Abandon Shipping: A fair portion of the fandom is completely okay with the Allison/Isaac and Scott/Kira pairings that started happening in Season 3. The same goes for Stiles/Malia and Derek/Braeden in Season 4.
Stiles. He suggests murdering Jackson in cold blood once it's found out that he's the Kanima even though Jackson had risked his life to help save Stiles and his friends before. While this could potentially save many lives, the way this high school student doesn't even flinch at saying such a thing is chilling. Throughout the entire series, he treats people who are not his friends like they barely exist and clearly doesn't value their lives highly. His methods are rather Machiavellian, for instance, when he gets Derek to strip without his permission in order to get Danny to trace a text. He also can get quite overbearing when trying to protect people he cares about, to the point of making decisions on their behalf without consulting them first.
Word of God says that Isaac tends to model himself after whatever leader he's following at the time. So when he was following Derek he took on Derek's traits (and Derek was kind of dark himself at the time). When he switched to Scott, he became kinder and more compassionate.
Narrowly defied by Holland Roden, who brought up to Jeff Davis that maybe Peter gas-lighting Lydia and using her as his marionette might influence Lydia's comfort levels when in the same room with him.
Played entirely straight after the events of "Motel California". Scott's suicide is heavily implied to be genuine, Isaac was mindfucked to the point of hiding under the bed in a catatonic state, Boyd hallucinated his dead sister and tried to drown himself, Ethan nearly cut himself in half, and Lydia had to hear the final moments of several of the past suicides in the hotel, and it's never brought up again or have any form of aftermath.
Also Derek. Yes, he's stoic, but given the sheer amount of mental trauma the guy has gone through, he really should be a wreck by now- even ignoring the fact that he gets ripped to shreds physically every five minutes, his near constant loss of agency would be enough to drive anyone to breaking point.
Season 4 in general is guilty of this. 3B was far darker than previous seasons, with Stiles — a character who already had a huge Guilt Complex — possessed by the nogitsune, almost killing Scott and trying to commit suicide to save everyone else. Then there's Allison's death — the first death of a major character who is Lydia's best friend, Isaac's girlfriend, Chris's last family member and Scott's first love. The pack even breaks apart with Isaac and Chris Argent leaving for France. You'd think Season 4 would have the pack acknowledge the trauma, grieve for Allison, reassure Stiles that none of it was his fault and preferably get some group therapy. Instead they plunge straight into trips to Mexico and lacrosse practice, and the past few months are barely mentioned. Especially highlighted as previous trauma's like Matt trying to kill them in Season 2 and Scott, Stiles and Allison going into limbo in 3A — which were much less intense than 3B — were actually explored with counselling sessions, nightmares and support from their parents, while the characters are given zero screen-time of them recovering after season 3B.
Especially for Stiles, who had just pretty much been through the most traumatic thing in the series - he makes a joke about it in one Season 4 episode. At the end of Season 3 he directly says that the only good thing about the situation is that it looks like he's dying, and by Season 4, implied to be set not much later, he seems pretty much fine, with the only real nod to it being a conversation he has with Malia. And then, in Season 5, his main arc is the guilt he feels over killing Donovan.
Averted with Liam. After being bitten by Scott in order to save him from a wendigo; he's been kidnapped, poisoned, left in a well to die, nearly immolated, and beaten badly by a berserker. That's just the physical half of it: not being able to tell anyone about his transformation into a werewolf has him feeling isolated, being put on the Deadpool has made him extremely paranoid and the berserker encounter still haunts to nearly PTSD-like levels. Keep in mind that he's still a 15-year-old freshman and all of the above-mentioned incidents have occurred in the time-span of less than a month. Arguably, his reaction to everything that has happened makes him the most normal person in the entire setting.
Allison. Some think she is absolved of her actions (kidnapping, torture, attempted murder) during her HeelFace Turn because of Gerard's manipulations and her mother's suicide. Others think she was too Easily Forgiven for her actions. It doesn't help that most of Scott and Allison's talk during the aftermath of the Season 2 finale was implied to be offscreen.
Derek Hale. Over half of fandom seems to think he's a great guy with good intentions and is just misunderstood by Scott, while the rest either just don't like him or outright hate him for all the things he's done. Including breaking the arm of a known abuse survivor to "teach" him.
