IMP-22 was a masculine Imperial military protocol droid that was programmed in warfare and politics, making him a valuable advisor to the commander he served with the assistance of SD-7 messenger droids. IMP-22 was humanoid in form, with red plating and a single white, visor-like photoreceptor. He was slightly arrogant, but seemed to have full confidence in the skill of his master. Nevertheless, IMP-22 offered his advice whenever he could, though he became short-tempered if his commander displayed any signs of incompetence.