Kodos the Executioner is a one-shot villain in the Star Trek franchise, appearing in the Star Trek: The Original Series episode "The Conscience of the King." He is played by Arnold Moss. Kodos was the governor of the human colony on Tarsus IV circa 2246, until an exotic fungus ruined the colony's food supply. In order to save half of the 8,000 colonists, he had the other half executed so that the remaining food would be enough. A believer of eugenics, he personally chose which ones would live and which ones would die. His executions were later proved unnecessary, since the rescue ships arrived earlier than expected, and Kodos (presumed dead at that point) became a historical villain.