At some point I'll make some notes with the lore and AU idea, but that will happen once I like and won't change most of the
things. Now, I'll keep doing designs and choosing roles for the characters of this AU, which are most of the characters related to Gaster like RK or Friend.
As a small explanation, Gaster used to look lile the right one and I'll usually draw him like this. BUT he doesn't have an actual body or manifestation, he uses various like the trees since they are basic and easy. The left one is his failed attempt to take his original form.
I'll explain a bit about the idea I have now. It's the normal "Gaster" history but he is just silly. He is a "ghost" trapped between realities but can access the code and code things. Yet, he is a nerd of games and puzzles, so he does it for fun. Also, he is called Mistery Man.
Well, I kept thinking about the Gaster Groove and the design I already did soo... I changed and made it better. Also, made a bit of lore and ended up making a second design for Shadow Mantle.
So now it's kind of an AU and I'll probably keep making designs. No name for now tho.