Jajka is the main commander Bonple High School tankathlon Sensha-do team and an angry and insecure Polish girl. Jajka commands a Polish 7TP light tank and is insecure about her face, hence why she wears a lot of makeup. She loves cooking żurek, a soup with soured rye flour and meat. Jajka hates Pravda and their commander Katyusha because Bonple suffered a humiliating defeat because of them. Jajka's friends are Uszka and Maiko. Pravda has used 17 T-70 light tanks against them in the match.