Shapeshifting is the power to alter one's form and appearance into that of another being.
Shapeshifting seems to be a common power in the world of magic since it is used to blend into the world of mortals and to deceive other beings.
While most (if not all) demons seem to possess a limited form of this power, some can fully use it to shift into other people and beings. The demon, Hunter, is capable of shifting into anyone but requires physical contact with his intended target first.
It appears that many or most demons possess a limited form of shapeshifting due to many demons taking on a human form to blend in with the mortal world. These demons can shift between their human and demonic forms but that appears to be the extent of their abilities.
Demons with Demonic Forms