It's here! It's up! There's actually a 2020 Dementia of Magic holiday wallpaper! It's in the Gallery! Check it out!
Madame Boutrix, a wax museum proprietor. She was only seen from the back, controlling one of her wax mannequins, before Alex and Matt decided to walk right on by. I actually had her drawn out in more detail like this beforehand, but didn't use anything else (the other sketches I'm about to dump were made after their respective facts).