Maine Coon cats are not aggressive cats.
In fact a good thing about Maine Coon Cats is that the Maine Coon Cat is known for being the most friendly and affectionate cat there is.
I've never known or been around a Main Coon cat that was ever aggressive or mean.
All the Maine Coon cats I've been around have been very loving, gentle and friendly as well as playful.
But I guess if the Maine Coon cat seemed threatened then the Maine Coon could could be aggressive.
Maine Coon Cats make for very good and friendly pets.
The Maine Coon cat is also great around kids and are a good family pet.