The Zieske Enforcement Droid Series 309 (ZED-309) is an improved series of Enforcement Droids produced by OCP. Named after it's project leader, Matthew Zieske, the 309 series is considered to be a vast improvement over the 209 series, mainly due it not relying on a robotic "brain." 309 responds to direct commands from a human "pilot," thus eliminating the possibility for "berserker robots,"