Teresa Beria is a supporting character in the anime series Seikon no Qwaser. She serves as a nun and caretaker at St. Mihailov Academy, where much of the series takes place. Teresa is known for her gentle, caring, and calm demeanor, often providing guidance and support to the main characters. Despite her reserved nature, she has a mysterious past and plays a crucial role in several story arcs, helping to protect students from danger and guiding them through difficult situations.