This may sound silly, but I think the druid looks friendly. Their fierce clothing implies they are hostile, but their body language looks welcoming. Their relaxed, wide spread arms look like they're waving to someone they haven't seen in a long time. Standing on the rock, along with their straight legs and back make it seem like they are just making sure their friend sees them. The last thing I see is that the mask gives them a wide-eyed, neutral expression that appears to be innocent and happy like a child.
...But I'm not going over to them to find out.