The Ashen Kingdom
Demons are fairly common in the Forest. They are stupid creatures, only occasionally capable of limited speech. Demons seem to delight in violence, attacking anything moving. Only during a war, under the direct control of a witch, are demons capable of working in groups or with other members of the Forest.
Demons are physically powerful and often associated with acid or poison. The most effective weapon against a demon is fire, though silver has been shown to repel them, at least temporarily.