鄧不利多的軍隊
Hermione later uses Polyjuice Potion to impersonate Bellatrix when the trio attempt to steal Hufflepuff's cup from Gringotts. She, Harry, and Ron join Dumbledore's Army in the Battle of Hogwarts, during which Hermione destroys Hufflepuff's cup in the Chamber of Secrets with a basilisk fang, eliminating another Horcrux. Hermione and Ron also share their first kiss during the battle. In the final battle in the Great Hall, Hermione fights Bellatrix with the help of Ginny Weasley and Luna. However, the three of them are unable to defeat Bellatrix and stop fighting her once Molly Weasley orders them to disengage.