Though the White Gem’s origin is uncertain, it’s well known that there’s a Guardian to protect it, his name is Zhulong, he is a Necrozma-Silvally hybrid, but like his gem, his origins are unknown. However we know that he and the White Gem of Aether are in another plane of existance, that being the Sacred Realm of Light (not to be confused with Heaven.) His abilities comprise of him being able to travel at the speed of light, as well as having the ability to produce flashbangs, alongside concentrating light into solid objects, mainly to conjure weapons for him to use. Zhulong also has the ability to open Ultra Wormholes in order to travel from his realm to the main plane of existance. He tends to take the power of the White Gem of Aether very seriously, as it can cause chaos in the universe, should it fall on the wrong hands, yet he seems to get along with the Adelian Gem Guardians, though he doesn’t show up to them in person.