Observers.
* TheReveal:
** "The Secretary" of the shadowy alternate universe organization is [[spoiler: Walternate]]. He's known as "The Secretary" because he's [[spoiler: the U.S. Secretary of Defense]].
** Donald is [[spoiler:September. With ''hair''.]]
* ThemedAliases: Though Peter hasn't used many aliases during the run of the show, he still knows enough to lampshade this trope.
-->'''Peter''': The best lie, the one that's easiest to remember with consistency, is the one that's based on the truth. Whenever I would do this, I would base it on my own last name. Bishop. So Peter King. Peter Knight.
* TheydCutYouUp: "Forced Perspective"
* ThoseWackyNazis: "The Bishop Revival."
* TimeTravel: "White Tulip" [[spoiler:and the final moments of "The Last Sam Weiss"]].
** The Observers are able to move through and outside of time. For a long time, their abilities, origins, and motives are a total mystery. They are eventually revealed [[spoiler: to be a scientific observation team of posthumans from one possible future. Why? As of "Letters in Transit" it's revealed that future earth has been destroyed, and they're looking to the past to find a better one]].
* TimeyWimeyBall: "White Tulip", again. Also, the plan in the final season [[spoiler:takes into account only two iterations of events rippling out: taking Michael into the future (somehow they're able to reach the original future, not the future created when the Observers went back to 2015) ripples forward and causes the Observers to not be created, or to be created differently, and then ripples back and causes the Observers to not invade 2015, but doesn't ripple forward again to the future where Michael's taken.]]
* TitleDrop: By Walter in "The Day We Died."
** Also, on the pilot, when Olivia tells Peter that his father worked on ''fringe'' science.
* TitleIn: Played with.
** Titles are presented as big, 3D letters hovering in the air during establishing shots.
** One establishing shot of a location in Iraq had the letters more or less aligned with the city's grid as US choppers flew over it. Then the angle changed so the camera was on the ground, and the letters are actually reversed, with the choppers in the air on the other side.
** Other times, they are reflected in nearby bodies of water.
** Raindrops have been seen splattering on contact with them.
** They cast shadows on occaision.
** When they title in action that occur in the '80s, they turn into the stereotypical old fashioned computer font.
** When titles are shown for the alternate universe Fringe team, they're the normal plain-text-on-screen style.
** In another episode, the big floating letters that spelled "Manhatan" with only one "T" were [[spoiler:a clue that a scene was, as later revealed, set in the AlternateUniverse]].
* TonightSomeoneDies: "The Day We Died". The producers hinted on that and also announced that they will introduce a rookie FBI agent. The promo for the episode featured a coffin. And it's also [[SpoilerTitle named]] "The Day We Died". In the middle of the episode [[spoiler: Olivia]] got shot by [[spoiler: Walternate]], but that's okay, because it was in the BadFuture. What really counts is that[[spoiler: Peter apparently got entirely erased from reality and only the Observers know that he existed at all.]] The rookie FBI agent turns out to be [[spoiler: [[AllGrownUp Future!Ella.]]]]
* TownWithADarkSecret: [[spoiler:Pretty much the entire plot of "Johari Window".]]
* TragicKeepsake:
** Olivia kept the ring John Scott [[spoiler: was going to propose to her with.]]
** Walter kept [[spoiler:his dead son's coin.]]
** The Bullet That Saved The World.
* TranquilFury: [[spoiler: David Robert Jones threatens Peter in an attempt to activate Olivia's abilities.]] [[DeathGlare She disapproves.]] Violently.
--> '''[[spoiler: Olivia:]]''' [[GoneHorriblyRight I'm doing what you wanted.]] [[ShockAndAwe I'm turning on the lights.]]
* {{Transhuman}}: Many examples, including the Cortexiphan kids, subjects of other experiments in human augmentation, and [[spoiler: the Observers]].
* TravelingAtTheSpeedOfPlot: The team can navigate the Boston-New York-Washington megapolis in a matter of moments.
** In ''The Consultant'', Colonel Broyles gets his "Show Me" card scanned at Liberty Island. After they get an alert about this, Bolivia and Agent Lee make it from Fringe HQ in Manhatan to Liberty Island in the time it takes Broyles to walk down the hallway.
