It makes sense for the most powerful demon in the Abyss to carry this prefix. They say hell is other people, after all. As the prototypical monster, all [prefix]-gorgons will be based on it. Presumably, all gorgons look similar, but the demogorgon is extra fancy because it's in charge.
The usual state of affairs. No gorgons about. That will change if the Demogorgon's plan succeeds.
Two horrible human heads, for horrible human arms, and two horrible human legs. A parody gorgon created in the Abyss for amusement only.
If the demogorgon has 2 baboon heads, tentacle arms, and chicken legs, the Antigorgon must have no head, tiny human limbs, and regular legs. Some sort of peaceful divine akephaloi?
The messengers of the Demogorgon. Apostles. They look like tree-squid-lemur things. Not bright but very quick.
GorgonocracyRule by Monster
Or in this case, rule by demogorgon. One man, one vote, two heads, four lovin' arms and all them suckers.
An instrument for detecting gorgons. Sometimes referred to as "HP", "Sanity" or, "Hirelings".
The distance from the demogorgon's torso to the tip of one tentacle. Fluctuates. Will be used as the new standard of measurement when the demogorgon takes over.
Possibly an ally. Possibly you, if you kill one and want to gain strange powers.
A really big gorgon. The size of a village, with dozens of cillia-tentacles and two heads like excavator buckets. Also known as a macrogorgon.
A really tiny gorgon. Gets into your bloodstream via your ear and starts eating your lungs and gallbladder. Causes some diseases. Can be lured out with fruit. Also known as a microgorgon.
When the demogorgon takes over and starts writing laws (!), it'l be a legigorgon. The lex gorgoni is going to be a very strange law code, and probably the only one to specify penalties in hectares of flayed skin.
One head, one tentacle, and one chicken leg. Wheels along on the ground like a demented fidget spinner. The demogorgon's half sibling.
The ideal state for any gorgons encountered.
The worst possible state for everyone; the best possible state for the demogorgon.
If you can't have a mortigorgon or an angorgon or a demogorgon, an oligogorgon will have to do.
Two tentacle legs, four arms ending in heads, and two grasping chicken-claws where its head used to be. The demogorgon's younger brother. Kind of a waste of space, but tolerated. Also known as the fratergorgon. Nobody's sure who the mater and pater gorgons are - nobody wants to find out.
A fractal gorgon. Each main branches into two necks. Each smaller neck branches into two more necks. Etc. Tentacles festooned with tentacles. Legs like scaled brooms. Incredibly wise, because it has infinite brains. Harmless, because its claws and teeth are infinitely small. Currently stuck in a cupboard in the Abyss, trying to decide if it will starve to death if it eats one biscuit with infinite heads.