This is Xentur the Aether God. He controls every single mob in the Aether, puts chest loot in chests, and tries to find the ultimate hero. The way he does this is making Slider Dungeons. Whoever completes the dungeon the quickest and most efficiently it titled "Ultimate Hero." You cannot actually find Xentur while in the Aether, but legend says that there is one magical AirBunny that has the strength, mind, and endurance of Xentur's.

Xentur wears a Gold-Encrusted Zanite Helmet that grants him the power of flight and the ability to read one's mind. At the end of each of his hands is a tiny hole. He uses it to spawn mobs of the Aether. You will know which is the magical AirBunny because it, like Xentur, has tiny holes on it's hands and feet.

Just remember o Xentur is always watching you.