Parrish in Season 5. Some people are disturbed by his sexual hallucinations of Lydia, which are hinted to be part of their supernatural connection (as they are both harbingers of death) because she's a high school girl — albeit a legally adult one at 18. There's also lots of Die for Our Ship, since the show ship teases a possible relationship between Lydia and Parrish, while also hinting at possible feelings between Lydia and Stiles. Yet others are irritated that Parrish has slowly taken on a greater role on the show, after starting out as a Mauve Shirt in Season 3B. Most however, think he was the best thing about season five, especially his no nonsense anti-hero hellhound alter-ego who was determined in his goals and completely wiped the floor with the smug chimeras who were on a power trip, and he was the only one to go solo against the Beast of Gevaudaun multiple times and survive, plus a lot of other bad-ass moments. His altar ego's more or less neutrality was refreshing to some as a lot of the characters in season five were either outright evil or completely good with the only occasional mistake.
The Scott/Stiles fight in Season 5 is a huge one, with fans divided over which character is in the right and laying blame on the other side. About the only thing the fandom unites on is agreeing that the conflict is unnecessary anyway, given Scott and Stiles have had an unbreakable friendship despite angst and drama surrounding them for years and the fight only harmed the relationship that has been the foundation of the show since the start.
In the fandom, a fair amount of fans seem to ship Stiles/his jeep. He is, after all, the Launcher of a Thousand Ships, and he's clearly very attached to it... It really doesn't help that the Season 2 credits have established couples appearing together with Scott with Allison, Jackson with Lydia, and... Stiles with his jeep.
There is also a section of fans who ship Derek/his Camaro.
Gerard Argent is the cold-blooded head of the Argent family and de facto leader of the werewolf hunters. Prior to the series, he ordered his daughter Kate to seduce a young Derek Hale, before killing his family. In his first appearance, Gerard murders an innocent werewolf before declaring all werewolves in Beacon Hills will be indiscriminately killed, even forcing his son Chris to kill Chris's wife Victoria when she is bitten. Gerard then tries to manipulate his granddaughter Alison into becoming a ruthless hunter herself. Killing the master of a dangerous beast to take control of the monster, Gerard uses it to hold an unwitting crowd hostage. Despite claiming to be avenging his daughter Kate, Gerard reveals his true plan was to get bitten by a werewolf, to cure his cancer and take his powers and declares he would kill his own son for the sake of his survival. When his plans backfires, Gerard simply orders his monster to kill everyone. In the past, when a werewolf tried to negotiate peace between the wolves and the hunters, Gerard murdered both the werewolf pack and his own men, framing the innocent werewolf for the massacre. In season 6, Gerard takes advantage of the spreading fear in Beacon Hills to amass an army of hunters to simply wipe out not just the supernaturals in Beacon Hills, but the whole world as well. In the series finale, Gerard rounds up Scott's loved ones with the intent to kill them, and having used Kate, now a werejaguar, coldly attempts to kill her for being "one of them."
The Nogitsune possessing Stiles, self-named Void, the Big Bad of season 3B, mentally and emotionally torments him, forces him to torture his friends, and go on constant murder sprees. Decades ago, it was originally summoned by Kira's mother at an internment camp to avenge her American lover, but instead massacres the internment camp, prisoners and guards alike, before finally being subdued. In the present, he sets up multiple traps, including sabotaging an electric cable killing several people and rendering Isaac Lahey comatose; has an arrow shot into Coach Finstock's stomach; and lets a bomb go off in the Sheriff's station, all while pretending to be Stiles in front of his best friend Scott, before twisting a sword in Scott's gut. When he's separated from Stiles, he takes control of the Oni and has one of them kill Allison Argent. He later leads the Oni on a massacre at the local hospital and police station. In the final showdown, he plans on having Scott kill Stiles, citing it as the only way he can be defeated, simply because it sees it all as a game.
The Beast of Gévaudan, from season 5, is known as history's most famous and vicious werewolf. In the 1700s, he was credited with killing 112 people, but the Dread Doctors claimed it was closer to 500, including children. His identity was discovered by Marie-Jeanne Valet to be her own brother, Sebastian Valet, along with the corpses of his victims in a hidden stash. When he confessed, he was proud of his crimes, and claims his motivation was to be remembered for the horrors he caused. When Marie opposed him, he was willing to kill her with no hesitation or remorse, spending three years trying to kill her. As Marie-Jeanne fatally wounds him, he muses that he will live through his legacy, until Marie-Jeanne tells him that his name and image will be erased, and he'll only be remembered as the Beast. In the present day, the Beast is resurrected by the Dread Doctors, but doesn't remember his former identity. As he tries to piece his memory together, he goes on a new killing spree. Once he's resurrected via his vessel, Mason Hewitt, he is content with erasing him and kills the Dread Doctors, coldly dismissing the death of his old friend Marcel, who became the head Dread Doctor for the purposes of resurrecting him, even expressing annoyance at Scott and Liam for being heroic werewolves as he prepares to pick off where he left off. A vicious egomaniac obsessed with having a murderous legacy, Sebastian is seen as a Beast throughout history, for both being a literal monster, and the Beast representing his true personality.
