Hellboy: [Offering a beer.] Here. Drink up.
Abe Sapien: Oh, no, my body is a temple.
Hellboy: Well, now it's an amusement park.
When one of the agents is ambushed by the Tooth Fairies he is reduced to a skeleton, with his teeth still visible. However, it was earlier stated that Tooth Fairies start by eating the teeth, then finish off the rest of a body.
When Hellboy hears Abe's music in the hallway, the display he is leaning against has Kroenen's mask from the first film.