DRK in XI was debilitating, if you wanna call it that. Then it was the lolDRK instead of lolDRG (that eventually came around as well). But it was a heavy DPS job with some dark magic thrown in there, not very powerful but it was there. Mainly Absorb spells, drains, and spikes. There were elemental spells, but, well you can imagine. That's what BLM's are for ^.^

Dark Knight