It's admittedly kinda hard considering they're an angel and demon and i'm agnostic so i don't really like the idea of an entire species being solely good/evil or the idea that there's a LITERAL heaven or hell that you go to when you die. I mean...both characters live in their own stand-ins for both dimensions and i'm mostly taking inspiration from the nether from minecraft and the aether mod (which besides the inspiration, are completely separate from the bible) for said dimensions, but still :/