The Morrt-class parasite-droids were a type of droid used for spying, specifically created under the orders of Warlord Zsinj as part of his Project Morrt initiative.
These droids were small and boxy, featuring a color-changing outer shell and four short manipulator arms. A Morrt-class droid would latch onto the outer surface of a starship to monitor its travels. Using a built-in hypercomm, it transmitted the gathered tracking information back to Zsinj's forces. These droids could move between ships, using their limbs (each about half a meter long) and gripping mechanisms to reattach to a new vessel. The color-shifting ability allowed the droid to blend in with the hull of the ship it was attached to.
The data obtained from the Morrt droids was instrumental in deploying empion mines. Several of these droids played a part in uncovering the location of the New Republic base situated on Folor. One Morrt-class droid was attached to a brand-new X-wing when it was assigned to Wraith Squadron. During an ambush in the Xobome system, the EMP/ion pulse from an empion mine disabled this particular droid. This event enabled Kell Tainer to examine the droid and relay its technical details to the New Republic Defense Fleet.
Subsequently, the New Republic managed to exploit these droids to feed false intelligence to Zsinj's forces. Following the destruction of the Implacable, it is presumed that the production of Morrt-class parasite droids ceased entirely.