sorry for the delay, Real life is stupid
anywhay. don't worry about it Jimex, i am flattered that thought it was good enough to be a copy of meph's work.
as far as the dark ones are concerned, the basic idea was that they would be evil, dangerous and sinister beings sort of like a fusion of dark eldar mandrakes from 40k and dopplgangers from dungeons & dragons. i will probably add more castes to them to make them a bigger and more complicated threat to a fortress. basically: you encounter them once, and they appear to be a pushover. but then dwarves start to go missing. a dwarf is found drained of blood. is it a vampire? or is it something else... the area surounding the fortress is shrouded in fog, and mysterous creatures stalk the fortress residents.
the player is soon jumping at every shadow, and quarantines the entire fortress, until inevitably, the fortress spirals into chaos. then the dark ones strike.
tl;dr: they are supposed to be annoying as hell and require some strategy to fend off.
some of the stuff, like the desguising themselves as dwarves and infiltrating your fortress, are way beyond my ability to make. if anybody knows how to make that happen, or is has a scrap of RAW that they wish to add, go head
ps. and this race is what happens when i read a bunch of the night lord novels all at once
. just be glad i did not mod in heldrakes or khorne beserkers