**Occupation:** Spy **Affiliation:** Lamplight **Skills:** She is skilled in disguises, and can even disguise herself as a man without being detected. Grete is one of the main protagonists in the Spy Classroom series. She was the daughter of a politician but for some reason, she was forced out of her birthplace, and she seems to have decided to become a spy. Although she has an excellent brain, she has a deep-rooted distaste for men.