The Koeri are a sapient species of humanoids with sharp teeth, orange and yellow skin and green hair. They also have slanted eye pupils. They originated from the planet Venus but when the great catastrophe that turned it from a swamp planet to a burning wasteland occured, they had to either abandon their dying world and occupy outer space or build artficial shelter to protect them from the acid rain. They also shared the planet and cooperated with two other sapient species of humanoids: Sherei'Towlri and the Venusian Humans. And also, with a sapient insectoid species called the Skreetana.