Goblin

Goblins are short, humanoid creatures similar to kobolds.

According to Wiedźmin: Gra Wyobraźni PnP RPG, goblins and kobolds are the same race. They are gnome-sized, savage, mischievous humanoid creatures that live mostly underground. They hate daylight and are active above ground only at night. A single goblin isn't really dangerous, but can be quite a pest. They piss in people's milk, vandalize houses or steal chickens.

Other work of Andrzej Sapkowski
Goblins are mentioned in The Eye of Yrrhedes PnP RPG as savage race making alliances with kobolds, ogres and orcs. Their language is Goblin Speech.

The author also wrote a feuilleton titled ''Ya hoi! Ya hoi! Ya harri hoi!'' about the origin and role of goblins, orcs and similar creatures in the fantasy genre. A copy of it can be found here.

Goblin Goblin