Some relate to Luna Lovegood but she is portrayed and meant to be veiwed as “weird” and “dreamy” as well as being the subject of bullying from her peers and people she thinks is friends.
In a flashback/memory it is shown that the antagonist's mother was abused by the two men she was living with. The men were her father and brother, but she was an adult, so I'm calling it domestic violence instead of child abuse. It's only one scene, and the protagonists talk about it afterwards. It shows physical and mental/emotional abuse.
Not successfully, but in 'Order of the Phoenix' a main character attempts to warn certain authority figures about the main antagonist.
A minor antagonist (who is an authority figure) insists that he's lying and forces the character to punish himself (involving repetition of a gaslighting phrase and scaring himself physically in a minor but visible way), and then insists that the character knows he deserves to be punished.
It's not gruesome, there's little to no blood, and the character has the emotional support of the rest of the cast to reaffirm what he knows to be true, but the scene exists.
Mrs. Norris is petrified, but she survives. The only other cats in the series are Crookshanks and arguably Professor McGonagall, a witch who can turn into a cat. Neither of them die.
Snakes are common both symbolically (snakes are the symbol of Slytherin, a student house within the wizarding school and its namesake, an ancient wizard who could speak to snakes) and as plot devices throughout the series. Aside from owls, which are common pets in the books that deliver mail, snakes are probably the most referenced type of animal over the course of the series.
No jokes that I remember but the love potion concept is rapey and this isn’t adequately acknowledged in-universe. In particular, Voldemort’s father leaving his wife for using a love potion on him seems to paint him as the one in the wrong.
Hermione has a jinx cast on her which causes her teeth to grow rapidly. When she has it reversed, she gets them shrunk to be slightly smaller than they were. There's also some discussion of her parents' work as dentists
the other comment is very random so clarification - it happenes in the chamber of secrets in chapter 7, i dont even know why "harry potter" exists on this site without referring to a specific book
She isn't trans, but as mentioned in "is someone misgendered," Rita Skeeter is referred to as "mannish." And JKR is infamously transphobic so good freaking luck trying to read the books knowing that.
In book 7, one of the henchpeople kills themselves and helps the protagonists escape. As a child I thought the henchman's magical body part did it without the henchperson's consent, but looking back as an adult, it was likely an impulsive suicide.
Frequently, mentally ill people are depicted as violent, even if unintentional, or dangerous. Remus is violent, he is specifically plural coded (DID/OSDD) and mentioned outright to be inspired by HIV/AIDS. He ends up not finding a way to control his turning into a were wolf but being ostracised from wizard society. Another werewolf specifically preys on children and wants to spread his werewolf virus to everyone. One character has a form of magic PTSD which makes her have uncontrollable episodes where her magic powers explode things. She ends up being the cause of her mothers death and implied to be the cause of her own death.
JRK describes fat people absolutely despicably. No matter what they eat, they are called gross. But thin characters can binge eat as much as they like with not a single mention of their body or previous meals.
Yes. Throughout the entire book series and movies. Every thing from hereditaranism to ablesim towards entire groups of people who happen to be born a certain way, to AIDS/HIV propaganda, to in-world and real-world slurs used. Disability is also seen as a curse. Ember Green did an amazing YouTube video discussing the ableism in this series.
No, but a minor antagonist, Rita Skeeter, is frequently referred to as "mannish". Also, the author is now notorious for her transphobic commentary on Twitter.
Nothing is explicitly said about Jewish people, but goblins (which are often considered to be antisemitic caricatures) are present and embody a lot of negative stereotypes.
No but there is homophobic and transphobic writing, as well as the author being a TERF. Remus is violent, he is specifically plural coded (DID/OSDD) and mentioned outright to be inspired by HIV/AIDS. He ends up not finding a way to control his turning into a werewolf problem but being ostracised from wizard society. Another werewolf specifically preys on children and wants to spread his werewolf virus to everyone.
Yes, but only in the background cast. Many purebloods (like the Malfoys, Lestranges, etc.) are stated to marry their cousins a lot, to keep their blood "pure" (and probably keep their wealth in the family). But the main cast is free of incest, and no incestious relationships are put in the spotlight.