Riruka Dokugamine is a Fullbringer. She has magenta eyes and long hair styled into two pigtails with a light-colored hat that resembles rabbit's ears. Riruka is confident and playful, but can also be hot-tempered and impatient. She is talkative and self-centered with a deep-seated belief in the "Survival of the Fittest." Despite suffering from extreme myopia, she avoids wearing glasses or contact lenses due to vanity. She wears a dark dress with white fabric over her breasts.