Rue the Weredeer

Rue is Santa's helper aiding Santa to deliver gifts all around the world on Christmas. She's a weredeer, a deer human existed since ancient times. She is by herself after poachers slaughtered her family when she was young. She possesses a wild instinct and exceptional physical prowess, and also has a special ability sealed under her name given by her family. Usually she uses her alias and hides her real name. Santa is the only one knowing her real name as of now. She's a bit gloomy and cynical. And sometimes cold and indifferent. However, when it comes to fixing Santa's problem, she's fierce and passionate. She would burn down the entire house to frighten the mouse. She is skillful in using explosives and huge weaponry, and also very adept in steering giant gears such as dump trucks and aircrafts with her "instinctive knack." There's even a famous anecdote. The day Santa bought the gift-delivery aircraft because the sleigh was too cold, Rue lifted it off the aircraft with no problem. Confounded Santa asked, "When did you get a pilot's license?" and Rue answered, "I didn't." Santa slapped Rue's back, telling her to go get one, so Rue did as Santa said: the very next day she got the Tetis special pilot's license on her first try.