Kaylee Frye is a fictional character from the television series Firefly, created by Joss Whedon. She is portrayed by actress Jewel Staite and serves as the ship's mechanic aboard the spaceship Serenity. Known for her cheerful personality and mechanical skills, Kaylee is essential to the crew's operations and often brings a sense of optimism to their adventures. In addition to her technical expertise, Kaylee has a love for life and a fascination with the world around her. Her character embodies a blend of innocence and resilience, making her a beloved member of the Serenity crew. Kaylee's interactions with other characters highlight her loyalty and compassion, contributing to the show's enduring appeal.