Headcanon: When Party Poison and Kobra Kid die, because of their devotion to the Zones and spiritual connections, they take the Phoenix Witch’s place and shepherd souls to the afterlife. Poison collects souls during the day and is associated with the sun, while Kobra collects souls during the night and is associated with the moon. Some say that just before dawn, you can see them wandering the plains together.
I don’t have a great visualization for this, but I imagine them having tribal outfits like the Witch. Poison wears a deer skull that covers the top half of his face, and Kobra wears a goat’s. People paint altars/holy places with plant-made dyes and leave out small toys for them.
I feel like because gender roles are probably very strict in bc, there basically aren't any gender roles in the zones. When people move to the zones away from bc they want to get away from the pressure to be a certain thing and of course fitting into gender roles is a part of this, so they leave that behind and they become their actual true selves. Of course there would still be masculine men and feminine women but because that's just how they are.