Traits attributed to traditional folkloric creatures that are actually pretty new?

Traits attributed to traditional folkloric creatures that are actually pretty new?

I mean the ways vampires or faeries are “supposed” to be or act that is actually pretty new and has no basis in folklore.

Faeries the Seelie and Unseelie court as two competing entities is pretty new and originated in the eighteen century in Scotland.

Actually most folklore about faeries is pretty new as “fae” was the general word for nature spirit and was like European Yokai.