According to the preview, Vlad the Impaler is in
GURPS Who's Who 1. I either don't have a copy, or do, but can't find it (not sure, but it's been out long enough that I could have bought it, put it in my room somewhere, and forgotten it years ago). It's for 3e, but someone who has a copy should be ale to help develop the character sheet of this Dracula, without violating copyright or forum rules, I'm pretty sure.