Talk:Garou/@comment-5739199-20160101232449/@comment-5780397-20160102231352

The Association considered the all members of the Monster Association, well, monsters due to their danger and supposed power, but they couldn't know some of them were human. Besides, it was theorised (or proven?) that most monsters, if not all, were actually human.

It was also said that among the heroes there are some who have been enhanced genetically, or have been turned into cyborgs. Plus, aside from monsters and heroes, there are also criminals. My guess is that a monster is defined by its alignment and either its power or its intellect (whether it's humanlike or not): people who wield monstrous power, like Sonic, but are not hostile towards humanity are considered criminals and not monsters.