* TriumphantReprise:
** "Funeral Pyre Straits" is played in Season 3 during [[spoiler: the BadFuture when Olivia is killed by Walternate.]] It's basically the worst case scenario. A louder, triumphant version is played in Season 4 when Olivia saves Peter in a particularly [[PeoplePuppets creative]] way.
** Fauxlivia's theme was played as a dark string piece when Fauxlivia was [[BedTrick up to no good]] and as a sad piano piece when [[spoiler: Lincoln Lee died]]. More upbeat versions are also played when [[spoiler: Henry is born in "Bloodline" and when Olivia and Fauxlivia part on good terms in "Worlds Apart".]]
* TwentyMinutesIntoTheFuture: The look and feel of the Alternate Universe has shades of this but, as mentioned above, the show is more of a NextSundayAD setting.
** At the end of ''The Last Sam Weiss'' [[spoiler: Peter finds himself in a devastated New York City street and comes across a memorial plaque dated 2021 out the front of [[http://en.wikipedia.org/wiki/One_World_Trade_Center Freedom Tower]]]].
** ''Letters in Transit'' takes place in [[spoiler: 2036, in a world conquered by Observers]].
* TykeBomb: [[spoiler:Walter and William Bell experimented on several children. One of which was Olivia.]]
* UglyGuyHotWife: The episode "Midnight" had such a combo with the revelation that the defected scientist from ZFT[[spoiler:'s wife has been infected by ZFT and is the MonsterOfTheWeek. A twist that many won't see coming due to the scientist being a short balding middle aged man and his wife, seen earlier in the episode being rather gorgeous with a real FemmeFatale look.]]
* UnflinchingWalk: Walter in "Letters of Transit". [[spoiler: Walter makes a bomb in the old Massive Dynamic building using antimatter to leave behind for the Observer and Loyalists following them. Walter, Etta and Simon leave the building, and the building dissolves. Etta and Simon look back at the building and at what is happening, but Walter doesn't even flinch.]]
* {{Unobtainium}}: Amphilicite.
* UnresolvedSexualTension: Peter and Olivia. In the beginning, it was simple, and it was obvious that there was some attraction.
** Then came Fauxlivia, [[spoiler:with whom Peter thought it was resolved.]]
** As of 6B: [[spoiler:RESOLVED!]]
* UnusualEyebrows: The Observers don't have eyebrows at all.
* UpgradeArtifact: The Observer tech. [[spoiler:Which Peter shoves into his spinal cord.]]
* VanHelsingHateCrime: In "Reciprocity", the team investigate someone who has been hunting identified Shapeshifters, leaving them with two bullets in the head and their data storage devices removed. [[spoiler: It was Peter]].
* VehicleVanish: The Observer does this.
* ViewerFriendlyInterface: Averted in "Transilience Thought Unifier Model-11" - the carbon monoxide tower's graphic display readout is written in the bizarre characters of the Observer language, but it can still convey clearly that a system malfunction is in progress.
* VikingFuneral: [[spoiler: Olivia]] in "The Day We Died".
* VillainsActHeroesReact: Peter disapproves of this trope.
* ViralMarketing: In Creator/JJAbrams fashion. Massive Dynamic [[http://massivedynamic.com/index.php has their own website]].
* VirtualGhost: [[spoiler: William Bell attempts this. He's knows it won't work.]]
* TheVirus: "What Lies Below"(2x13)
* VomitIndiscretionShot
** Flight 627. What happened to the passengers [[spoiler:and John Scott]] is ''not'' pretty.
** The shot of [[spoiler:Charlie Francis]]'s belly crawling with maggots under the skin.
** [[spoiler:David Robert Jones getting cut in half due to Peter abruptly closing the dimensional portal.]]
** "Immortality" gives us the delight of watching insects burrow their way out of live people.
* WackyParentSeriousChild: Walter and Peter, the latter being more the [[DeadpanSnarker snarky]] type rather than the responsible one.
* WeaksauceWeakness: The cure for malevolent hell Ebola from 75,000 years ago... is [[spoiler:HORSERADISH?]]
* WeHaveToGetTheBulletOut: Justified in the Season 4 final. [[spoiler:Olivia has been ''shot in the head'' and if they get the bullet out in time, the cortexiphan can repair the damage.]]
