Morta is a Ferengi in DaiMon Lurin's renegade crew during the seizure of the Enterprise-D in Rascals, best remembered for being fed a stream of invented technical nonsense by William Riker.
Morta appears in the sixth-season episode Rascals. He is one of the Ferengi who board the Enterprise from stolen Klingon Birds-of-Prey and take control of the ship for DaiMon Lurin.
Lurin wants the main computer unlocked, and Morta is set to watch Riker as he is made to explain its workings. Riker obliges with a confident lecture made up entirely of meaningless jargon, which Morta struggles to follow, buying time while he quietly gives the schoolroom computers access to ship's systems.
That access lets the child-sized Picard and his companions trap the boarders, Morta included, and return the ship to its crew.