Imperial sentry droids were a model of sentry droid utilized by the Galactic Empire. Imperial sentry droids were used as guards and even combat training units. Many of the droids were stationed aboard Imperial vessels such as Class four container transports and Imperial Star Destroyers. The Spectres rebel cell, Hondo Ohnaka, and Azmorigan encountered four of the droids while looting an Imperial container transport. Later, Grand Admiral Thrawn used two of these droids as combat training units during his hand-to-hand exercises.