The Tammuz-an were a humanoid race native to the temperate world of Tammuz. There were two distinct races of Tammuz-an, distinguished by their skin color. One race was recognized by their blue skin, while the other had purple skin. For many generations, the Tammuz-an races fought each other in a civil war, until princess Gerin was captured by Gir Kybo Ren-Cha and taken to Bogden. Lord Toda agreed to join forces with Mon Julpa, and their rescue effort served to reunite the Tammuz-an people.