Knowledge is broken down by ease of discovery/availability; Any attempt to know more than what's Pervasive will require a reference, source, knowledge, check, or access to someone who can get or provide either of these.
This being had self ascended, taking on a higher and higher order of existence. Over hundreds of thousands of years, the entity became virtually god-like, and their very Essence elevated to Celestial from Material. It and others it walked with choose to leave behind the world they worked to create, and travel to a new sun to continue their journey. They came to Helca and lost their way for some reason. Thoth is known to, along with Anubis, be the great advocate of a cosmic plan (known to them as the Illuminated Awakening).