Will fix the mistakes now, as for the questions

1. Well, he is something of a very rare special orc(genetic-wise), like one in a million sort of thing, though it can be changed that he is only a head bigger than other orcs.
2. Yes, he was wounded, though nothing life-threatening, it has left quite a few scars on hin
3. Well, when there are rumors of huge riches, it's enough to unify a large group of raiders in hopes that there actually a lot of riches in the place that has rumored riches.
4. Erjak is not sure himself what they are, he just knows that they are very dangerous.