Riruka's got the look of a young girl with long dark hair styled in two ponytails, topped off with a pale hat. She goes for a dark dress paired with tall dark boots that go well above the knee.
Personality-wise, she's hyperactive and tsundere as they come—constantly annoyed by basically everyone around her, though the other Fullbringers really get under her skin. Her tsundere side shows up all the time; she genuinely cares about Orihime, for instance, but would never admit it outright and usually hides it behind irritation.
Content compiled by AnimeList.moe from publicly available sources.