Except that assumes that Dracula is first declension, and it might as much be third declension which would make it Dracules.

Dracula isn't even Latin. It's Slavic declension. His father was Dracul (Dragon), from Emperor Sigismund's Order of the Dragon and he's son of Dracul - syn Dracula.

The Slavic languages, of course, have their own declension patterns, although a common masculine suffix is -y or -i which brings us back to the original Draculi (!).

As far as sound is considering that’s how it’ll be in Hindi as well ;-)

Joota (shoe) — Joote (shoes)