Hellboy: [Offering a beer.] Here. Drink up.
Abe Sapien: Oh, no, my body is a temple.
Hellboy: Well, now it's an amusement park.
After the golden army bots awaken, it zooms out to show how big the army is, when they do the prince and princess disappear in the background, then reappear.
When Hellboy hears Abe's music in the hallway, the display he is leaning against has Kroenen's mask from the first film.