Bartemius Crouch Junior is a Death Eater, and the son of Bartemius Crouch Sr.. He was imprisoned in Azkaban by his father, secretly freed and impersonated the retired Auror Alastor Moody to take his place as Defence Against the Dark Arts teacher at Hogwarts School of Witchcraft and Wizardry for a year, before becoming a victim of the Dementor's Kiss.
 Character development
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 Fourth book
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 Portrayals within films
 Outward appearance
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 Additional Canon
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