I made this in Stickmin Creator. I am pretty proud of it.

Here are the main sprites so far

I finished the Battle Sprites

Overworld Sprites

I finally finished Purgatory's overworld sprites

I got the main sprites for Sans done

Her AU name is officially Murder!Red. Also, here's the sprite sheet.

Parchment Sprite 1

Another Sprite. This time Luigi(Toriel).

Note: This is not an official sprite. This is meant only to show the character's design.

Extraordinary Sans