Wong

Hi I am relatively new to Malifaux and am slightly confused on how Lo's Ancient Entourage rule works? I get that the ancestor characters are unique so he can only have one of each at no cost. However he can also have Ashigaru and a punk Zombies at no cost. I must missing something as I read this as meaning he could potentially have limitless number of these? Could someone help me out with an explanation on how the no additional cost works? thanks