SPOILER SPOILER SPOILERS!!! You are warned this thread is a spoilers discussion so if you click here and read beyond this point it is your fault.
Now then...
So the Warrior of Darkness is introduced in 3.0 as the Trailer mentioned but....
SPOILERS!!!!!!!!!!!!!!!!!!!!
we do not actually get to see his face. However, the WoD appears to resemble the Midlander from the FF14 Trailers. I can only guess he and his fellow Warriors of Darkness may take on the appearance of the Warriors of Lights from the Trailers or the WoD our character face may look like our character.
Well sadly only time will tell how they will handle the WoD's appearance but I'm only guessing the WoD will....
look like the FF14 Trailer characters for easier incorporation into the storyline and possible future dungeon and/or trial fights
or
be designed to look like our characters for that Dark Counter part reflection theme they may want the WoD to have.
Hopefully we may meet these Warriors of Darkness in 3.1 Main Scenario.