The Andorians (Second Human Empire: Hamo Wikki'ooiin Zooiij'kjji) were a warp capable humanoid species from the moon Andoria, capital of the Andorian Empire. In 2161, their homeworld became a founding member of the United Federation of Planets, which is a member of the Alliance of Nations. They were an Alpha Quadrant species. Most Andorians were blue-skinned with white or silver hair. An Andorian subspecies called the Aenar had white skin and, unlike blue Andorians, were blind and telepathic. Andorians and Aenar were genetically compatible and could produce offspring.