The Texcalans famously allied with Cortez and the Conquistadores (or perhaps "not" famously, as I suspect many folks believe that Cortez and a couple of dozen men beat the Aztecs on their own?).
In that alliance of Aztec-hating contingents were the Totomac levies and Chinantec levies, both of whom I have made by picking out some distinctive figures and conjured up a unit of each with little or no basis in historical reality - but at least they are colourful and can be easily distinguished from the other Tlaxcallan troops!