Liyang was an inhabitant of Omega IV and a member of the Kohm on this planet.

In 2268, he was ready to execute two captured Yangs, Cloud William and Sirah with an axe, when a USS Enterprise landing party arrived. Liyang then wanted to attack the landing party, but was ordered to stop by Captain Ronald Tracey who through the use of phasers had gained influence among the Kohms. (TOS: "The Omega Glory")

Liyang was played by Frank Atienza. In the end credits of the episode, Frank Atienza is credited as having played "KOHN VILLAGER".