Without googling, can anyone think of any actors (or actresses for that matter), who have portrayed both Dracula and Frankenstein? Off-hand Sir Christopher Lee is the only one I could think of.
Bela Lugosi played DRACULA (1931) and in ABBOTT AND COSTELLO MEET FRANKENSTEIN (1948), and the Monster in FRANKENSTEIN MEETS THE WOLF MAN (1943). Side note- Bela was also slated to appear as the Monster in FRANKENSTEIN (1931) but for whatever reason, either turned it down or James Whale recasted it.
Lon Chaney Jr. played Dracula in SON OF DRACULA (1943)-and no, he wasn't Dracula's "son" either; and the Monster in the GHOST OF FRANKENSTEIN (1942).
RC, I love your knowledge of old movies. :)
Here's a preproduction ad for FRANKENSTEIN with Bela as the Monster-
(https://i.imgur.com/6rdPP7z.jpg) (https://lunapic.com)