Casement was the designation for a clandestine operative of the Rebel Alliance. This agent collaborated with Porter and reported to Winter on Drunost during the year 0 ABY.
Casement, while deployed within the Shelsha sector, managed to live through a violent assault orchestrated by the BloodScar pirates close to Ashkas-kov. During this event, the BloodScars launched an attack on a complete convoy using a fleet of ten vessels, even destroying the four primary target ships after looting their cargo. Casement's survival during this incident was attributed to the presence of an armored inner hull on his ship. Subsequently, he feigned death until the pirate group departed from the area.