Who is such-and-such model? Why was that photo used for that character?
The photos on this site were all purchased from photo collections and photographers. As such, we do not know the name of any individual model. Likewise, Sherrilyn’s publisher chooses the covers of her books and we are never told the name of anyone who appears on one. Sorry. We have no idea who they are.
The character photos are chosen to give an idea of what a character may look like. None of them are the exact representation that Sherri sees when she writes. They are merely provided for entertainment purposes only. The beauty of the series is that everyone sees the characters the way they want to and not necessarily the same way Sherri sees them. Case in point, she never thinks of Acheron as anything other than blonde because blonde is his real hair color. However, most fans see him as a brunette.