R3-B0017 was an astromech droid of the R3-series variety, programmed to perform scavenging tasks on the planet Dathomir and to loyally serve Dathomirian Zabrak Darth Maul. Its exterior featured green durasteel plating.
This particular droid was outfitted with a red sensor, a primary photoreceptor, radar eyes, a Herner optical holographic projector, a Burtt acoustic signaler, a processor state indicator, system ventilation components, a hi-power recharge coupling, hydraulic arm shafts, a heat exhaust system, a cargo compartment for storage, system lubricant filter reservoirs, and an accentuating coupler.
R3-B0017 was available for purchase at Disney Parks during September and October of 2017 as an exclusive Halloween-themed toy, part of the Star Wars: Droid Factory toy line. The toy was largely constructed from green, "glow in the dark" plastic, drawing inspiration from the green mist seen in the Star Wars: The Clone Wars episodes taking place on Dathomir. A similarly named Halloween-themed droid, R2-B00, saw its release in 2016.