Garrett Douglas, from season 6A, is the assumed identity of Der Soldat, an Alpha part löwensmensch (werelion) and werewolf who held the rank of Hauptmann, or Captain, as part of Ahnenerbe. In World War II, he used the Nazi Party as a means to his own ends and he learned of the Ghost Riders, which he sought to use to create an army under his control. At one point he kills another officer who mocked his plans and forced one of his men to open the rift into the Riders' limbo like world, burning said soldier to death and resulting in the Wild Hunt decimating his men. After being kept in suspended animation by the Dread Doctors, he broke free following their deaths, assuming the identity of a harmless high school teacher, while secretly killing people and eating the pineal gland of their brains. When the Wild Hunt arrive in Beacon Hills, he seemingly helps Scott's pack capture one of the riders, before killing said rider, devouring its pineal gland and taking its powers. With his newfound powers, Douglas begins reaping souls, and seeks to brainwash Parish to use his Hell Hound powers to enter the Riders' world and amass an army from the souls the Riders claimed. In the finale, he keeps Corey locked up with wires and electronics hooked into his body, using his chimera powers to merge the Riders' world with the mundane world to bring about his supernatural army, all the while mocking Scott and his friends for standing against him, intending to place them in his army as well.
The Anuk-Ite, from season 6B, is a malevolent entity that delights in using fear to torment its victims. The Anuk-Ite spreads fear through supernatural spider infestations, turning fear into murderous desire as communities tear themselves apart, all the while sowing in the chaos and death it causes. Imprisoned in the Wild Hunt, when it escapes one of the first things it does is drive the head doctor of Eichen House to kill his patients in a panic. The Anuk-Ite plays up the growing fear among Beacon Hills human population, making the genocidal war Gerard is starting even worse to draw power from it and directly influencing most of his soldiers. Taking advantage of the paranoia in the school, it uses Miss Monroe's cruel tests of flushing out supernaturals, to find the one who hosts it's other half, killing those it can't use; its other half is in a young werewolf named Quinn whose pack it kills, before having Aaron kill Quinn and becoming full once again. Now free, it displays its power by turning everyone who cross its path into statues, before making a deal with Gerard to battle Scott. In the finale, the Anuk-Ite picks off Scott's allies, using hallucinations and their emotionsparticularly of loved onesagainst them, and it's revealed the people turned to statues are still alive within them. During its final confrontation with Scott, it mocks Scott with Alison's death, revealing its intent to never be trapped again by using Scott's fear and taking his powers.
In Season 3A episode "Lunar Ellipse", he breaks through Jennifer Blake's mountain ash barrier to save his and his friends' parents from being sacrificed, becoming a True Alpha in the process.
Scott: I'm an Alpha now.
In Season 4 "Smoke and Mirrors", he breaks free of Kate's Berserker spell and furiously faces off against Peter who planned the whole thing. Peter at first as the upper hand but when Peter threatens Liam Scott embraces his true nature and fights back with greater super strength, totally handing Peter's ass to him.
The Hellhound has a few of these moments as well, wiping the floor with most of the chimera, and being the only one capable of standing a chance against the most powerful werewolf in known history.
Even Peter gets these in season six, being able to put up a decent fight against multiple Ghost Riders where before, the pack struggled to deal with one, however, later the pack members such as Liam and Malia manage to do the same so it may be a case of adapting.
Die for Our Ship: Pretty much anyone who dates Derek or Stiles, but mainly Braeden and Malia. Erica got on both sides of the Stiles/Derek ship, kissing Derek and admitting to a huge crush on Stiles from the past.
Draco in Leather Pants: Happens frequently to Peter Hale. He is devious, manipulative, often sadistic, violent, and generally only looks out for No. 1, even when he seemingly doesn't. And yet, he is so charming, sexy, and witty, that it is really tempting to wonder if he's just misunderstood.
