Patronus

A Patronus is a magical shield or protector in the Harry Potter series created by author J.K. Rowling. It takes the form of an animal and is conjured using a casting spell known as "Expecto Patronum." The Patronus represents the positive emotions and memories of the caster, particularly joy, love, or hope, and is used to ward off Dementors—dark creatures that feed on happiness. Each person's Patronus is unique, often reflecting their personality or inner strength. The Patronus serves as a symbol of resilience and the power of good against fear and despair.