Fair enough. I was just asking because the image with the character named Ressa looks a lot like Tyros.
Ressa was indeed an inspiration for Sil to write Tyros (though changing her from futa thraggen to intersex minotaur bot). Similarly, Qailla was directly utilized from Fenoxo for the hardlight crafter NPC of the same name. Why, even I used a doodle of an alien race I'd called the "Onu" for a halloween submission that ultimately turned into Sauwinn.
These doodles are done for fun and passion for the setting. Any author is welcomed to adopt one of these doodles, free of charge, for whatever project they might have bubbling inside them. They can take it wholecloth, or change stuff around however they need to.
But it's not like there's a checklist on what will or won't be used. They're just concepts, after all.