If you just said Bone Hydra, I'd have known what you referred to.

[This guy. THIS GUY. What is his deal? Alucard folds his arms and considers his options. Which, admittedly, are not many. Even Death did not know he was here, though he probably could predict it eventually. And the chambers change on their own, to ensure the dead stay where they are.]

Do what you want, then.

The people of the surface call me Alucard.