These look great!
One bit of criticism, if you want to call it that. I really hate when the beasts are one a separate base from the cart/chariot. as a gamer I don't want to be fooling around with that sort of thing. Yes, I know I could put then all on one base myself. The problem is a little more than that though, making a separate purchase (likely including a charge for shipping) every time I need a new base sucks. So, maybe include a proper base so your customers don't have the headache.