It’s also highly unusual that elves were depicted this way, considering most fantasy stories hold them in high regard as being magical beings seeing themselves above humanity for reasons that are normally geniunely sound (Better moral compass, natural magical talents… Whereas in Harry Potter it’s the exact opposite, humanity seems to be the highest creature and Elves feel like to squabble before them…
Have you never heard of Santa’s elves? Or Elves in Shakespeare’s ‘A Midsummer Night’s Dream’?