Shu Mai was a female Gossam native to the planet of Castell and was around during the waning days of the Galactic Republic. She was the Presidente of the Commerce Guild before and during the Clone Wars. She grew up on Castell where she was one of the millions of Gossam who suffered a massive economic depression and would be saved by the Commerce Guild, which she later joined. During the Separatist Crisis, she supported secession and would later on join the war effort against the Republic and became one of the leading members of the Confederacy of Independent Systems, serving as a member of the Separatist Council.