Erwin

Tank commander and radio operator. Although she plays a central role in her team, it is Caesar who attends meetings like the Oarai Team Leadership Council. She has short, blonde hair. She is knowledgeable about European military history and wears a marshal's tropical uniform from the German Army Africa Corps over her regular uniform, along with British Army goggles and a hat modeled after those worn by German Army generals and marshals, giving her an appearance reminiscent of the "Desert Fox." When she first boarded the tank, she scolded the other members who commented on the "non-rotating turret" and "elephant-like appearance," insisting they apologize to the Finns since it was a tank that performed excellently in the Winter War. She gets along well with Yukari, who named her soul name "Guderian." In the manga, along with Ayumi from first year, they join as temporary members and serve as loaders and radio operators on the Renault B1bis during the match against Pravda and also go on reconnaissance missions together. She appears frequently in the series.