Quote Originally Posted by reivaxe View Post
Gunnhildr is in the mural as a normal Femroe, showing her form before becoming queen. The model we see in game is post-Queendom (also has glowy cat eyes) and as such looks different from a normal FemRoe and matches the shape of the mural Hrothgar.
We're also shown a completely normal FemRoe obtaining that body after taking the Queen into herself, implying that this power is indeed changing their shape.
Gunnhildr is just as likely in the mural as the individual person Gunnhildr – or if you want to be technical, the specific Roegadyn who would later be crowned Gunnhildr.

Whatever you want to call her, she was seen first in mortal form in the flashback with that same body shape, and there's no reason to assume she somehow changed from before she was queen to afterwards.

I just don't see the reason why you would point at a character who makes a whole point of not being a Hrothgar and say that she must be designed to give us a preview of what Hrothgar will look like.