The Viy of Maribor was a horrible creature conjured by the mage Alzur. It was giant centipede, but larger than any other of its kind. It destroyed the elven city upon which Maribor was later built.
Viys are also possibly translated as "myriapodans".
The Witcher
- In-game books The Double Cross of Alzur and tower mage's book mention this terror. The former allegedly contains the instructions on how to create one.