This is Kid Robot's latest plush offering for late 2021, the "Hug Me Vibrating Plush Doll".
The plush is fairly large, at 16 inches long when not sitting. The legs are hinged at the hip (instead of being joined normally to the body) so the legs can swing down to make it look 'standing up'. Because of the 'action' feature, it has to be somewhat stylized, and in this case have "big body" where the body is disproportionatly large so it can fit the shaker item and batteries, plus zipper to change them. The zipper is underneath.
First of all, why do we need a doll that shakes? Why have a vibrating doll? What is it shaking for/how does a doll that shakes be better than one that does not shake? Kid Robot seems to like the idea because it has special 'squeeze sensative vibration feature' included here. It's clear they put lots of thought into the ability to make dolls of various sorts that shake. As it is large, and also a battery toy, it is about 35 dollars.
The plush seems to be caught somewhere between 'stylized' and 'attempt at accurate' which leaves it in an odd spot. The face/head is very nicely done, but then the hands only have 3 fingers (which is ALWAYS WRONG) he either gets 5 or the hand is stylized into a ball or mitten. There's even something in the copyright somewhere for him that 'if he has fingers he needs 5, never 4'. Hopefully that gets fixed. Then, the 'big body' issue makes it look not-as-great when standing up because of the hinged legs (that make it sit better) With all the effort they did for it (hands look good, good spikes, great shoes, nice fabric, good embroidery etc) it seems a bit of a shame that they went with 'fat body stylization'.