What did it mean to be a monster?
Was a human a monster for trying to survive?
Azrael was cursed by Necrosis. And as long as he was cursed, he wouldn't be able to live long if he didn't take the lives of other demigods. So could anyone blame him for the things that he did when it was the only way for him to gain power?
Was this not the same thing that happened in nature?
Creatures struggled and suffered to make sure that they could live.
It didn't matter what form of suffering they brought to the lives of other creatures. It didn't even matter what they killed in order to preserve their own lives.
Would you call these creatures monsters?
Could anyone fault him for the things he had done? If his life was placed on paper and someone studied it, would they not say that the things he did were necessary?