Ja'inn was a female Twi'lek who lived in Coronet City, on the planet Corellia, during the Galactic Civil War. In 1 ABY, one of her contacts, the Bothan smuggler Moril, was hired to deliver odd items to a group that he couldn't name. Moril refused to give her any details, displayed a very strange behavior, and even looked terrified. Ja'inn was worried about the Bothan and therefore reported this discussion to Lieutenant Joth of the Corellian Security Force. Joth thus sent a spacer to interrogate Moril. This led to the discovery of an illegal lab by the CorSec, a lab specialized in bio-engineering creatures through dangerous genetic experiments.
Ja'inn was a non-player character in the 2003 video game Star Wars Galaxies, a massively multiplayer online roleplaying game developed by Sony Online Entertainment and published by LucasArts, prior to its closure on December 15, 2011. Ja'inn was added to the game with the release of the "Publish 28," on April 26, 2006.