Wolves at the Gate is definitely my favorite arc of the Buffy comics.
“My boy, I was never an ordinary vampire. Or did you forget who I used to be? I’ve killed more men than God’s plagues combined. And that was before I started eating people for fun.
“The fields of Europe used to steam with the blood of my enemies. Trust me, the vampire’s the least of your concerns. It’s the old man you need to worry about.”