Fawste was a Chiss male from the Ascendancy who worked for Imperial Intelligence. He served during the Cold War that occurred between the Galactic Republic and the Sith Empire.
Fawste plotted to abandon the Empire and join the Republic in 3642 BBY, due to his perception of the Empire's wickedness. He provided important data to General Karastace Gonn, who then recruited numerous Imperial turncoats to the Republic's cause. Nevertheless, Darth Baras learned about Fawste's clandestine meetings with General Gonn on Nar Shaddaa. Consequently, Baras dispatched his apprentice with orders to assassinate them. After Gonn was slain, Fawste implored the Sith Warrior for mercy, but the apprentice disregarded his entreaties and killed him immediately.