[And Mulder gives it just as serious consideration, running through all the things he knows about them.]

Most zombie-types would have more obvious signs of dessication- rotting flesh, sunken eyes, putrefying wounds and so on. Although it's not always true that they crave human brains... a voodoo-created zombie wouldn't be out for flesh, for instance. These people seem more self-aware than the average zombie... but who knows what the Malnosso might be capable of. We could be looking at a completely new variety.