▪Name: Barty Crouch Junior
▪Height: 6ft 1"
▪Gender: Male
▪Hair Colour: Brown
▪Eye Colour: Brown
▪Species: Human
▪Homeplanet: Earth
▪Current Home:
▪Profession: Death Eater
▪Weapon of Choice: Wand
▪Blood: Pureblood

Bartemius "Barty" Crouch, Junior is a Death Eater who was captured with the Lestranges, who were responsible for torturing Frank and Alice Longbottom, parents of Neville Longbottom. His father, who headed the Department of Magical Law Enforcement at the time, sentenced him to life imprisonment in Azkaban. However, Crouch, Sr. later rescued his son as a favor to his dying wife. When they visited him in Azkaban, Mrs. Crouch used Polyjuice Potion to switch appearances with her son, enabling him to escape while she remained in his place. When she died, she was buried under his identity.

To prevent him from returning to Voldemort's service, Crouch's father controlled him with the Imperius Curse, and he was kept hidden under an invisibility cloak. Crouch was nursed back to health by Winky, the family's house-elf. When Bertha Jorkins discovered the truth, it reached Lord Voldemort, who rescued Crouch and put his father under the Imperius Curse. Crouch then kidnapped Mad-Eye Moody and, using Polyjuice Potion, assumed Moody's appearance and position as the new Defense Against the Dark Arts teacher to infiltrate Hogwarts. Crouch appeared to be smart enough to realize that he had to avoid deviating from behavior that the real Moody would demonstrate. Despite being an imposter, Crouch did a fair job of teaching the students; even student Dean Thomas said that "Moody" wasn't entirely sane, but the class still learned vast amounts from him.

Crouch, Sr. escaped and reached Hogwarts to tell Dumbledore about Voldemort's return, but he was exhausted and delirious. He was murdered by his son on the Hogwarts grounds. The revived Triwizard Tournament was held at Hogwarts, and Crouch was tasked with making sure Harry won. When Harry, along with Cedric Diggory, touched the Triwizard Cup, it transported them to a graveyard, via portkey. There, Cedric was killed and Harry's blood was used in a ritual to bring Lord Voldemort back to power. The plan succeeded, but Harry escaped.

When Harry returned to Hogwarts, Crouch, still under disguise, hoped to succeed where his master failed, but he also was unable to kill Harry, his plot foiled by Dumbledore, Snape, and McGonagall. Under the effect of Veritaserum, a powerful truth potion, he recounted his plan to them. Although he was closely guarded so he could later repeat his testimony, Minister of Magic Cornelius Fudge had Crouch's soul sucked out by a Dementor before being brought to trial, which prevented him from confirming Voldemort's return. He still lives, but few would dare to identify his present condition as "alive" — having no memories or sense of self.