* AccidentalInnuendo: Pete invites Claudia, Myka, and Leena to watch movies with him in his room and mentions his big flat screen TV. He also happens to be in his pajamas.
** Averted in the escape from Warehouse 2 with a handwave. [[spoiler: Even though Myka finds the wings of Daedalus and Pete makes a good argument, it's plainly clear that having Pete piggyback ride on Myka's back would look... interesting.]]
* AnticlimaxBoss: Due to the final season being cut short, Paracelsus's fate is wrapped up very quickly in the first episode. Makes all the buildup beforehand kind of pointless.
%%Do NOT add any CompleteMonster entries without going to [[http://tvtropes.org/pmwiki/posts.php?discussion=6vic3f9h1cy5qivsenw8llok&page=1 the cleanup thread first.]]
* CompleteMonster: Paracelsus is an alchemist born in the 16th Century who desired immortality and tested his experimental Philosopher's Stone on his brother's own family to see the results despite knowing the danger. In an effort to achieve immortality, he was responsible for the destruction of a whole village, claiming "sacrifices must be made." Paracelsus was frozen in bronze for centuries until being awoken in 2013 when his brother's family was [[WhoWantsToLiveForever tired of their immortality and wanted him to remove it]]. Paracelsus attempted to kill his brother, killing his wife instead. Escaping, Paracelsus went around to hospitals to cure people, but later drained all of them of life to fuel his immortality.
* CrowningMusicOfAwesome: The use of "The Ritual" from "[[Series/StarTrekTheOriginalSeries Amok Time]]" played during the climatic battle in "Don't Hate The Player".
** [[ClimacticMusic "Running Up That Hill (Deal With God)]] by Track and Field, during the scene where we discover that [[spoiler: Steve is really working for the Warehouse, and is subsequently killed by Sykes]] for no good reason at all.
* EvilIsCool: [=McPherson=], H.G. Wells, and Paracelsus.
* TheFireflyEffect: Leena got hit by the character (as opposed to series) subtype of this.
* FoeYay: Artie and [=MacPherson=]. It really seems like this in "Mild Mannered" when [=MacPherson=]'s ghost is haunting Artie and they reconcile with one another.
* FridgeLogic: [[spoiler: In the finale episode of season 3, why didn't HG just put the force field around the bomb when it was clearly stated it can contain the blast?]]
** One of the producers said on Twitter that [[spoiler: H.G. couldn't have known if the force field would hold when it was directly over the bomb.]] When you think of it that way, a [[spoiler: blast that big in that confined of an area probably wouldn't be a good idea.]]
** Indeed, it stands to reason and simple physics that [[spoiler: ''containing'' the blast would have been more taxing on the shield and rapidly used up the power, whist allowing the blast to dissipate outwards (destroying the Warehouse in the process) would have meant less of the explosion would have been directed towards those within the shield, keeping it running for long enough for them to survive.]]
* GeniusBonus: In "[[ChristmasEpisode Secret Santa]]", Claudia offhandedly asks how many piano tuners there could be in the Philadelphia area. This is a reference to the archetypical example of a [[https://en.wikipedia.org/wiki/Fermi_problem Fermi problem]], a form of estimation based on multiplying estimates to obtain a close approximation of an otherwise incomputible answer. The classic Fermi problem is 'How many piano tuners are there in Chicago?'.
* IdiotBall:
** Pete in "The Sky's The Limit". After being whammied by the levitation artifact that has caused several victims to be killed when thrown into the upper atmosphere a short time later, Pete only figures it's a good idea to stay inside or with a roof over his head ''after'' Artie suggests it.
** The Steinbrucks in "We All Fall Down". They instantly believe Artie despite having absolutely no reason to. They don't even ''try'' to verify his story. Keep in mind that this family has been entrusted with guarding this ArtifactOfDoom since 1517.
** Artie in the season five premiere. [[spoiler: He discovers that one of the forks that allows a person to exist outside of their "home" timeline is missing, immediately after returning from an alternate timeline where ''most of the warehouse staff are evil.'']] His reaction? "Huh, that's weird."
