Firefly (TV series)
Kaywinnit Lee "Kaylee" Frye, played by Jewel Staite, is the ship's mechanic. In the episode "Out of Gas", it is shown that she has no formal training. She keeps Serenity running with an intuitive gift for the workings of mechanical equipment. A very happy young woman, Kaylee has a romantic crush on Dr. Simon Tam. Kaylee's character is the soul of the ship: according to Joss Whedon, if Kaylee believes something, it is true.