Erna Braun is one of the main female characters in the anime and light novel series 'Spy Kyoushitsu' (Spy Classroom). She is a student and member of Lamplight, a team of young spies undergoing training for impossible missions. Known for her reserved and shy nature, Erna struggles with self-confidence but gradually develops her skills and courage throughout the story. Her unique abilities and growth make her an essential member of the group, contributing to the team's dynamic and mission success.