Alternative Option

Or, a different AU version of Gaster that I'll play if requested.

◘ Pre-Erasure.
 ◘ A mystery science cult leader along the same vein as Pythagoras. The Followers will be coming into play with this one more-so than the blog’s flagship a**hole.
 ◘ He has two notable times one can interact with:
     • Prior to discovering that the world they are in is a game, wherein he is a mad scientist but not an outright antagonist. He’s actually nice! Just eccentric.
     • Until after discovering that the world they are in is just a game, at which point he starts to go off the rails. His Followers, well, follow suit. Their group could be likened to video game bosses while the BBEG(aster) works on changing and twisting and corrupting their world to try and gain the attention of whatever is behind the code their world runs on. Clearly a villain arc ending in his erasure but not-quite-there-yet.
 ◘ Not related to the skeletons.
 ◘ A wight.

And this is a constant between this option and the profile’s flagship: I use “wight” to refer to “undead of mixed lineage” - mother was a wight, father was a ghast. Gaster was born looking like a skeleton that his parents thought they could be clever and call him “Wingdings Gaster” both as a pun and so he’d fit in with other fontly-named Skeleton monsters.

His skin and underlying musculature grew in over time as he approached his teens, much to his parent’s chagrin.