His loyalty is matched only by fellow Death Eater Bellatrix Lestrange. Yaxley arrives with them at Grimmauld Place, allowing him to reveal their headquarters to the Death Eaters, but not to the location that the trio subsequently Apparate to. Pettigrew returns to the service of Voldemort, seeking him out in the forests of Albania and helping him to return to a feeble baby's body. Voldemort and Wormtail then attacked Bartemius and placed him under the Imperius curse; with Wormtail's help, Barty stunned and then impersonated Alastor Moody throughout Harry's fourth school year. Barty Crouch Jr.Alastor Moody (whilst disguised)
Note: Events in this subsection appear in a different order than they appear in the book. Dolohov and Yaxley are later sent to look for Harry, and they mistakenly thought the boy would not give himself up.
He abducts a Ministry of Magic employee named Bertha Jorkins, who is able to provide Voldemort with valuable information. Crouch was also perceptively observant; his keen attention to the habits and motivations of others enabled him to impersonate Alastor Moody so accurately that he even managed to fool Albus Dumbledore.[7].
In the sixth novel, Harry Potter and the Half-Blood Prince, Remus Lupin states that Karkaroff was found dead in a shack with the Dark Mark hovering over it, an indication that he was killed by other Death Eaters. He also apparently has an unpleasant history with Alastor Moody, and tries to avoid him unsuccessfully for the entirety of the tournament, not knowing that it is Barty Crouch Jr. in disguise. Because of the Ministry's refusal to remove the Dementors from Azkaban, which Dumbledore advised immediately following Voldemort's return, the Death Eaters recruited the Dementors to their cause and made similar progress with the giants; the Dementors' revolt against the Ministry of Magic also allowed the Death Eaters to bolster their ranks with the mass break-out of several imprisoned Death Eaters, including Bellatrix Lestrange. Voldemort, having regained his full strength at the end of Harry Potter and the Goblet of Fire, summoned his followers to him by touching Peter Pettigrew's Dark Mark.
Thorfinn Rowle | In Harry Potter and the Deathly Hallows – Part 1, Pettigrew is not strangled to death by his own silver hand in Malfoy Manor as in the book; he is instead struck by Dobby and collapses. A second, more deadly attack near the conclusion of Harry Potter and the Deathly Hallows resulted in over 50 deaths, including Voldemort, who died when the Killing Curse he threw at Harry rebounded on him.
[4] He is known as the most savage werewolf ever to live and is greatly feared throughout the wizarding world. He may have turned out to be evil at the end, but at first I believe it was for a different reason. His father, intent on catching Dark Wizards and becoming Minister for Magic, likely failed to pay enough attention to his son.
The Ministry rounded many of them up and imprisoned them in the Wizarding prison Azkaban, but some eluded justice by claiming they were bewitched by the Imperius Curse (it is implied that Lucius Malfoy did so) or by turning in other Death Eaters, as Igor Karkaroff did; Harry witnesses Karkaroff's testimony against former Death Eaters in Albus Dumbledore's Pensieve during the course of the series.