Pei Yi was a dancer of the Human species, a female in a dance company that was not widely recognized.
To travel to the planet of Naboo for an important performance with her fellow dancers, she contracted the services of the freelance pilot Diskret Stahn for transportation. During their journey, pirate forces attacked Stahn's ship, resulting in damage and an emergency landing on Mustafar for necessary repairs and provisions. Consequently, she was unable to perform on Naboo and found herself stuck with Stahn at the Mensix Mining Facility for an extended duration.
Pei Yi was featured as a NPC within the Star Wars Galaxies video game, a massively multiplayer online role-playing game created by Sony and distributed by LucasArts, before the game's servers were shut down on December 15, 2011.