I never noticed it lacks a signature, but it’s (hardly surprising) a concept from Tyson Tan, I recently noticed he updated the Kiki page on krita.org with a lot of his (experimantal) designs: Mascot Kiki | Krita
Probably was a good idea, given the rate at which Elon destroys Twitter right now
And good luck, I’ve tried often enough to know that working out the deails for cyber squirrels is quite a challenge, at least if your brain tries to imagine how it actually connects in three dimensions…
Stylized 2D art doesn’t necessarily have to conform to realistic standards, therefore it generally isn’t easy to form a true connection between 2D and 3D in the context of rendering, especially since such stylized art often aren’t made with such volumes in mind. Sometimes rules have to be broken for the sake of appeal.
But if you want to try, the top of Kiki’s “snout” is generally broader than that, if you look at the references linked above, at least in pieces where Tyson takes a more defined approach.