Gam Rothwall was an Imperial Advisor working under Emperor Palpatine during the Galactic Civil War. As a child, he was separated from his family—including his twin brother—during a battle between Imperial forces and defenders from his homeworld. Unaware of his true family, he joined the Empire's bureaucracy and rose through the ranks to become one of Palpatine's personal advisors.
During the Galactic Civil War, he visited the planet Garnib on a surprise inspection tour. While on the planet, he was the target of an assassination attempt led by an Anti-Imperial movement on the planet due to his role in capturing and executing high-ranking officials from the Garnib Crystal Corporation. He was also confronted by his twin brother, who had been informed of his brother's existence by a dying relative.