* IdiotPlot: One wonders how much trouble the gang would have avoided if they didn't have the staggeringly stupid tendency of separating all the time, often in the worst possible moments, and ignoring obvious warnings; and keeping secrets from each other despite repeatedly showing that this leads to the worst possible consequences.. Plus being taken out by civilians in ordinary hand-to-hand when they're supposed to be Secret Service.
* JerkassWoobie: [=McPherson=] and H.G. Wells.
* LesYay: Between Myka and HG Wells. Pete even comments that it's like having two Mykas around. Confirmed by the actresses that they were playing it a little bit like they 'were in love'.
* LikeYouWouldReallyDoIt: Myka quitting at the end of season 2. Sorry, ''Warehouse 13'', we've done this dance before with ''{{Eureka}}''. You're not going to do it.
** She reappears, without explanation, in the ChristmasEpisode.
*** WordOfGod is that the ChristmasEpisode is set out of sequence, between "Merge With Caution" and "Vendetta." (Though one wonders where all that snow went so fast...)
**** No doubt the ChristmasEpisode was simply delayed to air during Christmas season, anyway.
** The jury is obviously still out on this, but Aaron Ashmore has been hired to play Myka's replacement in Season 3. Whether or not it takes, though, is obviously up in the air for now.
*** In the first episode of season 3, she comes back at the end, after helping out with the investigation which just happens to feature a Myka PlotTailoredToTheParty. Looks like Jinks is staying for a while at least maybe.
** Ok, Syfy. You killed Artie in the first season finale, but you [[spoiler:brought him back to life with the Phoenix. You sent Myka away in the second season finale, but you arranged for her to come back in the next episode. Now you are asking us to believe that you killed an agent, HG Wells, and Mrs. Frederic, and in addition destroyed the very thing that the show is named after?]] Sorry, but we don't buy it.
*** [[spoiler: They have the means of bringing one person back to life with the metronome]], and the last moment of the season is an TheEndOrIsIt, with [[ChekhovsGun an artifact being pulled out]].
* MagnificentBastard: One per season; it seems to be a requirement to be the BigBad on this show.
* MoralEventHorizon:
** Some fans think this about [[spoiler:H. G. after she tried to destroy the entire human race by starting another ice age.]]
** Just in case Sykes' [[YouHaveOutlivedYourUsefulness casual disposal]] of his henchmen wasn't this, his murder of [[spoiler: Steve Jinks]] sure was.
** Paracelsus making himself and his family immortal by sacrificing ''600 people'' to make his Philosopher's Stone, all in the name of some bastardized idea of scientific progress.
** [[spoiler: Alternate Valda mind-controlling Claudia's sister for his EvilPlan than using her to send a dozen innocent people into a coma.]]
* {{Narm}}: "I'm the EpicFail!" said by Claudia while [[{{Wangst}} wangsting]] about her guilt over her lost brother.
* NarmCharm: Claudia and Claire bond over..."When I Grow Up" by Music/{{Garbage}}. It works, somehow, though.
* NightmareFuel: Dark Vault artifacts are friggin' messed up. Fun examples include the creepy shifting clown painting, the phone screaming "PICK UP! PICK UP!" and the baby doll that grows fangs when you get too close to it.
* ParanoiaFuel: Is that classic book you're reading fiction, or is it inspired by a very real and very evil person that lived at the time?
** And this could even lead to possible FridgeHorror and WhatAnIdiot moments when one considers how some of these artifacts were used. Obviously, [=P.T. Barnum=] really was a total {{Jerkass}} and [[TheBarnum in it for the money]] when he used an artifact (that could enlarge body parts and internal organs) to make freaks out of normal people...
*** Though considering we see how (some) artifacts are created, it may be that in some cases, even the horrific ones, the use of them was unintentional and un (or sub) conscious. So jerkasses they might have been but they might not have been so callous as to mistreat others.
* RetroactiveRecognition: Gibson from "Don't Hate Player" is played by a pre-[[Series/TheWalkingDead Walking Dead]] Steven Yeun(Glenn).
* RomanticPlotTumor: The forced [[spoiler:"Pete and Myka are suddenly in love"]] story in an already brief final season was met quite negatively.
