Chain was the moniker Darth Maul bestowed upon a Duelist Elite droid that served as his training partner for honing his lightsaber combat prowess. True to its designation, a metal chain functioned as its primary weapon. Constructed with blaster-resistant durasteel armor, its programming included a diverse repertoire of martial arts techniques, executed at speeds marginally exceeding those achievable by Humans. Originally, a safety mechanism prevented the droid from delivering fatal blows post-victory, but the Sith Lord deactivated this safeguard. During 32.5 BBY, Maul employed his lightsaber to disable it, initially severing its legs at the knees before bisecting it vertically from groin to cranium using the Rancor Rising maneuver, during a training session against it and three other Duelist Elites, Cudgel, Hachete, and Rapier, inflicting irreparable damage.