Evil weapons are granted a will of their own by the powerful energy of the Crystal Line. Evil weapons enslave spirits of the earth called kobolds to do their bidding. They are often spotted near Crags or other forms of Cermet, leading some to speculate that their powers are somehow connected with energy of the Mothercrystals, or otherwise associated with the Zilart.
Those who defeat them are rarely rewarded, if at all. Many evil weapons carry nothing on them, and only a few carry some occasionally needed specialty items, such as keys or maybe a scroll.
Coming in two varieties, Warriors or Red Mages, these strange looking monsters appear almost animalistic in nature due to the kobolds they have possessed, but the evil weapons themselves are arcana. The two jobs look the same and use the same weapon, but can be distinguished by their behavior, with the Red Mage variety able to cast spells.