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.
Nina Martin was sometimes seen as an abusive Jerk Ass to her friends and Fabian, because of how often she would yell at or push her friends around, and these people also tend to see her as a Karma Houdini, because of how she was never called out on what she did. There are also debates as to whether or not her absence in season 3 improved the show, or worsened it. She as also been guilty of being called a Mary Sue, due to her Chosen One status, the way that the show usually paints her as being in the right even when she acts like a jerk, and how she would often have to be saved by her True Companions (usually Fabian), yet never had to really fight for herself before.
On the other hand, Nina fans tended to paint Joy as a Jerk Ass instead, due to the way she was obsessed with winning Fabian's affections, which of course meant hurting Nina. By the time she tricked Fabian into kissing her, a large portion of the fandom had made her The Scrappy. There is also another camp that believe that she was always a sympathetic character who actually deserved Fabian more than Nina did, and saw her actions as cries for attention more than anything else.
In season 3, was Mara a sympathetic Jerkass Woobie or a formerly sympathetic character who Took a Level in Jerkass and had no right to do what she did to Joy and Jerome? Much of the fandom seemed to lean to the latter, but there are still people who believe the former.
Base Breaker: Nina and Joy. The fanbase is pretty divided with a significant portion really hating Joy and quite a few Nina-haters as well. Most of the fans are still Fabina shippers though.
Broken Base: For some season 3 due to Nina leaving due to a major case of Real Life Writes the Plot because the main lead had to leave the show and these fans were either diehard Fabina shippers or they just didn't like KT. Most of the fanbase seemed to be okay with these changes though. However, with the recent revelation of the current storyline possibly being wrapped up in a 90-minute movie with "series finale" written over it instead of a full fourth season, and the fourth season, if it gets renewed will potentially remove the entire cast due to the movie possibly being the end of their story arc has this trope in full force. The fact that Nina and Amber are confirmed to be not returning ever makes the backlash even worse.
Cargo Ship: A couple, but the most popular is Victor/Corbierre—Corbierre being his dead, stuffed raven. Who he talks to as if it is alive and even panicked when Fabian 'kidnapped' it. It's no wonder many people like shipping it.
Die for Our Ship: Joy got hit with his hard during the second season, being the opposition to the Fan-Preferred Couple of Fabian and Nina. It didn't help that she had plenty of Jerk Ass tendencies during this time as well, but thankfully by the third season she got over Fabian and dropped many of her meaner qualities, redeeming her in the eyes of many fans. Oddly enough most other rivals of Fabina and Nina's pairing did not suffer this, probably because the fans were too busy shipping them in their own pairings to care, and the other rival pairing were not large enough- or Canon enough- to matter.
Mara had also gotten this for being on the wrong end of two pairings- Joy and Jerome, and Nina and Fabian. In the first case, she let her desire for revenge turn her into a Jerk Ass who was seen as bullying both Joy and Jerome- Jerome by continuously trying to humiliate him in progressively worse ways, Joy by forcing her to pretend to like Jerome, only to break his heart later, and turning against her for developing actual feelings for Jerome. On the Fabian and Nina side, it's simply because, despite Nina's absence during the third season, Fabian and Nina were still one of the most popular pairings, and the way Mara and Fabian got together was seen by a classic example of Strangled by the Red String.
Jason, by a lot. Despite being a teacher and one of the secondary characters, when he didn't come back after Season 1, many fans were and are still begging and waiting for his return, probably making him one of the most loved characters in the show. This might have something to do with his 'relationship' with Patricia.
Fan-Preferred Couple: The fandom fell for the UST filled Nina and Fabian early on, and shipped them ravenously in the following seasons, even after Nina had left the show. Helps that they also became an Official Couple at the end of Season 1, and then again at the end of Season 2.
At the end of the first season, many fans seemed to like the idea of the pairings being Nina/Fabian, Amber/Alfie, Mara/Mick and Patricia/Jerome, which paired everyone except Joy (who, as a result, would be paired with future character Eddie), and was basically how things ended at the end of that season anyways. By the second season however, things became much more complicated in the shipping world...
