Harry Potter and Lord Voldemort, e.g

Usage examples of nemeses.

Otherwise, they keep to the heavy mists that becloud rain-forests and giant waterfalls, for their nemeses are dawn and dusk, those moments before the sun rises and just after it sets.

Like nemeses, they appeared from all sides of the clearing, blocking my every way.

Out in the wilds, Drizzt held confidence that he could survive against whatever nemeses Matron Malice sent after him.