for Crouch Sr. During the festivities, Crouch Jr steals Harry's wand from his pocket and later uses it to conjure the Dark Mark, in spite of Winky's attempts to stop him. In the resulting chaos, Harry and his friends see Winky running into the forest, struggling as she tries to restrain the invisible Crouch Jr. Later she is caught by Amos Diggory with Harry's wand, which is established through a priori incantatem to have been the wand used to conjure the Dark Mark; though Crouch Sr. realises what happened, he agrees with the apparent conclusion that Winky conjured the mark, and fires her on the spot, both to save face and as punishment for her failure to control Crouch Jr. Following her dismissal, Dobby takes the distraught Winky to work with him at Hogwarts. There the unhappy Winky, retaining her loyalty to Crouch, becomes an alcoholic until the final book, and eventually fights in the Battle of Hogwarts with the other house-elves. The Weasleys' creatures Many pets and animals are associated with the Weasley family: Scabbers – a brown rat retained for twelve years; at first by Percy, but passed to Ron. Near the end of the third book, Scabbers is revealed to be Peter Pettigrew, an Animagus whose betrayal of James and Lily Potter led to their deaths at the hand of Lord Voldemort. Pigwidgeon (nicknamed "Pig") – Ron's hyperactive scops owl, a gift from Sirius Black upon the loss of Scabbers. Hermes – a screech owl owned by Percy, which was a gift to him from his parents for becoming a Prefect in his fifth year. He is named after the Greek god Hermes. Errol – an aged great grey owl who serves as the family's courier. He has trouble carrying loads and is often found unconscious after collision or exhaustion. Possibly a reference to Errol Fuller, who wrote a few books on extinct birds. Arnold – a purple Pygmy Puff (miniature puffskein) owned by Ginny and obtained from Weasleys' Wizard Wheezes in the sixth book. A puffskein belonging to Ron and killed by Fred when he used it for Bludger practice, revealed in the first Harry Potter game, and later confirmed in Fantastic Beasts and Where to Find Them. A benevolent ghoul lives in the attic of The Burrow and causes minor disruptions by groaning and banging on the walls and pipes. In Deathly Hallows, the ghoul