Proposed Canon
If Archons were a force for "Good", Daemons would plausibly be the “Evil”/“Chaotic” equivalent of Archons. They most likely have some form of natural magic, and may be connected to an Arkentool. If there is an Arkenshovel, Daemons would be a possible link to it, 'digging' them out of whatever passes for Hell in Erfworld.
It is possible that Pokedaemon are natural allies of this type.