His main aspect is his PATIENCE. Despite having fangs and sharp claws that look ready to tear and slash at any moment, the first impression can be deceiving. He is usually very calm and observant, able to discern the intentions of whatever or whoever caught his attention. In other words, he can feel when someone is scared of him at the first meet and will respect their space, after all, he doesn't want to be seen as a monster just for being too big, he wants to be seen as someone friendly who doesn't desire to kill anything he seees. It's just too difficult to people to understand Aaron... To understand his body language the way he understands everyone's body language as if he masters it.
Back to his patience, when someone is trying to communicate with Aaron, he will listen to them, but will pay way more attention to the person's body language. The more they're expressive, more he will be able to understand them clearly. He rarely gets irritated or annoyed, possessing a tolerance for everything around him that anyone would wish for. Instances where Aaron gets irritated are very rare, and when it happens, he frowns and gives you one last warning to stop and leave for good. Once your patience finally runs out... things end rather lethally. Usually after it happens, he'll feel bad for having lost control, not wanting to assume the image everyone feared. But as I said, these are very rare occasions, so there's nothing to worry about... Just don't test the giant's patience and everything will be fine.