Notes:

Artwork Axel-Rosered did of characters from Monster High, but they were apparently deleted off his deviantArt. My guess is either 1) these were commissions and the commissioner asked for the pics to be removed, or 2) some slight ambiguity on if the girls in question are 18 or not. Personally I'm just going with the mindset "in this art they're at least 18." I came across these via someone else's deviantArt page.