For a dark story? I always imagine dark basements with chains or fallen angels. Names I would think of are angel names. Samael, azdeha, azreal, lucifer, Gabriel, etc.
That's because for it's year and a half of existence, I've only been actively writing it for about six months. Seth
“In brightest day, in blackest night, No evil shall escape my sight. Let those who worship evil’s might, Beware my power… Green Lantern’s light!“
Warionion: windy and sunny Gradlaman: freezing and rainy Trinalium: sunny and rainy Poiliom: hot Hariium: snowy
Feather's Alt here: I mean like Tropical, Tundra, Desert, Polar, Monsoonal, and Maritime (Like beaches have).