Seat Number: 12
Birthdate: March 16, 1989
Blood Type: A
Hair: Blonde
Eyes: Green
Likes: Training, strong men , Nikuman (a type of Chinese bun containing meat)
Hates: Chao and the professor's new inventions (this appears to be a reference to a sonic game)
Clubs: Chinese Martial Arts Research Society

An energetic, cheerful Chinese girl with very good motor nerves, as well as skilled in Chinese martial arts. Her specialties are Xingyi Quan and Bagua Zhang, though she knows a little Baji Quan and Xinyi Liuhe Zhang as well. Since she won the Mahora Academy Martial Arts Tournament, every morning there's a big crowd challenging her (which she beats them up Akane Tendo style). After the Kyoto trip in volume 6, Negi begins training with her daily, where they share a master-student relationship.

However, much like Asuna and Kaede, Ku Fei's skills as a fighter are far superior to her performance in Negi's class. She is known as Baka Yellow of the Baka Rangers, a title given to the five worst students in Negi's class. (Her bad results mainly stem from her inability to learn Japanese properly, often speaking in broken Japanese.)

According to Ken Akamatsu, if Setsuna, Kaede, Mana and Kuu Fei (i.e. the "members" of the 3A Martial Arts Elite Four) were to fight without holding back, Kuu Fei would be the weakest among the four, though this is only because she uses no magic, but pure martial arts.

In chapter 261, Ku Fei makes a Pactio with Negi, but only on the grounds that he beat her in an arm-wrestling match. At first he has difficulty doing so, but ends up winning in the end. She is the 10th student in Negi's class to form a Pactio with him. Her artifact is an extending pole, much like Son Goku's pole from "Journey to the West," and can also alter it's size and the speed of its extension.