Aidan was originally blackmailed into going after Keeva, but just couldn’t find it in him to go through with it. That, and he resented being blackmailed. In order to shapeshift, he has to have the skin of a wolf, which he usually wears like a hat. It’s something he inherited from the selkie side of the family. He also used to be a tracker for the Wild Hunt, though he has apparently left them. He usually knows a lot more than he lets on about, even when it’s important and directly involves his friends. This is because he’s a little on the shy side.