These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Sympathy for the Devil: Xax was raised, hypnotized and manipulated into being what he was. He honestly believed he was going to save Kale; he'd just been given an ends justify the means mindset. Will lampshades it in the last episode, speaking to Kalem;
Kalem: You are not to blame (for Aruna's death).
Will: Maybe I'm not. Maybe it's you and Kreel, using Xax and me as your puppets.