Finally. My little end-of-the-world character. D'aww.

the Gaia Hypothosis (where this all originated from, i believe) [link]

Other Apocalyptic counterparts: Fauna, Light, Darkness, Solar, Essence of Life, (err, any others you can think of that would qualify?)

Basically, they're a tag-team. So if you wanna design something up, i'd be happy to draw 'em beating up things together... There only have to be a few requirements;

They'd have to be huge
designed properly to thier element/ aspect
they'd have to be vicious in accordance w/aspect (ie, mine's plants, so it's poisonous)