C2-R4 was a multi-purpose droid built by Squibs as a failed project. The barman Wuher found one such droid in a Mos Eisley alley. The droid was previously owned by some Jawas who intended to use him for spare parts, but he was able to escape due to a faulty restraining bolt. He begged Wuher for help, however was abandoned because of Wuher's intense dislike for droids. One of the Jawas who previously owned C2-R4 later found and re-claimed him; but once again escaped when Wuher, after a realization and change of heart drove the Jawa away and claimed C2-R4 for himself. The droid later helped to create Wuher's perfect liqueur, notably after the novice bounty hunter Greedo was fatally blasted by Han Solo, and Wuher converted C2-R4 into a makeshift distillery. He then fed the stiffening corpse of the unlucky Rodian into the droid's shredder, piece by piece. Allegedly, the resulting cocktail was exquisite, at least to Hutt tastes.
Some months after Wuher and C2-R4 had started making specialty drinks, bandits broke into Wuher's hovel and devastated the place. They also stole Ceetoo's special mixology circuit board (which Wuher had taken out to clean), assuming that it was an important piece of data for the bartender. Wuher hired a spacer to track down and take care of the bandits, while he tried to find the pieces to put C2-R4 back together.
C2-R4 was a jumble of mixed-up droid parts. He had the body of an R2 unit, a number of bulbs and appendages (such as whip-like extensors) on his sides, and an opening in the middle of its face with a grill and seemingly, a set of sharp teeth. The droid had many capabilities including catalytic fuel conversion, enzymatic composition breakdown, bacterial composting acceleration, and chemical diagnostic programming as well as meal preparation, toaster oven, bang-corn air-popper, and blender. C2-R4 also had the programming of a protocol unit enabling him to speak in Basic instead of Binary.
- Be Still My Heart: The Bartender's Tale (First appearance)
- Star Wars Galaxies (Mentioned only)
- The New Jedi Order: Agents of Chaos II: Jedi Eclipse
- The Essential Guide to Characters
- The Essential Guide to Droids
- The Official Star Wars Fact File 22 (CAN2, Mos Eisley Cantina Characters)
- The Official Star Wars Fact File 67 (CAN18, Mos Eisley Cantina Characters)
- The Official Star Wars Fact File 79 (JAW10, Jawas)
- The Complete Star Wars Encyclopedia
- "Mon Mothma's 5 Facts"—Star Wars Insider 134