These guys are creepy! OK so they are humanities, and all that in good in the world’s last chance, but when you read of a crazy magic user sucking the souls out of warriors to infuse bronzed effigies and bring them to life, I find it very creepy! .. even if they are the good guys!
So in games terms you are in charge with units of these humanoid living metal warriors. They tend to be above average abilities with better weapons, however you will find that you have less models on the table that other armies. This means that you will be siding quality over quantity.