Elfdemon's Deuterium Theory[]
This theory is very small and doesn't have much evidence to support it. It is just a thought.
Kicky Kicky Flow - Dan Bull
On Dan Bull's song, Kicky Kicky Flow, an Area 11 Logo appeared in the corner of a notebook page. On the page next to it, there was a drawing of Deuterium. Sparkles' Tumblr page is called The Edge of the Explosion. Sparkles has hinted before that The Edge of the Explosion has something to to with Digital Haunt. So, my theory is that the Deuterium has something to do with the Explosion. Deuterium is used in heavy water moderated fission reactors, so maybe the explosion is a nuclear explosion.
Here is a Wikipedia page for Deuterium: http://en.wikipedia.org/wiki/Deuterium. On this page, it states that the deuterium isotope's name is formed from the Greek meaning "second", to denote the two particles composing the nucleus. Sparkles* and Leo have also hinted that Greek mythology has something to do with Digital Haunt. Maybe deuteros (second) is the 2 in Cassandra pt 2, and Cassandra has something to do with Greek mythology, particles, nuclei, or something like that.
Also, stars and the sky have something to do with Digital Haunt. On that same wikipedia page, it states that deuterium is destroyed in the interiors of stars.
I am not sure how any of this is connected, but it doesn't seem like a coincidence that Greek mythology, deuterium, and stars are all in one place. Maybe I'm thinking too much of it.....
Additional Information: The google definition for nucleus is: "the central and most important part of an object, movement, or group, forming the basis for its activity and growth." So maybe Cassandra is the nucleus of the Echoplane, or the Echoplane is the nucleus of the digital world, or something like that.