A security droid model was utilized by the Crimson Dawn criminal syndicate. The model was a modified version of the A3L-N sentinel droid in a bulked-up chassis. The droids possessed a bulky stature and two heads. A number of the droids patrolled a prison area on Crimson Dawn's fortress flagship Vermillion. During Crimson Dawn's auction of the carbonite-frozen smuggler Han Solo aboard the Vermillion, the rogue archaeologist Doctor Chelli Lona Aphra and the smuggler Sana Starros encountered one of the droids while attempting to explore a restricted area of the starship. The droid informed them that the area was restricted before incapacitating the two and taking them to one of the prison cells.