Little is known about these fiends. A smiling Dungeon Imp appeared in Gruntburg before an unknown adventurer was granted access to a secret meat closet. After the adventurer had successfully solved the Riddle of the Chasm, the Dungeon Imp looked disappointed and before vanishing mentioned that "the chasm isn't going to be happy, that's for sure. Maybe we can fool it with some hellhound bones..."

SOURCE(S): Zork Zero (sample transcript)