The Pliith were a sentient species of plants. Lacking independent locomotion, the species was dependent on other species for movement. Their plant-like physiology required substantial amounts of sunshine, together with rain and fertilizer. A notable Pliith was Linkaas, president of Linkaas Corporation. Ruthless in his business endeavors, he tried to have his courier Dannen Lifehold killed so that he could retain the starship he had exchanged with the Human for a substantial debt. That plan was thwarted, however, and Lifehold fled his employ.