* WeirdnessMagnet {{Lampshaded}}: When pressed by Olivia about [[MegaCorp Massive Dynamics']] suspicious tendency to be involved in Pattern cases, Nina counters by noting the oddity that the cases also seem to be clustered in the taskforce's backyard. Explained in the season one finale as being caused by "soft spots," which cause weird events to radiate out from them. These soft spots are apparently caused by the advancement of science and technology.
* WellDoneSonGuy: [[spoiler:Turns out Jones saw Bell as a mentor, and is doing all the crazy stuff to impress him.]]
* WellIntentionedExtremist:
** The Alternate Fringe Division sees the deaths of at least 10,000 people (themselves included) acceptable losses in order to quarantine the dimensional tears. Furthermore, it's believed that only one of the two dimensions can survive the upcoming cataclysm, so unless someone figures out a way to SaveBothWorlds, pretty much any atrocity inflicted on the opposing side is arguably justifiable.
** According to [[spoiler: Gale the loyalist, the resistance is this. He was lying about his dead son but considering Etta was torturing him, he may not have been exaggerating all that much.]]
* WesternTerrorists: [=ZFT=].
* WeDidntStartTheBillyJoelParodies: The episode "The Road Not Taken" [[http://davidwumusic.com/fringemunks/Epis_1-19.mp3 got one]] ([[http://davidwumusic.com/fringemunks/lyrics_season1.html#1.19 lyrics]]). ("Susan Pratt started the fire / It wasn't God nor Jesus / It was pyrokinesis")
* WeWait: Said in the first episode when Olivia is in the isolation tank.
* WhamEpisode:
** "There's More Than One of Everything"(1x20). [[spoiler:William Bell lives in an alternate universe where the Twin Towers never fell, Jones sees Bell as a father figure, and, oh yes, Peter died before he turned ten and the one we know was kidnapped by Walter from an alternate universe.]]
** "Momentum Deferred"(2x04) follows up with more revelations from [[spoiler:Bell]] along with setting up the rest of the season [[spoiler: including the introduction of a new villain]].
** For a while, Fringe lacked a true wham episode since the plot attempting to travel to the other universe built slowly. Then we got the season two finale "Over There" [[spoiler:where the Fringe team finally crosses over to rescue Peter, who we find out is linked to a very evil looking machine. Oh and there was an Olivia switcheroo.]]
** This was quickly followed by "Olivia" (3x01) where [[spoiler:Ourlivia became brainwashed into thinking she was Fauxlivia, while Fauxlivia is now in a relationship with Peter.]]
** Entrada (3x08) wrapped up what felt like a season's worth of plot in one action-packed episode.
** "Lysergic Acid Diethylamide" (3x19): has an ending that shoves it very firmly into Wham territory.
** "6:02 AM EST" (3x20): Walternate [[spoiler:turns on the DoomsdayDevice]]. Sam Weiss [[spoiler:understands exactly what's going on and is gonna do something about it]]. Fringe events [[spoiler:are starting to rip the prime universe apart in earnest]]. Peter [[spoiler:can't use the machine]]. Fauxlivia [[spoiler:betrays Walternate and gets thrown in solitary]]. Walter [[spoiler:cooks naked on Tuesday mornings]]. [[TemptingFate It doesn't get much whammier than this...]] [[color:white:[[note]]Unless George Michael showed up...[[/note]]]]
** "The Last Sam Weiss" (3x21): Olivia [[spoiler: is critical to getting Peter in the doomsday machine]]. Peter wakes up [[spoiler: 15 years into an apocalyptic future]].
** "The Day We Died" (3x22): [[spoiler: Peter fuses part of Earth-1 and Earth-2. Walter, Olivia, Walternate and Fauxlivia decide to work together to keep the world from ending. [[RetGone Peter never existed]].]] For those of you keeping track, the final four Season 3 episodes are all listed here.
** ''Back To Where You've Never Been.'' [[spoiler: Walternate isn't responsible for the new shapeshifters. ''David Robert Jones'' is. Alternate Broyles is most likely a shapeshifter and is working for them. Oh... and September was shot and informed Olivia that in every one of the possible futures, she will die.]] The promo said that the episode would explain everything. [[TrailersAlwaysLie THEY LIED.]]
