"Paine (パイン, Pain) is a fictional character in the Final Fantasy series, and a main protagonist in Final Fantasy X-2.
Paine was drawn by Tetsuya Nomura, a common artist in the Final Fantasy series. She was voiced by Gwendoline Yeo and Megumi Toyoguchi in English and Japanese versions respectively. It was originally speculated by fans that the third playable character of Final Fantasy X-2 may be fellow Final Fantasy X characters Dona or Lulu, and it was believed that Paine and Lulu were one and the same due to their similar appearances. While Final Fantasy X characters Yuna and Rikku were planned as stars of X-2, she was created for X-2.
Paine is an 18 years old female who appears as a leading character in Final Fantasy X-2. She uses a sword for combat for she is prominently featured as a warrior. She has a sarcastic personality and can be very serious. Paine is easily irritated by those who seek to use Yuna rather than do things themselves. Paine was very sensitive about talking about her past, and was easily offended if Yuna or Rikku tried to pry. She also speaks the Al Bhed language."
Source: Wikipedia, "Characters_of_Final_Fantasy_X_and_X-2", available under the CC-BY-SA License.