Harry's aunt and Lily's sister. A muggle, Petunia is terrified of magic and participated fully in Vernon's project of bullying Harry. She's horse-faced and extremely nosy; her favorite pastime is spying on the neighbors. When she hears about the hotline for Sirius Black on the news, Harry knows that calling the hotline would be her proudest moment.
Aunt Petunia Character Timeline in Harry Potter and the Prisoner of Azkaban
The timeline below shows where the character Aunt Petunia appears in Harry Potter and the Prisoner of Azkaban. The colored dots and icons indicate which themes are associated with that appearance.
...pointlessness of fourteenth-century witch hunts. As he works, he listens carefully for the Dursleys. Aunt Petunia, Uncle Vernon, and Dudley are Harry's only relatives, but they're non-magical people (muggles) and hate... (full context)
...for Incurably Criminal Boys. Harry, furious, feels that this is the worst birthday present ever. Petunia fusses over Dudley as Vernon heads for the door, but Harry has an idea. He... (full context)