These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Alas, Poor Scrappy: Oliver is painfully killed by a witch's curse just when he'd begun taking real steps toward redeeming himself.
Base Breaker: Sonja Sohn's portrayal of Esther. Some fans love her dangerous, deranged, fanatical take on the character, while others hate that she feels nothing like the previous portrayals.
Elijah's storyline in season 2 revealing his dark and forgotten past; either it derails the character, and eliminates any claim that he once had to moral superiority (not to mention the fridge logic of none of his siblings calling him out for his actions), or it adds new complexity to an already likable character, similar to the purpose of Stefan's storyline in season three of TVD .
Villain Decay: Which is also a mix of badass decay. Mikael was considered The Dreaded as far as Klaus and the rest of the originals is concerned. Upon his first appearance it took alot of effort to bring him down and now it appears that Klaus could take him on in a fight with little trouble. Even Hayley fared better against him one on one when she was trapped in a spirit realm with him. Didn't help that he was unceremoniously killed off by Finn.
Character Exaggeration: While not flanderized, both Klaus and Elijah have been...slightly simplified to an extant. Occassionally it's hard for an episode to go by without characters mentioning how noble Elijah is, or for Klaus to go without using lengthy speeches to threaten those around him. However their acting strength alone is enough to ignore some of the writers more over-the-top 'britishisms' and season two has dropped a lot of the needless Elijah shilling. Sonja Sohn's Esther comes off as much more diabolic and vindictive than Alice Evans portrayal
In the struggles among vampires, witches, werewolves and humans, MoniqueDeveraux from Season One stands out and shows some of the most ancient vampires that evil knows no age. A teenage girl killed in a botched Harvest Ritual, her aunt Sophie struggled to have Monique resurrected, and when she succeeds, Monique repays her aunt by murdering her and seeing it as another casualty of war. She would later go on to assist the witch leader Celeste, and after Celeste dies, does the same to their new leader Genevieve. Hardened by her religious loyalty to The Ancestors, Monique is willing to kill Genevieve simply because they told her to, only relenting when they order her to kill Klaus and Hayley's unborn baby, and sadistically attempting to kill Hayley to induce a miscarrige. In addition to this, Monique scapegoats Davina, blaming her for the Harvest going wrong, simply because she survived and gets the other witches to do the same. When Hayley goes into labor, she and the other witches abduct her; Monique tells her that they will kill her baby and there is nothing she and Klaus can do about it. After Hayley gives birth, Monique slits her throat and leaves her to die While preparing the ritual to kill the baby, Monique talks to another Harvest girl about usurping Genevieve all together. When facing defeat, Monique attempts to stab the baby. While she does have a Freudian Excuse in being killed in a ritual and corrupted by the Ancestors, the other Harvest girls went through the same thing and didn't come out as evil or crazy as Monique. Sadistic and fanatical, Monique willingly reaches depths that most vampires, witches and werewolves in the conflict don't.
FrancescaCorrea, also introduced in Season One, is a descendant of the thought to be extinct Guerra werewolf clan/crime family, but poses as a human to control their faction. Despite signing a peace treaty between werewolves, vampires, witches and humans, she helps intensify the conflict by masterminding the bombings on the home of the Crescent werewolves, with children in the home, in order to frame the vampires. She intimidates Father Kieran's niece Camille into looking for a key that might expose her family for what they are. Francesca is revealed to be in cahoots with the witches, and oversees the witch leader Genevieve, who makes the moonlight rings. In return for the rings, Francesca gives the witches Hayley so that they can kill her baby. With these rings, Francesca and her brothers massacre a small army of vampires and savagely maul Elijah. Francesca cares not for her family and minions, using even her brothers as bodyguards, claiming that she is the top dog and it's her minions' job to keep the fight from getting to her. She maintains control by running her werewolves as a gang, all while secluding herself to avoid retaliation. When the fight does reach her, she flees while Elijah kills her brothers.
Josh for being a well-portrayed gay character and Adorkable.
Father Kieran proved very popular with fans as well. Many were disappointed that he died instead of becoming a regular for Season Two.
Gia is also becoming quite popular.
Like on The Vampire Diaries, Kol is proving to be one of the most popular characters of this series. He even got his own online mini series.
Yusef Gatewood's Finn was so loved by fans that he got promoted to main character status seven episodes into Season Two.
After just one episode, fan reaction to Freya has been ecstatic with many calling her a new favorite character and a keeper. Saving Rebekah's life probably helped
Fan-Preferred Couple: People really want Kol and Davina together and they may get their wish now that Kol's in Kaleb's body.
Fridge Logic: Esther's plan to destroy Rebekah's body with the white oak stake doesn't make sense since we already know it doesn't work like that from when Alaric used it in on Klaus when the latter was in Tyler's body.
