Probably custom, but might be based on something existing...

Ugly, very.

My guess would be that the whole thing was made by hand.

ok...
but... what font this logo is based?

Since when were Vampires interested in type?

You could also mess around with Mason Sans from Emigre, which is available.

http://www.emigre.com/dp/getfontpage.php?PMasSaB.html

I don't think it's based on anything, frankly.

Fallen Angel, the only typeface I know of that slightly
resembles your sample is Carlos Segura's Neo Bold.
Unfortunately it looks like it's not available anymore,
as are quite a number of T-26 early output.

Dan, please be courteous to our visitors. I'm sure you
meant it as a joke, but still...

Fallen Angel -- I can't seem to find anything that would give you a good head start. Is it the blackletter feeling that you like about it? You could do a search for EVIL at myfonts.

===

FYI -- I was a vampire (and Lestat my true love) in my previous life (or at least during my early twenties).

Another suggestion -- Check out PsyOps -- They have some similarish* faces.

*my new word, hope it doesn't offend too many people. Hehe!

I knew there was another one similar to Neo Bold: Hindenburg

franco

Que mierda, yo queria bajar la fuente, para chingarlos!!

That last comment says, "What the f**k, I wanted to download the source, to kill them!"

Things are getting interesting.