is Ziggy's mentor, and the founder of the , a set of techniques performed by gravity users in the series. His prowess allows him to control gravity in conceptual senses, such as lightening pain and causing others' thoughts to "fall" into him. Previously a human member of the , a historic group of heroes stated to have guarded the Sakura Cosmos during the universe's Dark Ages, Xenolith has since transferred his mind into a robotic body to survive one thousand years after his death.
