AWESOME!!
Dark Eternals (Black Splitner) are really cool and uniquely layered... I made sure of that.
There are two basic factions in the splinter and this could fit either wonderfully but probably more the Horde... and yes as you say they'd march as one cohesive unit always together and always united. Probably less to protect family but to convert the other splinters in a noble (twisted) endeavor to save them.

So yeah I totally love this and look forward to what is next!
And of course this is my all time favorite of your songs you've done! (Totally biased)