In Slavic mythology, a Vědmák (Russian: Ведьмак; Ukrainian: Відьмак, Vidmak or Polish: Wiedźmin) is a male witch, the female equivalent (witch) being vedma, but unlike the latter, the vedmak may also possess positive qualities.
For example, they treat people and animals, protect humanity, and force witches to stop doing evil. On the other hand, they are thought to be people connected to the Devil, and are capable of harming other human beings by sending illnesses, killing cattle, spoiling a harvest, etc. The word was also used as an insult. A vedmak can turn into any animal or any object. He is capable of shapeshifting into a horse, a moth, or a wolf. He is also resistant to rusalkas' enchantments.