Droideka Sentinels, also known simply as Sentinels, were an advanced variation of a droideka modified by smugglers to protect contraband. Like its predecessor, the Sentinel was equipped with two blaster cannons, but had better firepower due to combat improvement. During the Galactic Civil War, both the Galactic Empire and the Rebel Alliance utilized it as a security droid.
- Star Wars: Commander (First appearance)
- Star Wars: The Complete Visual Dictionary, New Edition (First identified as Sentinel)