Hi, very nice, so many animations already
I worked on preparing a module that combines your simple model and my very basic AI which makes it walk around randomly.
I got it somewhat working by editing the model and animations manually so that the head is no longer a root bone. It's now properly displaying the model but the head is broken.
That what it looks currently:
I would also suggest that we make the model about 30-40% larger so that it is clear that it doesn't fit through 1 block high holes.