That's a kooky townie then.
But the key is, it could be a kooky Vigilante or a kooky Medium or whatever.
I say go ahead and add the Vampire. On the other hand, Meph, you really should add rarities to roles, so Reporters, Heroic Bodyguards, and Townies are common; Exterminators, Agents, and Vigilantes are uncommon; Telepaths, War Vets, and Guardians are rare; and Watchers, Vampires, and Scientists are super-rare, for example. You do what you want, but it's getting strange to see a Scientist in every single game. Even if you change them around, it will still get odd to see so many powerful and somewhat crazy roles every game. I'm fine with having them and a few showing up, but there's a few too many, at the moment.
Oh, and about the Scientist. If you do add the Vampire in, what happens if the Scientist abducts a Vampire? Does he count as an Alien? Perhaps you should change the Scientist to grab "2 humans and a non-human being", or possibly even changing it so there's several varieties of Scientist and they have a "Scavenger Hunt" style list of beings to grab eg. "a human and 2 non-humans", "3 Humans, one of whom is psychic", "4 specimens of any kind", "2 beings who are willing to kill", or even something specific like "Get the Agent" or "Grab 2 Aliens". There's a lot of things that can be done with the Scientist. On the plus side, you could merge in the Agent Seeker, the Dopp Seeker, and the Cult Seeker. On the down-side, somebody will probably find a way to break it if all the possibilities are public, it would be confusing as hell to see the role list double in size for one role, and just imagining all the work that would have to be done for ONE ROLE is just insane. Again, just throwing ideas out, feel free to ignore them.
Oh, and thank you Meph for making and keeping Paranormal alive for 10 games. You're a really great host, I don't care how many broken-ass roles you make.