R3-T2 escaped from a crew of pirates that were based in Mos Eisley. They tortured and abused the little droid for many years. The unit was programmed to both enhance and sabotage hyperdrive systems. He was also equipped with an increased memory capacity that made him different from standard units of the R3 line. In 0 BBY, R3-T2 wandered the streets of Mos Eisley when Luke Skywalker and Obi-Wan Kenobi were heading to Chalmun's Spaceport Cantina hoping to find a pilot.
- Star Wars: Episode IV A New Hope (First appearance)
- The Complete Star Wars Encyclopedia
- Star Wars Customizable Card Game – Special Edition Limited (Card: R3-T2 (Arthree-Teetoo))
- The Official Star Wars Fact File 11 (AST3, Astromech Droids)