Theo is working with the Dread Doctors and smashes the hand of the man who pretended to be his father because he screwed up once by writing a false signature. But as he's good-looking and when around the oblivious Pack acts helpful (really pushing them in the direction that he wants them to go), many fans can't bring themselves to hate him.
An almost literal example with Kate Argent. While she's undoubtedly a monster, she likes wearing lots of leather, and looks damn good in it. It's really hard not to look at her in those tight pants and shirts and say "if only she was slightly less psychotic. . . "
Erica. Many fans loved having a female werewolf in the cast and were disappointed when Gage Golightly left, leading to her character's abrupt off-screen demise.
Danny is greatly beloved by the fandom despite having relatively little time onscreen. He even got a boyfriend and more impact on the storyline out of it in Season 3.
Isaac proved to be so popular, his role got significantly expanded.
Sheriff Stilinski and Mrs. McCall are also very popular with fans, probably due to them both being Good Parents with very snarky personalities.
As of Season 3, Ethan and Kali have gotten a pretty good following as well.
Braeden has her detractors, but also a solid group of followers.
Deputy Parrish is rather well-liked, especially as a Hellhound where he no selled the Chimeras attacks on him and curb stomped them in return, for those who considered some or all the Chimera to be The Scrappy, this could be considered a Take That, Scrappy!.
In Season 5, the members of the Chimera Pack alternate between this, and The Scrappy, depending who you ask. The one exception to this, if Reddit is any indication, is Corey, who's reaching Isaac-levels of popularity.
Kate, despite being borderline sociopathic, is quite attractive. Actually a plot point, given that she sexually manipulated Derek as a stepping stone to her Moral Event Horizon of burning almost all of his family alive.
Peter Hale. Scott's mom certainly agreed on the sexy front, mostly due to being out of the loop on the 'evil'.
The entire Alpha Pack, with Ennis arguably being the only one falling short of looking like a model (he is also the first to die).
Jennifer the Darach. Subverted in that she is using Glamour to conceal her disfiguring injuries and be super-seductive.
Many fans were rather disappointed in Season 4 when Garrett and Violet turned out to be shortlived villains.
As of Season 5, Theo Raeken certainly fits the bill.
Fanon: Although never confirmed in canon, many fans generally accept John as being the Sheriff's first name. Eventually debunked in season 6 where we learn his first name is Noah.
Some fans like to forget that Season 3 and everything after it ever happened, since that means that Jackson, Erica, and Boyd are either dead or forever in London. Add that to the general divisiveness that is Season 3 and some of its characters (the twins Aiden and Ethan, Deucalion, Jennifer, Malia) or some plot conclusions about Corain general, Derek (and Cora) leaving, Allissac, among other minor ones, and you get a popular point of Fanon Discontinuity. Also, like many other shows, Teen Wolf wasn't very well known during its first season and mostly gained its popular fanbase during the second, so most of the popular fanfiction pieces were written in the ten month hiatus between Season 2 and 3 and therefore accidentally or on purpose ignore Season 3.
Even more so from Season 4 onwards. Season 3 at least has some popular aspects that a fair portion of the fandom accept, like Stiles's possession arc, Lydia discovering her banshee abilities, and Isaac and Danny getting bigger roles. However the death of Allison and departure of Isaac at the end of Season 3, total exclusion of Danny in Season 4, and Derek's departure in Season 5 result in this happening in a big way.
It also started in 2011, when the Twilight franchise was still popular.
Genius Bonus, also Stealth Pun: Stiles's line "Be a Man. Be a Werewolf. Not a Teen Wolf, but a Werewolf." In Old English, from whence the word Werewolf derives, 'wer' means man.
Growing the Beard: Season 1 was mostly the typical "normal teen is now a werewolf" story, but Season 2 slowly moved away from that. By the time Season 3 started, the show had developed a complex plot with a lot of interesting mythology and was trying to become truly compelling television.
Despite the quality dip brought on by the 4th season fighting- at times flailing to establish a new status quo, the shows themes and exemplary work from the remaining cast was able to keep them afloat in to two more season from which the overall quality stabilized and the writing got even still better.
