"Yuffie is mischievous, cocky, and rebellious, acting brash and aggressive. In the beginning, she only cares for the prospect of obtaining materia and earning money, to the point of double-crossing them and others to steal it. However, she is not averse to heroics, and later becomes a reliable ally and caring friend. Yuffie is brash and cocky, bestowing honorific titles onto herself, such as "the single white rose of Wutai, and provoking her opponents with insulting nicknames. She is usually bright and cheerful, adopting a playful attitude, though she struggles with motion sickness, both seasickness and airship sickness. During these times Yuffie seeks solace to suffer her affliction alone, though seems to enjoy encouragement and sympathy from Cloud who is likewise prone to motion sickness." - Final Fantasy Wiki

Voice Range: Mid to Mid-high. Should be on the younger side, since Yuffie is always depicted as being on the younger side. She's a bit of a troll, gremlin, even.