The Q9 series was an experimental design loosely based on the R7-series chassis, and unlike most astromech droids, the Q9 was designed with a fairly complex personality matrix to allow for rapid learning. The Q9 droids were also intended to serve more functions than those of an astromech droid, and its skills at data access could be used by most diplomats and scholars.
Industrial Automaton considered the Q9 series to be a total failure; the personality matrix programming was faulty in most production models, and only a few hundred were produced and sold. Also based on the R2-series, the Q9s were launched without sufficient testing, according to the statements of critics. One of the most famous droids of the Q9-series was Q9-X2, who over-modified himself with an array of gadgets and gizmos. Kyp Durron also owned one, called Q9-01.
- Ambush at Corellia (First appearance)
- Assault at Selonia
- Showdown at Centerpoint
- The New Jedi Order: Agents of Chaos II: Jedi Eclipse
- The New Jedi Order: Dark Journey
- The New Jedi Order: Enemy Lines I: Rebel Dream
- Cracken's Threat Dossier
- The Essential Guide to Droids
- Star Wars Encyclopedia
- The Official Star Wars Fact File 119 (Q9X1-2, Q9-X2)
- The Complete Star Wars Encyclopedia (As "Q9 unit")