He Really Can Act: While Dylan O'Brien was considered one of the stronger actors in the show from the start, his role as Stiles was mostly restricted to Plucky Comic Relief and Deadpan Snarker, raising questions of how well he could play roles outside that range. Then in Season 3b, he took on the void!Stiles arc, playing the thousand-year old evil nogitsune spirit controlling his body. His performance was lauded as one of the best villains in the whole show and proved him as the truly exceptional, stand out actor of the cast. In one episode in particular O'Brien expertly played normal Stiles, the nogitsune, the nogistune pretending to be Stiles and a broken, traumatized Stiles at the end.
Harsher in Hindsight: Listen to Kate being complimentary to Scott when she first meets him (especially his "puppy dog eyes") after knowing that she seduced teenage Derek to get information to murder almost his whole family (and her sadistic, Interplay of Sex and Violence personality in general).
The episode in which Scott battles the Kanima in the library came out less than a week after The Amazing Spider-Man, which featured a similar scene. Hell, the Kanima/Jackson himself is an expy of sorts to The Lizard.
Given his ego, Jackson would probably be gratified to know that it took two guys to replace him. His girlfriend and best friend respectively split a pair of identical twins between them after Jackson left Beacon Hills.
Back in Season 1, Derek was furious about Scott howling through the school PA system, late at night, in an effort to attract the Alpha, because he was worried it would "attract the entire state to the school?!". Since then, werewolves and Kanima have fought inside the building (often during the school day!), teachers have disappeared, murders have been attempted, and the locker room has been trashed multiple times. It almost never provokes a prompt response from anybody, even during the daytime when the building is filled with students and faculty!
Though makeup (and the lack thereof) does a pretty good job making her appear less pretty than some of her classmates, there isn't much to be done to hide her more. . . obviousassets.
Stiles generally isn't considered very attractive and fails miserably with girls, despite the fact his actor Dylan O'Brien isn't far off Jackson's looks. To the show's credit, in early seasons they do give Stiles a buzz cut which does a good job making him look younger and gawkier, and dress him in baggy t-shirts and plaid layers so the already lean O'Brien appears much more gangly and scrawny than he in reality. They've also never had Stiles shirtless in contrast to the other guys near-episodic shirtless scenes.
Jerkass Woobie: Both Isaac and Erica post-transformation thanks to the fact that both are Drunk with Power. Both come from heartbreaking pasts, both decide to lash out the most cruel of ways. This stopped as the series progressed until Isaac completely lost the Jerkass portion and Erica became much more relatable and likable as a character.
Launcher of a Thousand Ships: Stiles. He gets shipped with anyone who's ever appeared on the show. And sometimes those who haven't, too. Whether or not he's even interacted with some of these people on screen doesn't seem to matter, either.
It is less intense with Scott, but due to constant friendly interaction with nearly everyone he is heading this way.
Love to Hate: Kate Argent really isn't a good person, and especially her treatment of Derek regularly pushes her into The Sociopath territory, making viewers wish for her imminent demise, but damn, she has a nice swagger.
Peter Hale is full of bad touch! It'd probably be easier to count the scenes he's in that don't have elements of this. The list includes Scott, Stiles, Melissa McCall, Allison, and most importantly, Lydia.
Kate's also pretty skeevy, with her comments on Scott's big brown eyes and... everything about the way she acts around Derek, especially considering their mutual backstory. Turned Up to Eleven when her interactions are with the magically teenaged Derek, played by the rather young-looking Ian Nelson.
Kate Argent setting fire to the Hale house, killing most of Derek's family, which included children and human members too. And everything else on top of that: torturing Derek physically and emotionally and almost executing Scott, and attempting to groom her own niece into becoming a killer.
To Gerard Argent, this is a daily bridge. See Complete Monster. His definite points of evil so far are threatening to kill Scott's mother, force his son to kill his wife, turn Allison into a perfect replacement for Kate, and beating Stiles half to death. He also essentially started the werewolf/hunter war in Beacon Hills, as we learn in season 3A. And starts another in Season 6B.
As tragic as Peter's backstory is and how suave he may be, it's hard to get past the fact he killed his niece for her Alpha powers. He may have crossed it in series when he tried to force Scott to kill his friends in Night School.
Narm: The hashtags that MTV puts up in the corner on every important scene in a new episode. They can really kill the mood.
Whenever a werewolf runs on all fours. It looks about as ridiculous as one would expect a human using both their hands and feet to run at a fast pace. The crew seemed to notice given how it got dropped after a few seasons. The exception to this was The Beast of Gevaudan who in werewolf form had longer arms so it looked more natural.
