Fiona Shaw as Petunia Dursley – Then
Petunia Dursley, the muggle-born sister of Lily Potter, became Harry Potter's legal guardian after the death of Lily and James Potter. Petunia, her husband Vernon, and son Dudley subjected Harry to neglect and mistreatment, making him their de facto housekeeper and even forcing him to sleep in the cupboard under the stairs.
When Rubeus Hagrid arrives to deliver Harry's acceptance letter to Hogwarts, Petunia reacts with anger and fear, revealing Harry's magical heritage and the truth about his parents' death. Subsequently, Petunia and her family fled their home to escape Voldemort's threat.
