UL-series Waiter Droid

The UL-series Waiter Droid is a droid created by Serv-O-Droid.

Appearance
UL droids had an oblong shape, and they were decorated to resemble a person in a tuxedo. They floated on repulsorlifts, and they looked very posh.

History
UL Waiter Droids were conceived by Serv-O-Droid to compete with the WA-7 unit made by Go-Corp/Utilitech. They needed a droid which could go where other waiter droids couldn't go. UL droids were equipped with synth-paper notepads that they could use to take orders, and they also had Menu Card dispensers to help customers decide on what to order. The droids also had customer recognition and order recognition software, so that they could remember who their customers were and what they ordered. Finally, the UL units had gyroscopic stabilizer which allowed them to balance trays of food evenly. UL units were very popular in fancy restaurants around the galaxy. One such unit was modified by the Empire to serve Astromech droids to The Great Heep.

Trivia

 * This droid is based on an unnamed Waiter Droid from Star Wars: Droids.

Source
The Essential Guide to Droids: Star Wars: Droids Edition