Lydia's mother saying "oh honey" when Tracy throws up black murky liquid and a feather. It's delivered in such a fashion, you would think she was comforting a child having a temper tantrum.
Narm Charm: It isn't the best show of the decade by a long shot, but it's fun and somehow still appealing to a fairly large demographic.
One True Threesome: Scott/Allison/Isaac seemed to be headed there in Season 3, especially as they moved into more of a love triangle dynamic during Season 3. Jeff Davis certainly wasn't helping matters by stating that he doesn't like love triangles and making ambiguous comments like "agreed". Then things developed ...differently.
Scott/Stiles/Lydia is pretty popular by Season 5, largely because they're the only original cast members left and by this point have gone through hell and back together more times than they can count.
Ethan and Aiden proved to be much more entertaining than the other Alphas.
Ron the Death Eater: Malia often gets vilified in fanfic, due to her being perceived as coming between two fan-favourite pairings. She's joined by eternal boyscout Jordan Parrish in Season 5, due to the poor man having some romantic tension with Lydia.
The titular Teen Wolf, Scott McCall himself faces this at times. Despite being a kindhearted young man who is always willing to help others out who he makes the occasional foolish mistake, there's a small portion of the fanbase who act as if he's the most evil character in the show.
Seasonal Rot: Season 4. Although 3A was criticized for Jackson, Erica, and Boyd's departures, Cora's characterization, and a rocky season finale, there were still some popular aspects, such as a more united group, Ensemble Darkhorses getting more focus, Lydia's development, Melissa and the Sheriff in the know), and 3b was incredibly well-received. However, Season 4 lost Allison, Isaac, and Danny, and gave zero time to the characters recovering or even discussing the traumatic events of 3B. Then Malia was thrown as one of the True Companions despite 3B leaving her true allegiances ambiguous and put her in a relationship with Stiles with zero build up apart from their utterly loathed hook up in the basement of a mental institution, which most viewers prayed was Stiles hallucinating. About the only relationship or pack bonding arc was Liam becoming Scott's beta, while Kira had barely any scenes outside of her relationship with Scott, and Lydia and Derek were sidelined. Add in a main plot far less compelling and more plot-holey than previous seasons with the "secret" Peter/Kate team up revealed way in advance leaving no tension, the episode-to-episode villain being a deadpool list rather than a more personal enemy like Gerard or Jennifer, an utterly underwhelming reveal Meredith was somehow involved, a bunch of filler episodes, Scott and Stiles's parents struggling with money which led to nothing, and nonsensical finale with Scott managing to beat Peter for... undetermined reasons.
Ship Mates: Scott/Stiles fans often pair with Allison/Lydia and later Kira/Malia. Meanwhile Scott/Kira, Allison/Isaac and Lydia/Stiles — all of which were simultaneously canon or teased during 3b - form a natural fleet of shipmates. Boyd/Erica are often included in either of those line ups.
Stiles/Derek ship mates are more complicated, especially later on with having to get their canon love interests out of the way. In early seasons Sterek fans paired with Scott/Allison and Jackson/Lydia. Scott/Isaac also became a popular mate, and there's also Lydia/Cora, Scott/Kira, Kira/Malia...
Ship Sinking: The Scott/Allison and Isaac/Allison ships officially became impossible once Allison died.
The creators of the series noted that they planned to make a werewolf that someone could kiss, or rather make the werewolf sexy. What they have done is made the werewolf look like the one from The Werewolf Of London from the 1930s. Strangely averted with Aiden and Ethan, who are just handsome guys with red eyes and fangs, but none of the facial swelling or excess hair that Scott and Derek habitually exhibit (probably to save on makeup time and money).
The CGI deer and mountain lion look pretty cheap, while the Alpha resembles a gorilla with more claws and glowing red eyes. The Alpha also looks quite stop-motion-esque every time it's chasing someone.
Peter Hale's Alpha form actually looks pretty good and scary through most of season one, where it's seen mostly in silhouette through a combination of CG and oversized stuntmen in suits. Then you get to see it in all it's glory in the last two episodes. . . and it's a really cheesy low-budget CGI creature that would have looked more real if it had been cell-animated. Notably, the show minimized it's screen time in those two episodes, and didn't attempt another fully-CGI monster until the second half of Season 5.
At times the CGI can be acceptable, at other times the CGI is painful.
