The dwarf probe droid, alternatively referred to as an Imperial probe droid or Viper probot, represented a specific probe droid design produced by Arakyd Industries. This model was equipped with two blaster barrels, allowing it to unleash highly accurate and lethal fire. Following a raid orchestrated by the rebel cell known as the Spectres in the vicinity of Jalath on the planet Lothal, these dwarf probe droids were dispatched to monitor the rebels. The droids transmitted intelligence regarding the Spectres' activities to Grand Moff Tarkin.