Okay, what the fuck.
Weirdness aside, the middle head is actually Dark Ruby! Could you tell? I'm giving her a full makeup redo to make her look like Ruby's original skin. I completely forgot about this project until a commenter reminded me. (thank you!)
Dark Ruby uses the newer facial rig with more possible posing options, and generally a cleaner look overall with higher resolution textures, so this will be a huge win for a new Ruby model.