Season 3 episode "Fireflies" has werewolves walking in a dark hallway with glowing eyes... and at times you can see their eyes casting lights in the walls.
Deucalion's "demon wolf" form.
In "Lunar Ellipse", Jennifer uses the shards of glass from the shattered skylight to kill Kali. The skylight was made of an opaque (or at least very dirty) glass. But the shards are all perfectly clear.
Matt was this in Season 2, due to being perceived as a romantic rival to Scott. Ceased when he turned out to be the Kanima's Master and was subsequently killed.
Cora picked up the role in Season 3A due to her incredibly ambiguous backstory and the fact that most of her behaviour was identical to Derek when he's in one of his worst moods. Ceased to be an issue when she, too, left after finishing her arc.
When Jackson goes through his transformation into the kanima in Season 2, he hallucinates eating a snake. A few moments later he sees it slither out of his eye.
Season 3: flies in wounds. Just any time bugs show up, really. Somehow, this show made fireflies scary.
There are repeated implications that when Kate slept with Derek, he was young enough for it to be statutory rape. In Season 4, she reverts him mentally and physically to a 16-year-old so he will trust her again and continues manipulating him in a sexual manner, while she's roughly twice his age.
They Wasted a Perfectly Good Character: Boyd: an intriguing character who gets almost no development until "Motel California" — and then he's killed off an episode later. And unlike the deaths of Erica and Allison, he wasn't killed because the actor wanted to leave.
Likewise Danny who had was a solid recurring character during the first three seasons and one of the few human characters. At the end of Season 3 he revealed he'd known about the supernatural all along...and promptly vanished forever.
Kira got written out seemingly for little reason other then the fact the writers didn't care to continue with the character despite many fans pointing out how with her Kitsune side acting up, she was one of the most interesting characters on the show at the time in terms of potential storylines that could come out from it.
Everyone does the round robin on this one, although the one who's consistently deserving of a hug and a blanket is Isaac. It's to the point where Word of God has essentially made him into a designated Woobie; case in point, when asked if Isaac would be treated not like crap in Season 3, Jeff Davis only response was a snarky, "Where's the fun in that?"
Scott turns out to be a pretty big woobie, after 3A, and particularly "Frayed" and "Motel California", where he nearly dies over the guilt he's been carrying around about everything. Twice.
Stiles has taken this up to eleven after being possessed by the Nogitsune. Being stuck in a basement with a steel trap on his leg as a demonic figure tells him riddles, hallucinating constantly and never quite sure when he's awake or not, having panic attacks in the middle of school, forced to kill and torture people including his friends, and being tricked into thinking he has the same illness that killed his mother. Every tear he cries in Season 3B is like a knife in the heart.
And that's not even considering that the disease his mother died of made her think Stiles was trying to kill her, that Stiles does actually blame himself for her death worries his dad does too and is terrified his father see's him as a burden he never wanted.
As of Season 5, most of the Chimeras are this, but two of note are Tracy and Corey:
Tracy is a girl suffering from supposed night terrors who gets experimented on and turned into a kanima-werewolf hybrid and, in her fugue state, kills her own father, and is killed herself before she can be saved by Malia.
Corey, meanwhile, has not been having a good sophomore year: his boyfriend is turned into a chimera and poisons him, which causes his arm to necrotize and require a skin graft. This, in turn, makes him targeted and transformed. He's understandably terrified when he starts healing quickly, and Scott's brusque treatment of him to gain access to his memories doesn't help calm him down either. The kid needs a hug, badly.
Kira becomes this in Season 5 when her Kitsune side begins to take control over her at certain parts which leads her to deal with the revelation she has an evil side she can't control that's almost killed a Chimera, nearly forced her to murder her own mother and seemingly actually kill a Chimera, to which she has no memory of and gets arrested for it after wandering miles out of Beacon Hills and snapping back to reality only to be confused as to how she got out there. It's get bad to the point that she's forced to leave Beacon Hills after discovering the Dread Doctors had gotten hold of her before she came back to the town in the premiere.
Jennifer Blake's gutting backstory doesn't excuse her actions, but she does get more humanized as a result of it.
Matt as well. Controlling Jackson as the Kanima into ruthlessly murdering others is nothing that can be overlooked but when the victims are revealed to be those who almost let him drown, he doesn't come off as utterly monstrous.
Word of God: Jackson's best friend Danny apparently graduated early in his junior year, as per series creator Jeff Davis.