Azmuth chose Xenon as a way to escape the "mayhem" of the rest of the universe and to be able to continue his work in peace. He and Myaxx created a device that absorbs all the light in the vicinity, thus creating perpetual darkness around the planet. That, combined with the large asteroids surrounding Xenon, force ships, who attempt to come close, to crash blindly onto the asteroids. Azmuth created a homing beacon in the Omnitrix so that if it is ever in range, the Omnitrix will lead the user through the dark oblivion to get to Xenon.
- Xenon was named after Xenon, a noble gas in the periodic table.