Ann O'Brien
- Also known as
Appearances
- San Diego Comic Con Comics #2 — 1993-08-00
- Godzilla vs. Barkley #[nn] — 1993-12-00
- Dark Horse Presents #80 — 1993-12-13
- Danger Unlimited #1 — 1994-02-00
- Hellboy: Seed of Destruction #1 — 1994-03-00
- Hellboy: Seed of Destruction #2 — 1994-04-00
- Martha Washington Goes to War #1 — 1994-05-00
- Predator: Bad Blood #3 — 1994-05-00
- John Byrne's Next Men #25 — 1994-05-00
- Hellboy: Seed of Destruction #3 — 1994-05-00
- Hellboy: Seed of Destruction #4 — 1994-06-00
- Martha Washington Goes to War #2 — 1994-06-00
- Martha Washington Goes to War #3 — 1994-07-00
- Hellboy #[1] — 1994-10-00
- Hellboy: Seed of Destruction #[nn] — 1995-03-00
- Dark Horse Presents #100-0 — 1995-07-20
- Dark Horse Presents #100-5 — 1995-08-31
- Gen 13 #13 [ABC Wizard Jim Lee Tribute Edition] #[nn] — 1996-00-00
- Monkeyman and O'Brien Special #[nn] — 1996-02-00
- Godzilla #12 — 1996-06-00
- Tarzan / John Carter: Warlords of Mars #4 — 1996-06-28
- Monkeyman & O'Brien #1 — 1996-07-00
- Godzilla #14 — 1996-07-00
- Monkeyman and O'Brien July's Greatest Comics #[nn] — 1996-07-00
- Nexus #90 (2) — 1996-07-00
- Monkeyman & O'Brien #2 — 1996-08-00
- Art Adams' Creature Features #[nn] — 1996-08-10
- Monkeyman & O'Brien #3 — 1996-09-00
- DV8 #2 — 1996-11-00
- Gen 13 #13C — 1996-11-13
- Dark Horse Presents #118 — 1997-02-00
- Dark Horse Presents #119 — 1997-03-00
- Savage Dragon #41 — 1997-09-00
- Vampirella: Crossover Gallery #1 — 1997-09-10
- Vampirella: Crossover Gallery #1 — 1997-09-10
- Gen 13 #13 A, B & C Collected Edition #[nn] — 1997-11-00
- Dark Horse Extra #2 — 1998-08-00
- Free Speeches #1 — 1998-08-00
- Dark Horse Extra #3 — 1998-09-00
- Dark Horse Extra #5 — 1998-11-00
- Dark Horse Extra #6 — 1998-12-00
- Dark Horse Extra #7 — 1999-01-00
- More Fund Comics #[nn] — 2003-09-00
- Comic Book Encyclopedia #[nn] — 2004-00-00
- Dark Horse Twenty Years #[nn] — 2006-07-05
- Hellboy Library Edition #1 — 2008-05-00
- Hellboy: Seed of Destruction #[nn] — 2008-06-00
- glamourpuss #2 — 2008-07-00
- The CBLDF Presents: Liberty Comics #[nn] — 2008-07-00
- Madman 20th Anniversary Monster! #[nn] — 2012-01-25
- Army of Darkness #1 — 2014-12-00
- Army of Darkness #1 — 2014-12-00
- Army of Darkness #1 — 2014-12-00
- Army of Darkness #1 — 2014-12-00
- Hellboy Omnibus #1 — 2018-05-09
- Madman Library Edition #1 — 2021-06-16