Nabu natives were a humanoid species native to a planet in the Nabu system. They had light green skin, bald heads and pointed ears. The government of their world had an unusual way of carrying out the death penalty on convicted criminals: they would be exiled via rockets to one of the glowing asteroids located in the system's asteroid belt. There, they would be supplied with food, water and other necessities until the asteroid exploded, killing everyone on it. Since the time at which the explosion occurred for each asteroid was not known, this added mental torment to the criminals' punishment.