The weredemon, &, is a monster that appears in EvilHack. It is a former lesser demon that has been infected by a werewolf, and is the most powerful of the lycanthropes present in the game. They are able to shift into a hell hound-form, d, and can summon actual hell hounds and/or other demons to help them. Like all other lycanthropes, they can infect others with their bite.
Weredemons are the only demon-class monster that can spawn outside of Gehennom.
In 1573, the Parliament of Dole published a decree, permitting
the inhabitants of the Franche-Comte to pursue and kill a
were-wolf or loup-garou, which infested that province,
"notwithstanding the existing laws concerning the chase."
The people were empowered to "assemble with javelins,
halberds, pikes, arquebuses and clubs, to hunt and pursue the
said were-wolf in all places where they could find it, and to
take, burn, and kill it, without incurring any fine or other
penalty." The hunt seems to have been successful, if we may
judge from the fact that the same tribunal in the following
year condemned to be burned a man named Giles Garnier, who
ran on all fours in the forest and fields and devoured little
children, "even on Friday." The poor lycanthrope, it appears,
had as slight respect for ecclesiastical feasts as the French
pig, which was not restrained by any feeling of piety from
eating infants on a fast day.
[ The History of Vampires, by Dudley Wright ]