Hellsing?

And finally your question is answered.

Yukari Yakumo of the touhou series.

Now you know.

There is some similarity, though. Yukari and Alucard are pretty much the overpowered god-mode characters in their respective series.

Gap him into the sun. Or a black hole. Or into five different places at once. The fun never ends with Yukarin!

I'd still Tap dAt