Coluans (also called Megans) are the inhabitants of the planet Mega, known to the natives as Colu. Very few Coluans survived the atomic wars of Colu. One was Professor Hecla, who created the android Brainiac. The majority of Coluans have green-skin, although some have skin tones that are indistinguishable from human skin. Sometime during or before the 30th century, the Coluan race become citizens of the United Planets, as their homeworld becomes a member of the UP.