In addition to the sinister obscurity that prevails in Hell, caused by the stifling smoke that rises in dense clouds from the lake of brimstone, there is the presence of frightful demons who increase the pain and torment of the damned.
We read in the legend of St. Anthony the Hermit, that the demons frequently appeared to him under various forms, plaguing and frightening him in indescribable ways. Sometimes they took the shape of wild beasts, lions, bears, dragons or savage dogs; at other times they appeared in human form, that of fierce-looking men, beautiful women, or monsters of hideous aspect. Sometimes they beat and maltreated him so barbarously that they left him half dead; sometimes they caused him such terror by their strange spectral apparitions, that had not God and his Angel guardian come to his aid, he would have incontinently expired.
Now if they did all this to a man of Saintly life, over whom they had no rightful power, what will they not do in Hell to the ungodly sinners who are completely at their mercy?
Doubtless these diabolical spectres, assuming the shape of wild animals, will fall upon the wretched sinners and mishandle them shamefully. This will be a fresh misery for them. No one can imagine what new terrors and torments the ingenuity of these spirits of Hell will devise to harass the damned and pour out on them their devilish malice.