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Hellboy: In Service of the Demon
- Jier: 2008
- Lân: Hungary, United States of America
- Sjenre: Documentary
- Studio: Universal Studios Home Entertainment
- Keyword: movie business, making of
- Direkteur: Javier Soto
- Cast: Guillermo del Toro, Mike Mignola, Ron Perlman, Lloyd Levin, Lawrence Gordon, Doug Jones