** Brave New World, part 1. [[spoiler: Olivia can now use mind control. William Bell is behind everything. David Robert Jones is dead. Astrid has been shot and Walter is at Bell's mercy.]]
** "The Bullet That Saved The World". [[spoiler: Etta's death.]]
*** "An Origin Story" and "Through the Looking Glass and What Walter Saw There" give us the consequences of this. [[spoiler: Observer!Peter.]]
** "Anomaly XB-6783746". Oh boy, so much. [[spoiler: Nina kills herself to protect the team and Michael, and Donald is revealed to be September.]]
* WhamLine: A strange one since it is not spoken but written on a plaque: [[spoiler: Dedicated to their memory - September 11, 2021]].
** Similar example: Peter Bishop, [[spoiler: 1978-1985]].
** "The FBI ceased to exist over a decade ago."
** Also, [[spoiler: "I don't know, but I think he's the man who's going to kill me"]], spoken [[DissonantSerenity almost cheerfully]] by [[spoiler: Olivia]] with regards to the man with the X T-shirt.
** "They don't remember him." "Of course not. [[spoiler: He never existed.]]"
** "It is the same - " *collapses*
** An early one from the Pilot, when Olivia is listening to a tape of her suspect being threatened:
-->'''Richard:''' You're threatening me? After seeing what I'm willing to do to my own brother?\\
'''[[spoiler: [[TheMole John Scott]]]]''': [[CallBack Well let me assure you, we'd be happy to treat you as family too.]]
** "You are nothing but tech! I would be ten times what you are if I had that tech in my head!"
** "I know who Donald is. [[spoiler:Donald is September]]."
* WhatDoYouMeanItsNotSymbolic -- The {{Eye Catch}}es show a peculiarly changed item, such as a cross-section of an apple with fetuses (feti?) as the seeds, or a frog with the Greek letter Phi, or Φ, printed on it, along with a point of light. TheOtherWiki says Phi is used as a symbol for several interesting subjects, such as electric or magnetic flux in physics, a shorthand representation for an aromatic functional group in organic chemistry (which relates directly to the pilot episode), and a sentence in first-order logic.
** Not to mention the number (1.618...) represented by Phi, and, by extension, the Golden Ratio, although the Golden Ratio is usually denoted by the lowercase version of Phi (φ). Still, it's relation to science and nature fits right in with the theme of the show.
* WhatHappenedToTheMouse:
** Season 1 hinted at Peter's connections to the Boston mob several times. After a mobster had been informed about Peter being back in town at the end of "The Dreamscape", the sub-plot has apparently been dropped entirely.
** Agent Amy Jessup, after appearing in two episodes of season 2 and investigating a possible connection between The Pattern and biblical prophecies, disappeared from the show without an explanation. Maybe the producers realized that the general fan reaction was not favorable. Putting her storyline into the AbortedArc pile.
** Season 1's main bad guy organization, ZFT, appears to have vanished entirely after the death of its high-profile member David Robert Jones in the season 1 finale.
*** Although it is arguable that the whole point of ZFT was to ''activate'' Olivia and have her realise her talents so that she could eventually defend the universe. And having done that they could get back to regular crazy science instead of murdering people with science.
**** Apparently, without [[spoiler: Peter]] around, [[ChekhovsGun the mouse flourished and came back with a vengence]] at being stomped down in the [[spoiler: Peter]] version of the universe. Without him, there [[spoiler: David Robert Jones]] never dies, and Walter's rants at against God [[spoiler: about losing ''both'' versions of his son,]] inspires a dying William Bell to try to[[spoiler: '''kill all of humanity.''']]
** Although ZFT the book resurfaces in the Season 2 finale. In the other universe it's apparently a propaganda book written by Secretary of Defense [[spoiler:Walternate]].
*** A similar organization, also led by David Robert Jones and [[spoiler: William Bell]], is featured in Season 4, after the timeline reset caused by the Observer ''not'' preventing Peter's death. It's more a religious cult centered around transhumanism, with an internal conspiracy to [[spoiler: destroy both universes in order to create a new, designer-universe]].
