In simple terms, an "evil wizard" refers to a fictional character who possesses magical powers and uses them to do bad or harmful things. They are typically portrayed as the antagonist in stories or movies.
Sentences with «evil wizard»
Who knew that a «food» could be compared to a fictional evil wizard? (ecochildsplay.com)
But I thought him snapping the wand was good, because now some other evil wizard can not go searching for the wand in the future. (firstshowing.net)
A magic portal transports the little blue people to Manhattan, where they must find a way back to their village before evil wizard Gargamel can find them. (latimes.com)