*reads Pallian-Azar's write up*
how dare they drop this plot hook about devil-stars, and then taunt me with the meanest crumbs of lore
how dare they
If it makes you feel better, the writers state the devil-stars are explicitly Tzitzimimeh with the serial numbers filed off in the Discord.
So, pissed-off star goddess with a rattlesnake as well as female parts who may or may not be one of the prototypes of humanity. Which may or may not be even more agonizing to look for bread crumbs about.