** Peter's [[DealWithTheDevil deal with Nina Sharp]] in "The Cure" seems to have been forgotten.
*** Although this of course may yet show back up...
** What happened to Tyler?
** What happened to poor Canaan the Shapeshifter?
** If the "First People" were really just the future Fringe Team in the StableTimeLoop of "The Day We Died," why did they invent a whole new system of writing (alien-looking calligraphy) along with the advanced technology they sent back in time? Wouldn't it have been easier to use English, especially since the sketches that clued Peter, Walter, Olivia and Sam Weiss into the activation of the Vacuum/Wave Synch Machine had the English letters A, T, C and G to represent human DNA.
*** [[spoiler: It's hinted that the Wave Synch Machine was actually created by the Observers, and Walter just assumed he created it(It's also subtly hinted the Observers were created using technologies based on Walter and Massive Dynamic's research, after all). This was done in order to manipulate the timeline to allow their invasion.]]
** What happened to Rachel and Ella? They don't appear again after season 2, and are only mentioned once thereafter in season 4, and that was a reference to the Over There versions. Especially egregious in season 5 because one would think that Olivia, after being frozen in amber for 21 years, would at least be curious about what happened to her sister and her niece.
* WhatCouldHaveBeen: In-universe examples with the parallel universe, glimpsed in backgrounds and the like. Including:
** ''Film/BackToTheFuture'' starring Eric Stotlz (in a ShoutOut to the circumstances of TheOtherMarty)
** The West Wing season 11, complete with an Obama lookalike on [[http://i42.tinypic.com/4pv1np.png the poster]] and a slightly different logo ("the" is on the right hand side, not in the middle)
** Comic books such as [[GreenLantern The Red Lantern]] and ''The Death of [[Franchise/{{Superman}} Batman]] - see them [[http://www.comicbookmovie.com/fansites/BrentSprecher/news/?a=18404 here]]
** [[{{Cats}} Dogs]], now enjoying its 18th year on Broadway.
** Queen Diana is visiting the States apparently. Depressing both IRL and in-universe, since it suggests an early death for Queen Elizabeth II.
** Len Bias apparently having more than 20 great years with the Boston Celtics, and still being good enough to win the NBA MVP award in his 40s.
** President Kennedy is apparently still alive and was the UN Ambassador, until he is named as the head of a new ecological agency
* WhatIsThisThingYouCallLove: Played straight with September's line "I believe you call it love."
** August's dying confession to The Observer, revealing the reason why he repeatedly chose to interfere with Christine Hollis' life, despite it apparently being her destiny to die, because she made him actually ''feel'' something. Both his and the Observer's reaction suggest it's a completely alien concept to them.
--> '''August''': She crossed my mind... somehow? She never left it. I think... it's what they call... feelings? I think... I love her will she be safe now?
* WhatMeasureIsANonHuman: Raised in "Reciprocity" when Walter finds out that Peter [[spoiler: has been hunting and killing shapeshifters to get their memory storage devices.]]
** ''Do Shapeshifters Dream Of Electric Sheep?''
* WhatTheHellHero: Walter gets a lot of this. Particularly during season 2. And usually for good reason.
** "Marionette" has [[spoiler:Olivia chewing out Peter for not being able to recognize Fauxlivia was a fake. She even acknowledges that what she's feeling is emotional, not logical.]]
** The ending of "Through the Looking Glass and What Walter Found There" has Walter getting a major one of these from [[spoiler:''himself'']].
* WhenDimensionsCollide: A common theme of the series is the problems caused when physical laws bleed through between the two primary universes. Although the differences between the two universes seem to be largely immeasurable when you visit.
* WholePlotReference: Whether unintentional or a deliberate reference, the episode "White Tulip" (2x18) borrows heavily from the plot of [[RockOpera ''The Broken Bride'']] by the band Ludo: [[spoiler:a scientist creates a time travel device to go back in time to the day in May when his fiance/bride was killed in a car accident with the intention of saving her life. Minus about 14 years, pterodactyls, a dragon and a zombie apocalypse. It even ends with the time traveler realizing he cannot save his bride and getting in the car to die alongside her.]]
