Bertille Althusser is a prominent character in the anime series Walkure Romanze. She serves as a rival knight known for her strong sense of pride and competitive spirit. Bertille is a third-year student at Winford Academy and often participates in jousting tournaments, showcasing her skills and determination. Despite her fierce nature in competitions, she is also known for her noble and honorable demeanor. Her character adds depth to the series, providing challenges and growth opportunities for the protagonist and other characters.