Everyone here may be asking what the fuckthis have to do with the Tobyverse
My concept is that it was a planet-sized organism (from some faraway solar system), but the Roaring was caused in it, leading to it absorbing the Darkness and being corrupted into something else, a gargantuan, wacky looking Titan with hanging tendrils on what could be called the "down" part of the body.
I based it on 0, from Kirby's Dreamland 3, a Hatching Titan and this:
Also, bonus points if you know what game's world i remembered when drawing this!
{A grey wasteland with ocasional cave systems where life prospers... Maybe some small animals... and a dark internal layer.}
EVERYTHING WILL FALL TO ZERO
Why does it kinda look like those jellyfish enemies in Fog Canyon in Hollow Knight
Yeah looks very similar
But i didn't even think about Uumuu while making this 
That explode after they die
Yeah looks similar
But i didn't even think about Ooma while making this
Really¿¿ Nobody there¿¿ Guess i'll need to give the response... It is related to G-
Long ago, two races ruled over Earth: HUMANS and MONSTERS.
(It is not related to G@$T&R.)
Nope, but hint:
The game was already mentioned 3 times in this post
Hollow Knight, ofc it's hk...
it always is HK, is it not? Welp, a fucking Dead World with life Inside(like some friend...)is quite literally HK. Also imagine living in a grey wasteland and suddenly finding a valley, with a certain town Inside... And down the Village's well... Well...
...
NYEHEHEH u got it right