If there was a group in the Harry Potter universe that is the exact opposite of the Death Eaters, it would have to be the Order of the Phoenix, led by Albus Dumbledore. The Order of the Phoenix's main goal was to stop Voldemort, and by extension, his Death Eaters, at all costs.
Nearly all of those recruited were from Slytherin House. However there may have been recruits from Gryffindor, Ravenclaw, and even from foreign schools within the ranks as well. There were presumably no Hufflepuff Death Eaters (Hufflepuff House boasted of being the only house never to produce any Dark Wizards).
There are a total of 31 Death Eaters who have been named, although only two of them are women.
In the world of Harry Potter as we know it, there are no recorded instances of a person who was sorted into Hufflepuff ever becoming a Death Eater, or any other kind of Dark Wizard for that matter.
Most Death Eaters (aside from the Lestranges, Malfoys, Snape and Pettigrew) have unconfirmed houses, but there is one pseudo-death eater; Quirinus Quirrel, Ravenclaw, a guy who had Voldemort living behind his head for an entire school year.
Due to his humiliation in the Triwizard Tournament, Cedric eventually becomes a Death Eater and kills Neville Longbottom. Due to Neville's death, the final Horcrux Nagini was never destroyed, and as a result Voldemort is never defeated, kills Harry and takes over the Wizarding World.
She married Rodolphus Lestrange after leaving Hogwarts "because it was expected of her" to marry a pure-blood. However, Rowling stated in an interview that Bellatrix truly loved Voldemort.
No, Alecto Carrow is also a female death eater.
Draco had several reasons for lying to Bellatrix, including the fact that he was never a bad person. Moreover, he no longer found working for the Dark Lord appealing and hated how Voldemort treated his family. He did not intend to harm anyone and believed Harry was the only person capable of defeating Voldemort.
The most likely reason why Lord Voldemort's nose disappeared and he devolved into such an evil-looking creature is that as he dabbled deeper into the Dark Arts, his appearance gradually became as distorted as what remained of his twisted soul.
6 Bellatrix Lestrange
When Voldemort first lost his power, Bellatrix never sold him out, instead taking a life sentence in Azkaban. Upon her rescue, Bellatrix, now immensely more insane due to her stay in Azkaban, was seen as the most loyal Death Eater.
Peter Pettigrew
Wormtail) is the only Death Eater known to have been in a House other than Slytherin (Gryffindor) while at Hogwarts. There, he was a close friend of Sirius Black, James Potter, and Remus Lupin, although he was the least intelligent and least talented of the group.
Worst: Lucius Malfoy
Lucius Malfoy is pretty clearly a bad person, but he's a perfect example of how banal cruelty and evilness can be. Lucius likes to control, humiliate, and cause people pain, but he's also too weak and self-absorbed to really become one of the evil "greats," so to speak.
As was probably expected, Peter Pettigrew takes first place as the evilest Gryffindor, having betrayed some of his best friends to a mass murderer and framed another one for their murder. Peter is the proof that evil can truly come from any house, and is not limited to those from Slytherin.
When was Bellatrix Lestrange pregnant with Voldemort's child? So we all know by now that Delphi Diggory ain't Delphi Diggory. Nope, she's the child of Voldemort and Bellatrix Lestrange, who was born at Malfoy Manor just before the Battle of Hogwarts.
Bellatrix used a powerful "love potion" on Voldemort and they have sex while he is temporarily obsessed with her. She then uses obliviate on him while he sleeps (you know, he falls asleep after his post-sex cigarette) and tells everyone that the baby is her and her husband's.
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.
His reaction to Bella's death was akin to his reaction at the loss of the Cup, which was when he realised that his own immortality was jeopardised amidst war and his own death could have been near.
Delphi was conceived from a liaison between Voldemort and Bellatrix. She was born at Malfoy Manor, shortly before the 1998 Battle of Hogwarts. As Bellatrix and Voldemort were both killed in the Battle and Bellatrix's husband Rodolphus was imprisoned at Azkaban, Delphi was raised by Euphemia Rowle, a Death Eater.
Cecilia was a young, pretty Muggle woman who seemed to have been romantically involved with Tom Riddle Senior prior to his marriage to Merope Gaunt.
The advantage of nonverbal casting is that you don't relay any info to your opponent. If you start shouting an incantation, the opponent has a split second to parry your spell or block it using a specific counterspell. The Avada Kedavra curse, however, cannot be blocked, so you gain nothing by casting it non-verbally.
On a second trip back to 1995, Scorpio and Albus inadvertently humiliate Cedric with an engorgement spell that puts him out of the running for the cup.
Seething with fury at his humiliation, Cedric ended up joining the Death Eaters come Voldemort's return. As a result, during the Battle of Hogwarts, Cedric Diggory killed Neville Longbottom before he could destroy Nagini, thus keeping Voldemort immortal and allowing him to kill Harry Potter.