S-EP1 security droids represented a distinctive droid design brought to life by Ulban Arms.
The S-EP1's purpose was to function as both a protector and a peacekeeper. Using an Arjan IV logic computer as its foundation, the S-EP1's electronic brain was loaded with every piece of information possible to ensure it performed its responsibilities at the highest level. These droids came with a price tag exceeding 200,000 credits, but their superior quality generally justified the expense. Their construction provided resilience against smaller blasts. The droid's arms were powerful and hydraulically powered, granting them exceptional strength, and their hands featured a pair of opposing thumbs to enhance their fine motor skills.
Although programmed for non-deadly conflict, these droids were authorized to use deadly force if the safety of the individual they were guarding depended on it. They possessed significant intelligence and proficiency in areas such as combat strategies, criminal behavior, medical assistance, and piloting vehicles.
One instance of an S-EP1's service involved guarding the offspring of Princess Leia Organa Solo.