As Dolores Umbridge was a sadist who enjoyed torturing students, Filch could relate to this. Also, as Umbridge granted Filch permission to torture misbehaving students, whereas Dumbledore would never even think of such things, he had loyalty to her. He is the only person who liked her at the school.
He apparently realised the Ministry of Magic was going to interfere at Hogwarts that school year, and clapped enthusiastically. Umbridge was a sadistic woman who, like Filch, enjoyed torturing and punishing students. Thus, the caretaker started to support Umbridge and follow her orders.
Decades of being around wizard students who reminded him of his inability to produce magic made Filch a bitter man who enjoyed punishing students, almost as revenge for his shortcomings. Dumbledore hired Filch as the Hogwarts caretaker, back in 1968.
The confusion for audience members who have only watched the movies lies in Filch's dialect; although “ma'am” rhymes with “ham” in Standard American English, in some dialects of British English is rhymes with “farm.” Furthermore in some dialects of British English “r”s are deleted, so that pronouncing “ma'am” to sound ...
Harry describes Umbridge to Sirius Black, saying that she's vile enough to be a Death Eater, despite not being one. Umbridge is also depicted to be a prejudiced person, despising half-breeds and Muggle-born witches and wizards to the point of firing Hagrid due to his half-giant birth status.
The Harry Potter movies seem to have started this idea, since in Harry Potter and the Deathly Hallows, Filch called McGonagall "ma'am," and some audiences thought he had said "mom." Of course, there has never been any indication that these two were related.
He married Isobel Ross, a Hogwarts-educated witch and had several children: Minerva, their oldest child and only daughter, and two younger sons, Malcolm and Robert Jnr.
Mrs. Norris' looming presence in the Harry Potter series is far too magical for her to be an ordinary cat, and there's enough evidence to support a theory that she's a Maledictus like Nagini. Filch's nosy cat appears all throughout the book series and occasionally in the films.
Some children were revealed as late-bloomers rather than Squibs, such as Neville Longbottom, but for others (such as school caretaker Argus Filch) their magic would simply never materialise, which could be hard to accept.
McGonagall was born a half-blood witch as her father was a Muggle and her mother a witch. McGonagall began her Hogwarts education at the age of eleven and was sorted into Gryffindor after being the longest ever Hatstall between Gryffindor and Ravenclaw.
The only staff member who supported Umbridge whole-heartedly was the caretaker, Argus Filch, who grew to like her methods, as well as being given permission to torture students himself. She later fired Gamekeeper Rubeus Hagrid, as he was a half-giant.
Hagrid was a pupil at Hogwarts himself and was learning magic along with everyone else - until one horrible day in his third year, when he was expelled (for reasons we discover later on in the series). Although he was able to stay on as gamekeeper, his wand was snapped in half.
Although Umbridge was not a Death Eater, and had no direct contact with Lord Voldemort, she showed that she was fairly in line with their goals. This was due to Umbridge's callous nature and her prejudiced beliefs, both of which were similar to Death Eater behavior.
However, Filch seems to have always had a desire to be part of the wizarding world, and perhaps never wanted to integrate into Muggle society. So someone, most likely Professor Dumbledore, felt sorry for him and offered him the job as Hogwarts caretaker so that he could still be part of the wizarding world.
However, like in the real world, some magical members of certain families or groups have biases toward those who do not conform to a "pure-blood" status, such as being Muggle-born, a Squib or, in the case of Rubeus Hagrid, a half-breed. This prejudice may have affected the Hagrid family in a myriad of ways, but Mr.
Apparently, Umbridge's mother was a Muggle and her brother was a Squib – a source of huge embarrassment for the family. Perhaps their abandonment and retreat back into the Muggle world had such a huge impact on Umbridge that it became the catalyst for her Muggleborn-targeted cruelty later on in life.
If you have only seen the films, you might be surprised to hear that it wasn't Cho Chang who betrayed Dumbledore's Army to Professor Umbridge – it was Marietta Edgecombe. A friend of Cho's and a fellow Ravenclaw, Marietta (reluctantly) joined the DA.
Well, in Umbridge's case, while she may have been working for the bad guys of bureaucracy, she was never under Voldemort's thumb. She was allied with the Death Eaters and definitely enabled them, she was never an official part of the organization.
↑ Severus died in 1998 without marrying nor having children, and his parents' fates are unknown. Aside from that, it's likely that his parents never had any other son or daughter as it's never mentioned if Severus had a brother or a sister.
Who became headmaster of Hogwarts after McGonagall?
Loyalty. Professor Marazion succeeded Minerva McGonagall in the post of Head of Hogwarts School of Witchcraft and Wizardry. This individual became Headmaster or Headmistress some time between 2008 and 2017 after Minerva McGonagall went into retirement as she was "getting on a bit".
The once shy and awkward Neville Longbottom showed his true bravery during the battle of Hogwarts and eventually became the head of Gryffindor House while also teaching new students Herbology, his favorite subject.