Les Yay: Rebekah and Cami at the bar in "Tangled Up In Blue".
A lot of people remarked on Rebekah and Hayley's great chemistry as soon as the former joined the series (probably helped by the actresses being very close friends).
Magnificent Bastard: Celeste, a master of the very long game which somehow completely avoids any feeling of Xanatos Roulette. However, this is ultimately subverted in Episode Fifteen when she is Out Gambited by Elijah and proves to be a Smug Snake bent on petty revenge against him for something he didn't even do.
Between the witches and the originals it's all one big battle of who is the bigger Magnificent Bastard/Bitch.
And as of Episode 1.21, the winner seems to be Francesca Correa, the supposed leader of the human faction, who turns out to be descended from a werewolf bloodline thought to have been extinguished by Marcel in the 1920s. By the end of the episode, her family is in possession of the black kyanite stones that prevent them from turning in the full moon (at the expense of draining Klaus' strength thanks to Genevieve), every vampire in the Quarter has been poisoned with werewolf venom, and she's all but taken control of the werewolf clans to take back New Orleans. Unfortunately for her, in the Season Two premiere, the Mikaelsons take back their city and their status as Magnificent Bastards, and she, too, proves to be just a high-functioning Smug Snake with no redeeming qualities; she doesn't even get the dignity of an on-screen death.
The season finale shows that the real Magnificent Bitch is Esther Mikaelson, who had taken control over the ancestor witches and used her power to get the witches to go after her children and granddaughter.
With the many Magnificent Bastards popping up each season, one can simply call this The Magnificent Bastards Show
Moral Event Horizon: Klaus daggering Elijah was still a pretty powerful scene. Topped off by Klaus's reasons as to why he daggered him.
Agnes for brainwashing Camille's brother to go on a killing spree and all of the witches except Sophie for slaughtering three innocent girls, including Sophie's niece, and trying to kill Davina as well.
It doesn't take a whole episode after Monique is resurrected before she kills Sophie, the very person who has spent the last 8 months of her life devoted to finding a way to save her. All Sophie did, she did for her and the other girls, but mostly for her. It paints her role in the story quite clearly.
Genevieve and the other witches except Davina for deciding that it's somehow a good idea to kill a newborn baby as a sacrifice and would have gone through with it if Team Klaus hadn't stopped them. It's at this point that the witches and the ancestors cement themselves as completely evil.
More Popular Spin-off: How the viewers see this show, as it doesn't revolve around a love triangle like the parent show (to be fair, The Vampire Diaries has dropped this starting in Season Five or so), and people tend to find the Originals more likable than the VD cast.
The Other Darrin: Of the other three Harvest girls, only Monique is played by the same actress when she's resurrected.
The show even managed to do this with The Originals, as they were a Base Breaker in the parent show. Now they're even eclipsing The Vampire Diaries in terms of popularity and likability.
Pretty much anyone who was a scrappy or a base breaker on The Vampire Diaries tends to get rescued once they jump ship over to The Originals.
Once her backstory and motivation for returning to New Orleans (a.k.a. being in the show) were revealed, the audience even began warming up to Camille. The fact that she is currently being used as a compulsion spy/mind puppet by Klaus may have also helped.
The Scrappy: Monique is by far the biggest one, mainly for killing her own aunt, Sophie. While the latter wasn't a popular character, people weren't happy to see her die like that. However, her attitude after coming back from the dead hasn't helped. She's shown no redeeming qualities and has spent most of her time antagonizing the Original family and bullying a fairly popular character. This has to be an intentional example; see Complete Monster for details.
Tyler has people wishing that he stayed in Mystic Falls. He's basically a Base Breaker for some people who believe that he has improved or is geared for improvement since his introduction. And it gets worse when he goes back to the parent show as his Scrappified self.
Sophie Deveraux is pretty hated too, primarily for her absolutely terrible actress who manages to overact (in terms of vocals and speech patterns) and underact (with her facial expressions and body language) at the exact same time, but killing Davina definitely made the hate even worse
Take That, Scrappy!: Monique's death in the Season One finale. Being killed by a thousand cuts is a pretty nasty way to go.
And funnily enough, they're paired together quite a bit in season 2 after Kol did come Back from the Dead.
Squick: While Marcel and Rebekah have chemistry, the fact that she helped raised Marcel since he was ten years old and then was about to have a very adult relationship with him when he reached adulthood makes it come off like this. It seems to border on incest between a favorite aunt and nephew...
Then there's the fact that Esther has chosen Cami's body to put Rebekah's soul into if she accepts Esther's offer, despite the fact that two Mikaelson brothers — Klaus and Finn — and Marcel clearly have feelings for Cami.