I have created the first sprite. Here's Boopkins(Alphys). This is my first sprite so it may not look that good. I will try to make a better one for the full game.

I got the main sprites for Sans done

Parchment Sprite 1

Here are the main sprites so far

I finally finished Purgatory's overworld sprites

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

Extraordinary Sans

Another Sprite. This time Luigi(Toriel).

Overworld Sprites

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

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