At the end of GOF only a handful of people even know that Sirius is an animagus, let alone his loveable big doggie form. But by the beginning of OOTP we have Lucius Malfoy able to "recognize" Sirius by seeing the large black dog with Harry.
On the night of 6 June 1994, Remus Lupin stated that the Ministry "never knew that there used to be three unregistered Animagi running around Hogwarts", the three being his schoolmates Sirius Black, Peter Pettigrew and the late James Potter; Black's, Pettigrew's and Potter's Animagi nature was revealed by Remus Lupin ...
Draco, who implies that he is aware of how Sirius Black was supposedly involved in the deaths of Harry's parents, also taunts Harry about the impending threat of Black: "If it was me, I'd want revenge. I'd hunt him down myself."
Most notably, his first cousin Bellatrix Lestrange (née Black) considered herself Voldemort's most loyal servant. Her sister Narcissa (another of Sirius' first cousins) married Lucius Malfoy, himself a renowned Dark wizard instrumental to Voldemort's rise.
Yes, Snape did know who "Padfoot" was in "Harry Potter and the Order of the Phoenix." "Padfoot" was a nickname for Sirius Black, Harry Potter's godfather, who could transform into a black dog as an Animagus [3].
Why Dumbledore WANTED Sirius to ROT in Azkaban - Harry Potter Theory
Did Snape learn Sirius was innocent?
No, he didn't know. That's why Rowling specified that in Vold War One the Death Eaters were organised into cells, with each only knowing the identity of a few of the others. So Snape didn't know Pettigrew was a Death Eater, and he didn't know that Sirius wasn't one.
Yes, Snape knew. I would assume that, when Dumbledore recalled the Order, Lupin told the rest of them about Sirius's schoolboy nickname so that they could refer to him in company (as Harry does).
Draco's Patronus | Fandom. J.K. Rowling says Draco doesn't have a patronus because he never learned the spell but I think it's because he doesn't have any powerful happy memories to use.
Delphini was born in secret at Malfoy Manor in early March 1998 as the result of a liaison between Bellatrix Lestrange and Lord Voldemort. On 2 May 1998, both of her biological parents were killed in the Battle of Hogwarts.
And yet that's a fact that we all often seem to overlook. Draco's mother is Narcissa Black, which makes Draco Sirius' second cousin. So once again we find this family tree getting just a bit more complex and twisted.
When Lucius turns on Voldemort due to the reveal of his Horcruxes, Narcissa divorces him, taking 75% of Malfoy's wealth with her. Even her relationship with Draco is different, with POS-Narcissa only viewing Draco as a tool to further her own agenda.
Sirius is recognized for his unwavering loyalty and love for his friends and Harry. He loves Harry, and his affection is generous. He was devoted to James, Lily, Remus, Harry, Ron, Hermione, Gryffindor, and the Order.
Sirius Black proved he did not care about Remus. So of course, he would suspect him to be the traitor. Now, why would Remus Lupin suspect Sirius Black to be the traitor? Because he had already betrayed him once before.
McGonagall is a registered Animagus and can transform herself into a tabby cat at will. McGonagall was always held in high respect by her peers and students at Hogwarts and commanded a position second only to Dumbledore.
She placed Cedric's father Amos Diggory under a powerful Confundus Charm and made him think that she was his niece, despite neither Amos nor his wife having any siblings. When Amos was put into a nursing home for elderly Witches and Wizards, Delphi accompanied him and acted as his caretaker.
In the play "Harry Potter and the Cursed Child," which has become part of "Harry Potter" canon, it was revealed that Bellatrix conceived a child with none other than Lord Voldemort.
She meets young Albus Potter and leads him to believe she is the niece of Amos Diggory, and cousin to the long-dead Cedric Diggory. But in the play's third act, Delphi reveals herself to be the daughter of Voldemort and Bellatrix Lestrange.
Harry Potter had a few love interests during his time at Hogwarts. Though he eventually settled down with Ginny Weasley, he also had a thing for Cho Chang in his earlier school years. Then, of course, there's his secret love for Draco Malfoy…
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.
But what McGonagall doesn't know is that Snape is actually a double agent working for Dumbledore, so he has no intention of harming her. That being said, Snape holds back quite a bit. Many fans, however, like to speculate who would have won the duel had Snape given it his all.
