Serie, miniserie e albi autoconclusivi sull'agenzia governativa che affronta il paranormale.
Nel volume che raccoglie le storie del 2003 è contenuta anche la storia inedita ''Another day at the office'' https://hellboy.fandom.com/wiki/Another_Day_at_the_Office.
''Dark Horse Extra'' #42–44 (December 2001 – February 2002), includes "B.P.R.D." by Christopher Golden and Ryan Sook
MySpace Dark Horse Presents #8–9 (March–April 2008), includes "B.P.R.D.: Revival" by John Arcudi.
Dark Horse Presents #8 (January 2012), includes An Unmarked Grave by John Arcudi and Duncan Fegredo.
