Personally I think it looks pretty cool but that’s not the topic, I’ve just been wondering why such a humanoid opponent has appeared, unless (this is me getting my hopes up) we may have a more playable races, I mean whats the point of a new human shaped opponent if we are not going to play as it. I mean look at the other Prometheans, the crawler, watcher and knights, they look pretty unique from other races, they could have made something else ridiculous to fight but they made a humanoid enemy. Again me just getting my hopes up.
I think they made it as somewhat of a foot soldier. The Knights I belive are going to be buffed to act somewhat like hunters. They are essentially replacing what knights did in 4.
I think they have been implemented as a middle ground between crawlers and Knights. I think they made an appearance in Hunters in the Dark. At certain points the characters in that book are attacked by armigers. When I was reading the book I thought they might be the Promethean soldier.