- Gillian Ossett: "Hi, Harry. I just love Wizard Chess. That's why I've collected so many chess pieces. Do you need any? I've got spare ones that I can swap."
- Harry Potter: "No, I don't want to swap with you"
- Gillian Ossett: "No problem, Harry. I'll be here later if you change your mind."
- — Harry Potter talk with Gillian Ossett in Defence Against the Dark Arts Classroom.[src]
Gillian Ossett was a Hufflepuff student at Hogwarts School of Witchcraft and Wizardry in the 1990s. As a lover of wizard chess, she collected chess pieces, and traded her extra ones with other students for various objects. She could usually be found in the Defence Against the Dark Arts classroom during the 1996-1997 school year.
- Harry Potter and the Prisoner of Azkaban (video game) (PS2 version only)
- Harry Potter and the Half-Blood Prince (video game) (NDS version only)