Mundungus Fletcher was a wizard who dwelled in the Wizarding underworld, a dealer of stolen merchandise and controlled substances. He was also one of the original members of the
Mundungus was chosen by the Order to transfer Harry to Tonks's place (not the Burrow) because they thought that once Voldemort and his Death Eaters figured out they were using Polyjuice Potion, they would expect Harry to be with a powerful wizard like Moody or Lupin.
Xenophilius Lovegood betrays Harry in Harry Potter and the Deathly Hallows. The Death Eaters have Xenophilius' daughter, Luna.
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.
Xenophilius betrays them to the Death Eaters, hoping to free his daughter Luna, whom the Ministry has imprisoned, and they narrowly escape from his house. Harry is tempted to pursue the Hallows and abandon his quest for the Horcruxes.
Sirius Black, revealing this to Harry, said that Mundungus was heavily veiled and disguised as a witch because he had previously been barred from the Hog's Head, and admitted that Mundungus had been tailing Harry.
Bellatrix Lestrange (née Black) is the first female Death Eater introduced in the books. Aunt of Draco Malfoy and Nymphadora Tonks. She was introduced in Harry Potter and the Order of the Phoenix. She is the most faithful member of Voldemort's inner circle.
Harry Potter's Biggest Betrayal Makes No Sense. Peter Pettigrew was a member of the Marauders before he betrayed his friends in Harry Potter, but that choice makes no sense. Even more so than the magical elements, the Harry Potter franchise can be defined by its relationships.
The seven Potters are Harry himself, Hermione Granger, Ron Weasley, Fred Weasley, George Weasley, Fleur Delacour, and Mundungus Fletcher.
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.
According to the films, Hedwig's killer might have been Selwyn, who was known to be pursuing Harry and Hagrid at the time since Hedwig's death in the film happened quite a while into the fight when there was only a couple death eaters following them, or it might have been Stanley Shunpike under the Imperius Curse.
However, Mundungus appeared to be braver than people such as Peter Pettigrew. Though he had a tendency to flee when the situation seemed grim, he never actually turned against the Order of the Phoenix.
When Moody was killed by Lord Voldemort during the Battle of the Seven Potters, Harry was devastated by his death, as were the other Order of the Phoenix members.
He had good intentions, but Mundungus was a coward. For instance, during the Battle of the Seven Potters, he escaped from Voldemort in panic, which prompted the Dark Lord to kill Mad-Eye Moody. Although he was street-wise, Mundungus was definitely an untrustworthy teammate.
Lord Voldemort is the scariest villain in Harry Potter, if only because he is the series' overreaching villain who successfully evades death more than once.
Without a doubt, Dolores Umbridge is the most hated character in the Harry Potter universe. Her unnaturally calm and polite demeanor paired with her cruelty makes her incredibly irritating.
Barty Crouch Jr. Voldemort refers to him as his “most faithful servant.” I'd say the GOF mission overrides that.
Weakest: Stanley Shunpike
Originally, he was arrested for claiming to know inside information on them, even though he probably was joking. When Voldemort released his allies from Azkaban, he placed Shunpike under the Imperius Curse and made him a formal Death Eater.
Besides Dumbledore, he is also the only wizard ever known to be able to apparate silently. Voldemort was also said to fear one wizard alone, Dumbledore.
He did not love anyone, and did not care to be loved. He felt nothing for his family, and only wanted his friends in school to rally around him because he wanted to hold power over them. Bellatrix Lestrange was obviously in love with him and worshiped him, but he only cared for her servitude, not her.
I've always suspected Molly's lethal spell was a particularly well-placed and powerful stunner that stops Bellatrix's heart, which is consistent with the description of her death: Molly's curse soared beneath Bellatrix's outstretched arm and hit her squarely in the chest, directly over her heart.
Marietta Edgecombe's defection not only betrayed Dumbledore's Army, but ultimately doomed Harry and Cho Chang's relationship.
Why did Barty Crouch Jr try to help Harry when he was pretending to be Mad Eye Moody? Because he needed to. Barty's entire plan hinged on getting Harry into the Triwizard Tournament, through all three tasks, and then being the first to touch the Triwizard Cup, which has been turned into a Portkey.