Hawthorn has been the Earth wolf in the pack, as you may be able to tell by his fur. He roamed the land for a while and eventually asked Willow to settle down in her pack. Willow always had a soft spot for Earth wolves and she let him in straight away.
Since Hawthorn was so good at exploring, Willow gave him the Scouting role. And he has defiantly lived up to it. A lot of wolves say that he is one of the best Scouts around