Dragon Quest X is getting a major update soon, and it's going to add the new job Demon Knight. The Demon Knight can equipe swords, knives, greatswords, scythes, and shields. Demon Knights can power themselves up using “Veil of Darkness,” which is made possible through “Demonic Wave.” Demonic Wave will fill up as you take damage, and once the meter fills, Veil of Darkness can be used.
There's also the “Disruptive Wave” skill that nullifies all stat changes, and the ranged skilled “Dark Matter” that surrounds the Demon Knight. This has an additional effect of lowering the enemy’s resistance to dark elements.