Astor was a Human rebel of the male gender who opposed the Imperial backed government on the planet of Ahakista.
Astor, despite being a lieutenant Dunlan trusted, turned on him, revealing a rebel hideout's position to Darth Vader for monetary compensation. Soon after, stormtroopers reporting to Vader attacked the safehouse while Dunlan was inside. The stormtroopers killed the majority of rebels present, but Dunlan was able to get away amidst the fighting.