And the only reason the Dementors choose to follow Voldemort is because he frees them from their duty to Azkaban, allowing them access to the richer pickings on the mainland. It is a shame, perhaps, that Snape never elucidates his comment about there being a better spell to eliminate Dementors.
By June 1996, all of the Dementors of Azkaban collectively rebelled against their employers to join Lord Voldemort, who offered them more victims and free rein across the country. This aided the 1996 and 1997 escapes of Death Eaters from Azkaban.
From his rise to power, Voldemort is shown to have control over the Dementors, who hurt Harry particularly badly, at Azkaban and then throughout the Battle of Hogwarts. Voldemort doesn't have a full soul for the Dementors to take but the Death Eaters do which further confirms his control over them.
The Ministry was able to control the Dementors. They employed them as guards for their sole prison. The Dementors had the ability to hear, acknowledge and obey commands from wizards.
For a long while there was a uncomfortable allegiance between the Dementors and the British Ministry of Magic that employed them, but once the opportunity to really feed their appetites presented itself, they unsurprisingly defected and joined Voldemort.
How Dark Wizards like Voldemort CONTROL Dementors - Harry Potter Explained
Why did Dementors obey Voldemort?
And the only reason the Dementors choose to follow Voldemort is because he frees them from their duty to Azkaban, allowing them access to the richer pickings on the mainland.
Originally Answered: Were all Death Eaters Slytherin? Yes, with only two notable exceptions: Quirrel was a Ravenclaw, and that traitor Wormtail was a Gryffindor. And of course there were also Death Eaters in other schools, such as Durmstrang's Karkaroff.
Professor Lupin continued, 'The Patronus is a kind of positive force, a projection of the very things that the Dementor feeds upon – hope, happiness, the desire to survive – but it cannot feel despair, as real humans can, so the Dementors can't hurt it.
Dementors are born when there is so much pain and suffer in the air that it can materialise it's self. That means that most Dementors were created during the First and Second wizarding war or in the time of Grinwald's attacks in Europe. That's why Dementors can only be destroyed by the Patronum summoning charm.
Voldemort *cannot* cast the Patronus Charm because, as he says in “Goblet of Fire,” Dementors are his and the Death Eaters' natural allies. Dark witches and wizards cannot produce a Patronus.
The "most faithful servant" is Barty Crouch Jr., who has already been in place at Hogwarts working for Voldemort. The three dead include Evan Rosier, Wilkes, and Regulus Black.
Until his death, Snape played an impeccable double agent. He was one of Voldemort's most trusted servants towards the end. Voldemort's respect for Snape might mean that by ordering Nagini to be the one who killed Snape, the Dark Wizard was secretly hoping he survived the attack.
Harry Potter was particularly affected by the Dementors due to the murder of his parents, to which his teacher, Professor Lupin, assured him was "nothing to do with weakness", and that "the Dementors affect you worse than the others because there are horrors in your past that the others don't have."
Dumbledore's lack of belief that Sirius is innocent is also suspect. Sirius was a member of the Order of the Phoenix which fought against Death Eaters, but Sirius also was as close to James as a brother, the Potters even took him in when he ran away from home.
However, Dark witches and wizards would generally not try to produce a Patronus at all, not having any need for one. Most such men and women, who became desensitised to the effects of the Dark creatures whom they may ally themselves with, regarded the Patronus not being necessary to know.
they come from Azkaban, which wasent originally a prison, but a fortress build by an old "science" dark wizard (Ekrizdis). It states online that "dementors are born where there is so much pain and suffer in the air that it can materialise it self".
No one has ever demonstrated the ability to kill a Dementor, implying that they can not be killed through physical means, but can only be driven away or temporarily kept at bay.
You'll just -- exist. As an empty shell. And your soul is gone forever...lost." The Dementor's Kiss is the act of a Dementor sucking out a person's soul.
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.
They sought to save Cedric and created an alternate timeline where Cedric survived and became part of the Death Eaters, because of the humiliation they caused him when they tried to save his life. Cedric's original and heroic life and death was later restored.
