Another aspect of the charm not shown in the movie is whether Hermione reverses it. In the Harry Potter book series, it's clear that Hermione finds her parents and undoes the magic. Additionally, author J.K. Rowling stated in a webchat that, “Yes, she brought them home straight away.”
According to The Leaky Cauldron, when a fan asked if Hermione made sure that her parents could remember her again, Rowling said, "she brought them home straight away." This is good news, as it's awful to imagine Hermione's parents never remembering who she is or ever seeing her again.
While it may be possible to retrieve those memories (although not guaranteed), if cast by a powerful and intelligent witch like Hermione, Obliviate would remove the memories permanently.
Although there is no known spell which counteracts the effects of the Memory Charm, there is one seen within book canon which does have the opposite effect. If Obliviate removes a persons memories, then the opposite charm would be one which implants new (though not necessarily real) memories in a persons mind.
Several years later, however, Hermione was forced to alter her parents' memories and give them new identities as Wendell and Monica Wilkins, to protect them from the Death Eaters. After the Second Wizarding War ended, Hermione found Mrs Granger and her husband in Australia and returned their memories.
Her real parents were Daneel and Dean Novak, Pureblooded wizards. Turns out Daneel was Tom Riddles younger sister, Daneel Riddle. Of course, the Riddles were related to Salzar Slytherin himself, and this made Hermione the living heir of Slytherin. The problem with being a female Slytherin heir, is that they're cursed.
The Deathly Hallows Part I begins with a whole bunch of double-crossing and betrayals. Snape betrays the Order of the Phoenix. A guy from the Ministry of Magic becomes a Death Eater, which is probably how the Ministry ends up falling. And that's just the beginning of the movie.
You can't simply block it. Dumbledore would cast an object between or deflect it. The added advantage for dumbledore is with elder wand he can cast a powerful charm in-order to block it.
Avada Kedavra isn't an Unforgivable Curse because it's unblockable, it's Unforgivable because the ONLY purpose of the spell is to kill.
She made them have a desire to relocate to Australia, and so as Wendell and Monica, they left their life behind without being able to remember that they had a daughter. It was a difficult decision, but something that Hermione needed to do to keep her parents safe from Lord Voldemort and the Death Eaters.
Every scar fades in time, except the 'mudblood' carved on her arm by Bellatrix. We can assume it's a cursed scar and thus takes very very long to heal, say hundreds of years since we can't predict that it's permanent. What exactly was Fenrir Greyback going to do to Hermione in Deathly Hallows?
Bill is viciously mauled by the werewolf, Fenrir Greyback. Fortunately, as Fenrir was not transformed at the time, Bill did not become a werewolf, though Madam Pomfrey is unable to completely heal his face, and he remains permanently scarred.
So when Ron said three, it wasn't a mistake. He meant there were three more horcruxes to destroy before being able to destroy the fourth and final piece which was in fact Voldemort himself.
In the film adaptation of Harry Potter and the Deathly Hallows: Part 1, Snatcher Scabior can smell Hermione through their protective charms. Hermione told Harry that she was wearing perfume, which is what he had smelt.
Mr and Mrs Granger – we're never told their first names – were introduced to the wizarding world in much the same way that most Muggles are: they received a letter from Hogwarts, which revealed their daughter to be a Muggle-born witch. According to Hermione, the news came as a surprise, but her parents were supportive.
Speak to Sebastian in the Undercroft after this and he'll teach you any Unforgivable Curses you have missed up to that point, including Avada Kedavra. It's worth learning the curse as doing so should have no negative outcome on the game's story.
Why didn t the Death Eaters use Avada Kedavra all the time? Firstly according to the fake Moody Avada Kedavra (AK) requires a powerful magic. Therefore using it repeatedly would be magically - and perhaps even physically - very draining. Secondly Death Eaters don't always want/need to kill their targets.
Phoenixes were semi-protected from the Killing Curse, due to them being immortal. In 1996, Fawkes swallowed one intended for Albus Dumbledore, causing him to burst into flame and die instantly. However, he then was reborn from his ashes. This makes phoenixes resistant to the Killing Curse.
In order to conjure the avada kedavra curse, you have to want to kill your victim. We all know that Voldemort could easily kill a child without an ounce of remorse... but not Snape. Snape didn't want to kill Dumbledore, and this was why the spell was blue instead of the usual green.
How Expelliarmus Beat Voldemort's Avada Kedavra - Harry Potter Explained - YouTube.
Hedwig's killer is not explicitly identified, so he/she may have appeared in other books, films or video games, but the only known appearance is Harry Potter and the Deathly Hallows and Harry Potter and the Deathly Hallows: Part 1. A popular fan theory based on book canon suggests that Snape may have killed Hedwig.
It transpired that Luna had been taken hostage by the Death Eaters, setting up Xenophilius as a potential informant while punishing him for his pro-Potter stance. Xenophilius was clearly terrified, which brought him to make an awful decision – trade Harry for Luna's life.
Both Lupin and Tonks die in combat, killed by Dolohov and Bellatrix Lestrange, respectively, leaving Teddy an orphan with Harry Potter as his godfather and Andromeda Tonks as his guardian. JK Rowling has since stated that she originally intended for both Lupin and Tonks to survive.