I don't see any clear demon there. I see dragons (a scaly body can be seen near), fantastic animals and people. Some with grotesque or angry faces.

A wildboar, a baby over a horse and a warrior can be spotted clearly but, apart of a goat with horns (that is not looking at the spectator and could just be a hunting scene), none of the stereotypical figures associated to demons like stars, 666 numbers, or inverted crosses are seen in the photos

If there are demons, they look much more like Asian demons. Not in the christian tradition at all.