How to Explain a Vampire's Back Story

"I am very concerned with propriety and ethics. It's part of I'm C3PO to a great extent," he said. "When I encounter a personality or an intelligence that is unencumbered by these things, it's my brain goes, how the hell does that work? This is kind of terrifying." He added: "It's because we just look at them and we go, How is their brain work?"