Which reminds me

I saw the original “Frankenstein” the other day (a complete bowdlerization of the novel) and was stunned to discover that the hunchbacked assistant (who is, of course, nowhere to be found in the novel) is named… “Fritz”!

“Fritz”?! What about “Igor”?

Which got me wondering. How did the name “Igor” become the archetypal hunchback name in horror movies if the hunchback on “Frankenstein” is named “Fritz”? Unleash the power of the blog to enlighten me, if you can.