Hellboy Animated: Blood and Iron (2007) - 1 question

The "questions" section is for any random questions that occurred to you while watching this film, or anything you didn't entirely understand, and which Google or the IMDb can't help with. Submit them as a question, and hopefully someone will answer (the bold comments in brackets) - check back regularly. If the answer is wrong, or missing information, please use the "clarify answer" option. Don't feel limited - want to know what music played in a certain scene? Whether this was the first film to use a certain effect? Here's the place to ask!