Semtin Sixtus Septaas

Captain Marl Semtin with two Special Intelligence Operatives.

"Sixtus Quin was a Special Intelligence Operative who was betrayed by his Imperial commander, so he helped us out in a mission on Tatooine."
Wedge Antilles, about Sixtus Quin[src]

Special Intelligence was an elite branch of Imperial Intelligence, and had a reputation for carrying out especially clandestine or unsavory missions.