Rather than serving a god I would like them to enslave Hashut
and drain him from his divine/chaos power to fuel some apocalyptic weapon. could work with
a corrupted/hybrid daemonic machine Valaya joinning Chaos dwarves, some sort of Anthrasax.
Confrontation was a tabletop game with a really diverse army: Cadwallon:
https://confrontationpills.com/all-confrontation-cards/cadwallon-cards-army-confrontation/#tab-id-4
silent people inspired by the representation of insect in japanese manga like Belaf in made in abyss. they have something otherworldy, mystic and horrific.