Demon is a nice term, perhaps because it owes its current meaning to the bad appropriation by christianity. The term (greek: daimon) originally meant either lesser gods (benevolent by and large) or some aspect of a person's character, like a driving force of creation. Socrates famously spoke of his "daimon" who urged him to do things, like learn music - and one of the accusations in the trial of Socrates was that he "introduces new daimons" (kaina daimonia).
In the era of mystical gnostic religions, in the first centuries AD, a hybrid of greek philosophy and christiany (in a very general sense) stuff appeared, where you'd also occasionally find "kakodemons"; mean demons. Christianity just usurped the notion to fill the world with even more nasty stuff
But this thread is about interesting demons or - if you will - endiaferontodemons
The Erinyes , aka "Zeus's winged dogs", can be seen as a type of what now is identified as demon. They were sent by the gods to punish anyone who committed hubris, and according to a nice aphorism by Heraklitos: "Not even the Sun can exceed what was allotted to him, for if he does then the Erinyes will find him and see that he faces trial".
The three Gorgones (two of which were immortal; the third one was killed by Perseas) also look like demons in their vase depictions. While the Erinyes at times have nice-looking female forms, and at others are nightmarish, the two immortal Gorgones look like a strange ant in most depictions, and bearded horrible old women in others.
Although they aren't really interested in dealing with humans, and not even the gods can stand to look at them - much like with other monsters, like the Scylla, the "immortal evil".
Yes, little fish... Come to the Octopus...
In the era of mystical gnostic religions, in the first centuries AD, a hybrid of greek philosophy and christiany (in a very general sense) stuff appeared, where you'd also occasionally find "kakodemons"; mean demons. Christianity just usurped the notion to fill the world with even more nasty stuff

But this thread is about interesting demons or - if you will - endiaferontodemons

The Erinyes , aka "Zeus's winged dogs", can be seen as a type of what now is identified as demon. They were sent by the gods to punish anyone who committed hubris, and according to a nice aphorism by Heraklitos: "Not even the Sun can exceed what was allotted to him, for if he does then the Erinyes will find him and see that he faces trial".
The three Gorgones (two of which were immortal; the third one was killed by Perseas) also look like demons in their vase depictions. While the Erinyes at times have nice-looking female forms, and at others are nightmarish, the two immortal Gorgones look like a strange ant in most depictions, and bearded horrible old women in others.
Although they aren't really interested in dealing with humans, and not even the gods can stand to look at them - much like with other monsters, like the Scylla, the "immortal evil".

Yes, little fish... Come to the Octopus...
