According to one of the urban dictionaries, badass refers to “a troublemaker, especially one who is rough, tough, mean, or, sometimes, violent”. Using this definition, I guess I agree Napoleon was a badass. So what is the most badass thing about him? I would have to say it is how he won most of the battles he fought, and there were a lot of battles, almost 60 of them.
He focused on completely and utterly destroying his enemy, which demoralized his enemies and forced them to have to negotiate surrenders on Napoleon’s terms. Some of Napoleon’s tactics are still studied today.