We got new troll models, (we never communicated about it here) with the a fresh one finished at the moment, the pyromaniac.
Each of them is unique (except the random) and is considered like a mini-boss before the final boss that is the chief troll (not designed yet).
So they all have different specificities, they have different attacks and competences when the player fight them.
They are located in their own area where they live their lives. They are literally blocking the way, you have to beat them to continue and progress.
This is the old model, not good enough, especially the stance: