Hazel is the most unique villain in RWBY, while he is on Salem’s side, is not to be taken lightly, and have a past with Ozpin, he also seems to only kill when he feels its necessary for his cause, however, he does have a side to him that seems more human, as in, despite being a villain, he does have his limitations, like when Sienna was assassinated, he did feel like it was necessary for her to die, but that if she sided with Salem, she could have gotten results for her cause.