Wiki on “Christian Demonology”: https://infogalactic.com/info/Christian_demonology

Catholic encycyclopedia entries:

Demonology: https://www.newadvent.org/cathen/04713a.htm

Demons: https://www.newadvent.org/cathen/04710a.htm

Demonical Possession: https://www.newadvent.org/cathen/12315a.htm

Devil: https://www.newadvent.org/cathen/04764a.htm

Summa entries related to demons:

https://www.newadvent.org/summa/1064.htm

https://www.newadvent.org/summa/1114.htm

Demons are fallen angels

Any thoughts on the topic of demons?