Rio Isuzu is the general manager and chief manager of the voice acting agency AiRBLUE. Her surname, Isuzu, combines the kanji for "fifty" and "bell," while her given name, Rio, is written in hiragana. It can be interpreted through various kanji, such as those meaning "white jasmine" and "center," "white jasmine" and "thread," or "village" and "cherry blossom." She stands 1.51 meters tall with dark pink hair and grey eyes. Her blood type is B, and her birthday is May 4th.