D'jak was the first and last Obelisk Grand Master of the Dark Jedi Brotherhood. Nothing was known about him other than the fact that he was a true master of the saber. It was said that he created a holocron which was able to teach even a non-Force-sensitive to master all the lightsaber styles. During his rule as grandmaster, the brotherhoods soldiers were feared throughout the galaxy for their blood lust and combat prowess.