0 (in stories) a small, ugly creature that is harmful to humans
1 a small, imaginary, usually ugly creature who plays tricks on people
The former reading entails the existence of goblins, if the quantifier carries the presupposition that its restriction is non-empty.
But what do ugly goblins and formless monsters have to do with realism?
I held her on high - the goblin!
It is more in the nature of goblin fruit.
If you kept bogies and goblins away from children, they would make them up for themselves.
I do not think goblins are relevant to this discussion.
The retail price index looks so simple and natural, but it is goblin fruit.
The old man went to his third and largest stall to summon his mightiest goblins.