They appear as ghostly entities shrouded in a ragged cloak with their glowing eyes visible in the darkness of their hoods. They also have four horns on their heads, emerging from beneath the cloak - the shape of the horns varies between species.
Wraiths a mid-tier foes that generally specialize in their relevant elements with Dark mixed in. They can also stab players with spikes that emerge from their sleeves. Many Wraiths are also able to use skills that inflict Death.
EBF5 Wraiths are notable for targeting players based on their resistances. They are also affected by equipment that scares ghosts. However, whether they will Surrender or go Berserk depends on the species.
All Wraiths are weak to Holy and Wind while absorbing Dark and whatever element they are based off of; in EBF5, the Flame, Origami and Frost Wraiths have inverted Holy and Dark resistances.
In EBF4, Wraiths are noteworthy for being the only common enemy that drops Donuts. While the chances of this are a pathetic 1%, this is the only way to get additional Magic Defence boosts without using Battle Mountain or the eventually-unaffordable Rare Shop. Farming this way is not advised.