This was supposed to imply him drinking the blood of his many former victims as a practicing vampire.

The rivers would have to run red with the blood of their victims.

"Do you really want to touch me while I've still got the blood of my victims on me?"

She often bathed in the blood of her victims to restore any looks that wore away due to aging.

The earliest stories claim that this monster sucked the blood of its victims.

He liked the blood of his victims too, of course.

Was that filled with the blood of her victims?

And how they needed the blood of their victims.

Ye'd no doubt drink the blood of your victims on the marriage altar, too, would ye not?

See them learn to drink the hot red blood of their victims!