Fix Fic: Due to a controversial cast change that wrote out the main character due to Real Life Writes the Plot, House of Anubis has a lot of fanfics revolving around season 3 that has Nina Martin either return in a rewrite of season 3 (she had to leave the show due as the actress was suffering from Real Life Writes the Plot complications) or return for a fan-imagined season 4, or reunite with Fabian in a Distant Finale years later and get back together again. Unsurprisingly, most of these fics were written by Nina/Fabian shippers that wanted them to stay together. There are also fics that make Eddie/Patricia stays together for the whole of season 3 instead of breaking up early in the season.
Fridge Brilliance: After the identity of the Osirion is revealed, it kind of makes sense that The Chosen One and her guardian would both be from the same country.
"The Chosen One and the Osiron can't be in the same place, or terrible things will happen". Real Life Writes the Plot or otherwise, it makes sense when you consider that Nina and Eddie spent all of Season 2 in the same school: Senkhara showed up days after he arrived... and she nearly succeeded in the end!
Holy Shit Quotient: We all expected mythical and downright strange things to happen as our heroes slowly solve the mysteries, as well as drama. But when Nina falls down a very long pit because of Season 2's mysterious spirit, ending on a cliffhanger... well...
It might be safe to say that Season 2 took a level in this when compared to Season 1. We have Senkhara's Reality Warper powers, the first actual on-screen death for Rufus, the Nightmare Fuel as mentioned above...
And now more than halfway through Season 3, we have Victor who is a sinner at the time set up a variant of an actual guillotine, which sliced through a book with ease.
Jerkass Woobie: Everyone has their moments, however a few people stand out.
For starters, you have Patricia Williamson. She did some pretty nasty things, such as the fake initiation for Nina, complete with locking her in the attic, throwing away the key, and nearly getting her in trouble with Victor twice. However, she was also the one who was desperate to save her best friend, Joy, when everyone else was willing to just forget about her; she was betrayed by nearly everyone she trusted before Sibuna came along; kidnapped by a person she had rescued just a few episodes before...and that's just scratching the surface.
Joy Mercer. Oh, poor Joy. She's been relentless in trying to attract Fabian's attention, and wrote an incredibly nasty article in the school paper trying to get Nina to leave. But there's no denying her life is a MESS- kidnapped by her father just for it to turn out that she was not the Chosen One, coming back just to realize Nina basically took her place in the house, ignored by Sibuna even when she wasn't doing bad things...
Launcher of a Thousand Ships: It seems agreed on by much of the fandom that Patricia makes a good pairing with virtually every other student in the house, regardless of gender. (And one teacher.) While they can be platonic most of them are viewed as romantic.
Moral Event Horizon: For Rufus, it's when he traps the students in the school, threatening to kill them with an extremely painful death if the Society doesn't hand over the Cup Of Ankh and The Chosen One.
For Senkhara, it was cursing Nina's grandmother. She had also been revealed to had murdered King Tut while she was still living...
In the third season, Miss Denby does a lot of horrible things. Two contenders are:
When she tricks Patricia into thinking Eddie was cheating on her, causing Patricia to break down in tears for the first time on the show, and then turning her into a sinner—and according to Eddie's vision, it involved a lot of dragging and fighting to get her in the coffin.
Drugging her own, kind of crazy adoptive sister, keeping her locked in the basement and stealing her title as "The Keeper", which caused Robert Frobisher-Smythe to wake up evil.
Victor, despite having been a sympathetic Anti-Villain in the other seasons, crossed this when he set up a guillotine to stop the students from getting into the secret room. He tested it by having it cut a dictionary in half. And he was very pleased with this. Of course, he was a sinner at this time, so it does make a bit of sense. But it's the first time he's ever shown willingness to murder the students, a jarring change from his former Even Evil Has Standards trait.
To squee or not to squee? SQUEE! explanation A popular quote from Willow.
Falls out of his/her chair in amazement. explanation One of Alfie's most popular quotes
You have five minutes precisely, tropers, and then I shall want to hear a pin drop. explanation Victor's famous catchphrase.
Moy Castle explanation Moy is the name for the pairing of Joy and Mick. Some fans searched it up and discovered there is a Moy Castle in England, leading to the idea of Mick and Joy being the rulers of Moy castle, with Alfie as the jester, and all the shippers living there too.
