1. Seed of Destruction (1994) by John L Byrne and Mike Mignola
Hellboy (1995) by Mike Mignola
Wolves of St Augustus (1996) by Mike Mignola
Ghost Hellboy (1997) by Mike Mignola
The Lost Army (1997) by Christopher Golden
3. The Chained Coffin and Others (1998) by Mike Mignola
4. Wake the Devil (1997) by Mike Mignola
Odd Jobs (1999) by Christopher Golden and Mike Mignola
Lunch Box (1999) by Mike Mignola
4. The Right Hand of Doom (2002) by Mike Mignola
5. Conqueror Worm (2002) by John L Byrne and Mike Mignola
The Bones of Giants (2003) by Christopher Golden
Hellboy (2004) by Yvonne Navarro
On Earth as It Is in Hell (2005) by Brian Hodge
Unnatural Selection (2006) by Tim Lebbon
The God Machine (2006) by Thomas E Sniegoski
The Black Wedding (2007) by Jim Pascoe
The Dragon Pool (2007) by Christopher Golden
Judgement Bell (2007) by Jim Pascoe
Emerald Hell (2008) by Tom Piccirilli
The Fire Wolves (2009) by Tim Lebbon
The Ice Wolves (2009) by Mark Chadbourn