- Lady Hatton: On an island off the coast of Scotland, something was summoned from the depths of Hell, something that would end mankind.
- Hellboy: And this thing, did it show up?
- Lady Hatton: Oh, yes. You did.
- Ben Daimio: I thought we were supposed to be fighting monsters, not working with them.
- Hellboy: Who are you calling a monster, pal? Have you looked in the mirror recently, Scarface?
- Ben Daimio: Is that meant to be humor?
- Hellboy: Maybe. My therapist does say I rely on jokes as a way to normalize.
- Ben Daimio: Normalize, right. Good luck with that.
- Hellboy: We faced every threat there is, and yet you take me in.
- Professor Bruttenholm: I love you, son.
- Hellboy: You made me a goddamn weapon!
- Ben Daimio: Where's my fucking violin?
- Professor Bruttenholm: Listen up, ladies and gentlemen: out there is a fifth-century sorceress who wants to bring down the curtain on London and the world!
- Hellboy: Great, homework.
- [first lines]
- Professor Bruttenholm: [narrating] The year is 517 A.D., known as the Dark Ages and for fucking good reason. An endless war between the armies of man and creatures of darkness has raged across Britain. And in retribution of man's injustices for creatures, the immortal witch Vivvienne Nimue has spread her deadly plague threatening mankind off the face of the earth. And so at Pendle Hill, beneath an ancient oak tree, King Arthur... Yes, that King Arthur, and his powerful wizard Merlin, were forced to surrender to Nimue, the Queen of Blood.
- Professor Bruttenholm: It takes a real man to hold a knife to his throat every morning without cutting his throat.
- Ben Daimio: Once the casket is secure, you'll be on your first flight out. If the Bureau can put you back in your cage.
- Hellboy: My cage? My cage! I'm gonna ask specifically you clean my sawdust. Can't wait until you smell demon shit, pal!
- Nimue: No more bowing and scraping, my beloveds. That is not what I want. I want an army, long hidden from the eyes of man. I want the forgotten people out of the dark! Those who have lived in dust, who have gnawed on dry bones while dreaming of blood! That is what I want. Give me an army like that and we will make the daytime world weep!