Cat Miin was a female Gossam who served as Presidente Shu Mai's aide during the Separatist Crisis and the subsequent Clone Wars as a member of the Commerce Guild and Confederacy of Independent Systems.
In 22 BBY, Miin accompanied Shu Mai to the Separatist bastion of Geonosis. There she witnessed her mistress dedicating the Guild's droid armies to the cause of the Confederacy under the Sith Lord Count Dooku. Three years later, in 19 BBY, Miin was slain on Mustafar along with the Separatist Council by Darth Vader, Dooku's killer and replacement.