** As the title suggests, season four's [[WhamEpisode "Letters of Transit"]] follows the plot of ''Film/{{Casablanca}}'', recasting the Nazis as [[spoiler:the Observers]], Renault and the Vichy French as [[spoiler:Broyles and Fringe Division]], and Ilsa and Laszlo as [[spoiler:the original Fringe team]]. The kicker is that [[spoiler:it's the canonical BadFuture, and will be the setting of season five]].
* WhoYouGonnaCall:
** Well, yeah... it's a section of the FBI geared specifically towards the (un)conventionally inexplicable. Actually spoken by Walter Bishop in the episode "The Road Not Taken":
---> '''Peter:''' Well, if there's something strange in your neighborhood...\\
'''Walter:''' WhoYouGonnaCall? ''
** The alternate-universe Fringe Division even moreso, as it operates openly, has a larger budget, more personnel, and reports directly to the Secretary of Defense.
* WhyAmITicking
** The pyrokinetic twins.
** The Bellini's lymphocemia sufferers in "The Cure."
** Project Tin Man in "Fracture."
** The victims of [[spoiler:Bell's nanites]] in "Brave New World."
* WhyDontYouJustShootHim:
** [[LampshadeHanging Lampshaded]]:
--->'''Peter''': You know, there are easier ways to kill people.
** "Earthling," in which [[spoiler:Broyles deals with a corrosive alien shadow by shooting the body of the comatose cosmonaut the organism is possessing]].
** {{Averted}} by Walter in the Season 4 finale. [[spoiler: Olivia is the power source of Bell's doomsday. Walter shoots her in the head. Problem solved.]]
* WildChild: Seen in "Inner Child."
* WildMassGuessing: It's as though Abrams is reading Fringe's WMG page and saying [[AscendedFanon Sure, why not]]?
* WoobieDestroyerOfWorlds:
** Walternate.
** ''Eugene.''
* {{Wormsign}}: The burrowing mutant in "The Night of Desirable Objects" (S2 Ep2)has this in one scene.
* YankTheDogsChain:
** Frequently. Especially to Olivia. The most {{egregious}} of which... "This is my favourite time of day. So full of promise." Cue [[spoiler: ''apocalypse''.]]
** The Series Final. ''So very much.'' [[spoiler:Walter has spent the last few episodes dealing with the knowledge that, in order to save the world, he has to live permanently in the year 2167 and never see his family again. Donald/September tells Walter that he wishes to go instead and be with his son.]] Awesome. Then [[spoiler:Donald gets shot and Walter is the only one who can take his place...]]
* YouHaveOutlivedYourUsefulness: [[spoiler: Walternate's eventual plan for Olivia.]]
** Also, [[spoiler:the Observers' attitude towards Peter at the end of Season 3]].
* YouJustToldMe: [[spoiler: How Fauxlivia gets Meana to rat out Philip Broyles.]]
* YourHeadAsplode: "The Cure." And "The Box."
* YourMindMakesItReal: The effect of a hallucinogenic. Beyond the "standard" die-in-a-dream-die-for-real effect, due to MindOverMatter phlebotinum ''you'd die in the exact same manner''. So a guy who hallucinates an attack by glass-winged butterflies has his body manifest cuts. [[spoiler:In the presence of a nurse, somebody else hallucinates their throat being slit open...]]
** But then {{averted}} in "Lysergic Acid Diethylamide", which falls just short of a WholePlotReference to Film/{{Inception}}, complete with the fact that dying in the "dream" just causes you to wake up.
*** Arguably more just an example of a JourneyToTheCenterOfTheMind.
* {{Zeerust}}: Walter's old lab stuff.
* ZeppelinsFromAnotherWorld
** The Alternate Universe's Empire State Building's dirigible docking station is active unlike in our world where it was [[ItOnlyWorksOnce only used once]]. Also, this is played so straight it's basically an InvokedTrope.
** In "Over There: Part 1", zeppelins are used twice to tell the viewers (and sometimes, the characters), "Hey, we're in the other universe." Again, played so straight that the producers must be tropers themselves.
** In "Subject 13", Walter realizes young Olivia's crossed over when he sees she's drawn a picture of a zeppelin.
[[/folder]]

[[quoteright:150:The Crowners: \\
[[http://tvtropes.org/pmwiki/crowner.php/BestEpisode/Fringe Best Episode]]\\]]

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