Aclonica the Skeleton. Yes... I do know he looks exactly like purple Sans, he wears a purple replica of his grandfather's clothes.

Unfaire battle sprite

In case you're wondering what Herzenskummer (Toriel's theme) means, here it is.

Sorry memers

A video from my Sans fight (still a WIP)

Thought I would post a screenshot from my WIP Sans fight.

!!!!!!!!!!!!!!

Arial overworld sprite

VioletTale Gaster Blaster

This doesn't seem that Noelle-like