The Maw Vermin’s exact origins are still a mystery—are they horribly mutated ratlings who succumbed to Drakkenheim's contamination or something more sinister? It may have been a rat that fed on too much delerium or the sickly scavengers of another dimension. Some ratlings worship Maw Vermin as harbingers of the Rat God, assuming it is the closest a ratling can get to becoming a ratling angel. Some ratlings endlessly gorge on delerium, hoping to transform into a Maw Vermin to be closer to their god.