* SeasonalRot: Season 5 isn't held in very high regard with the fandom, thanks to being only six episodes long, not having a very engaging storyline and forcing Pete and Myka together at the last minute.
* ShipSinking: Usually about once a season or so the show makes a point to remind us that Pete and Myka have no romantic interest in each other whatsoever.
** As of the finale, set sail.
* ShipTease: Pete subconsciously wants Myka to have babies.
** Also frequently with Myka and HG, especially in the scene where HG sneaks Myka into a police station by telling one of her coworkers by explaining that she's trying to "impress a lady" (the lady in question being Myka).
* SpiritualLicensee: This just may be the best ''Wiki/SCPFoundation'' TV series we're ever going to get.
* SpiritualSuccessor: It's also very similar to Syfy's earlier miniseries ''Series/TheLostRoom''. As well as ''FridayThe13thTheSeries''.
* {{Squick}}: In "Vendetta," a set of chains used in the people-stretching racks employed by the Spanish Inquisition has the power to replicate those effects when stretched taut. The viewer gets treated to a surprisingly graphic scene where Dickinson is killed with it, complete with bone-cracking noises as ''his fingers and legs contort to unnatural angles''.
* StrangledByTheRedString: [[spoiler:ExecutiveMeddling forced a romantic relationship to happen with Pete and Myka. It is not believable, at all. Especially not with how much emphasis was put on the two being LikeBrotherAndSister beforehand.]]
* TheyWastedAPerfectlyGoodCharacter: Leena. Sadly, she has had the ''least'' character development of any of the characters and her backstory hasn't been explored ''at all''. She was supposed to have a bigger role but as noted above the character variant of TheFireflyEffect struck.
* TheyWastedAPerfectlyGoodPlot: The SharedUniverse with ''Series/{{EUReKA}}'' and ''Series/{{Alphas}}'', in several ways:
** All three series have their own [[StoryArc Story Arcs]] that have far-reaching consequences, which could've had interesting effects on each other's arcs. [[RedSkiesCrossover They're rarely, if ever, mentioned]].
** The first two seasons of ''[=EUReKA=]'' centered around an enigmatic, powerful object known only as "The Artifact" and a NebulousEvilOrganization that wanted to control it. What does the crossover with ''[=EUReKA=]'' center around? Fargo traveling to South Dakota to upgrade the Warehouse's computers, and afterwards Claudia visiting Eureka to study Global Dynamics' technology. [[FridgeLogic This raises several questions...]]
*** At least Fargo's visit to the Warehouse was a ''thematic'' crossover, involving a fusion of futuristic technology with artifact magic. Claudia's visit to Eureka was basically pointless. The crisis does not involve an artifact going out of control, she doesn't use any artifacts to save the day, and there's really no point to her being there at all, other than some amusing sexual chemistry between her and Fargo...which is left dangling anyway since she never appears again. They could have replaced her character with some random old girlfriend of Fargo's that we've never seen before and ''nothing would change''.
** Steve is a LivingLieDetector, Pete has SpiderSense, Leena has AuraVision, Claudia is a GadgeteerGenius. Which ''Warehouse 13'' character crosses over to ''Alphas''? Dr. Vanessa, the completely ordinary ''side-character''.
* TearJerker: Claudia's reaction to [[spoiler: Steve Jinks']] death.
** [[spoiler: H.G. Wells death,]] especially "I smell apples".
* WhatAnIdiot: H.G. Wells asks about [=MacPherson=]'s necklace, and he tells her that it's ''keeping him alive''.
* WhatDoYouMeanItWasntMadeOnDrugs: Played with using Timothy Leary's reading glasses, which cause vivid, LSD-like hallucinations when worn. [[spoiler:They were used to find [=MacPherson's=] hidden auction of Warehouse artifacts in the first season finale.]] In "For the Team", Pete uses them to amuse himself when forced into a temporary desk job at the Warehouse.
* TheWoobie: Pete in "Trial" after his memory gets erased. When Myka is about to confront Eric's mother, you just want to hug him and make him feel better.
* TheUntwist: Yeah, Jinks is a traitor. Okay. Sure. We believe you.
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