Rescued from the Scrappy Heap: Joy Mercer was originally the show's scrappy, as she was in love with one half of the show's most popular pairing. Later she did do some pretty bad things, and earned the title for real even among other characters in the show- however, in the end of season 2 she took a lightning bolt for Fabian and nearly died in the process. Now in season 3 Joy gave herself a new look, a new attitude, a new crush, and has become one of the most liked characters on the show.
Ship Sinking: The pairing of Joy and Fabian seemed to be doomed to be the Titanic. No matter how much Joy tried, Fabian kept rejecting her advances as he loved Nina. Then Joy went kind of crazy to get his attention and temporarily became the most hated person in the house and arguably to viewers of the showas well for the duration of season 2. In season three, when Nina was finally out of the way, she still got rejected and Fabian didn't even attempt to sugar coat it. So, basically, if you shipped Joy and Fabian, there was really no chance to set sail. Which is alright, with the addition of Joy and Jerome's pairing, which is wildly popular and has managed to stay afloat.
The Scrappy: It seems like the writers simply decided to make one of the characters hated by the fandom each season just to rescue them at the end of the season. Of course, these characters are also usually base breakers depending on your point of view.
Joy Mercer got this status during season 2 for loving one half of the a very popular Official Couple, to the point where she is somehow blamed for a break up she had nothing to do with. She was hated even before she had done anything wrong. When she started playing dirty tricks for both Fabian's heart and to win the spotlight, and refusing to take the hint that Fabian was not interested in her romantically, even the fans she had were starting to lose sympathy for her, and the characters themselves were not pleased. Thankfully, in season 3 she had dropped many of her Jerk Ass traits, and reinvented herself as a person- and got involved in one of the most popular pairings of the season, effectively making her Rescued from the Scrappy Heap.
Mara seemed to be hated for a little while until the ending of Season 3 for her treatment of both Jerome and Joy. However, then she moved on to Fabian and ends up with her in Touchstone of Ra, essentially killing all hopes for an reunion for the Official Couple barring Nathalia returning for Season 4—-if there is one. This has led to many criticizing Mabian for being a textbook example of Pair the Spares and Strangled by the Red String and throwing more hate at her character. However there are also some who believe that Fabian should have moved on from Nina and support the new pairing. It doesn't help that Fabian and Mara almost never interacted in the series up till then.
Adding to this is that a portion of the fanbase view her as a Karma Houdini, thanks to never once being called out on anything she did to Joy or Jerome during the third season, and how she was redeemed way too quickly, which caused the bad taste to stay.
As for villains, there's Vera. She was despised for almost everything she did, including kidnapping Trudy, and she had barely any redeeming qualities. It also comes in part from her childish clothing style, and for flirting with Victor. It doesn't help that she, too, is considered a Karma Houdini. Miss Denby in Season 3 earned similar hate for the things she did, such as cruelly messing with Patricia's emotions just to turn her into a sinner, but at least she had a few redeeming qualities and was likable at first, and did earn karma at the end, making her less of a scrappy than Vera.
Suspiciously Similar Substitute: KT to Nina. Both are Americans who lived with elderly relatives before coming to Anubis House, both are set to solve a mystery having to do with the house, and both get on Patricia's bad side during their first day.
What an Idiot: In one Season 3 episode, the Big Bad of the season Robert Frobisher-Smythe was found in Fabian's room on the floor, dying and begging for Fabian's help.
You'd expect: Fabian to see through this obvious trick as he knows Frobisher-Smythe is evil, and abandon him in the room while he goes to get help.
Instead: Fabian agrees to help him, and takes Frobisher-Smythe to the gatehouse, where people are turned into sinners.
And then: Then, Frobisher-Smythe asks him to complete his research when he's dead. Fabian is delighted and agrees, seeming to forget completely that he's talking to the Big Bad...and then, Frobisher-Smythe ends up revealing his evil nature, and tricks Fabian into expressing the sin of pride, which of course gets Fabian turned into a sinner.
The Woobie: It is very hard not to feel bad for Nina in the second season. Not only was she dealing with a love triangle and had broken up with her boyfriend Fabian early in the season, but she and all her friends were cursed by an evil Egyptian spirit, as well as her grandmother (who she lived with, because her parents died when she was a child). If she failed in her quest to get the mask, her friends and grandmother would be killed. She did have some Jerk Ass moments, but it was hard not to sympathize for her when things continued getting worse and worse as the season went on.