| Issue | #12 |
| Published | March 2010 |
| Cover Price | 3.99 USD |
| Pages | 36 |
| Editing | Matt Gagnon |
| Notes | Covers A and B shipped in equal quantities, with Cover C a 1-in-10 retailer incentive. Per indicia: Copyright 2010 Boom! Entertainment Inc. Printed in Canada by World Color Press, Inc., 2010-03-10. |
| Characters | Modeus; The Plutonian |
| Genre | Superhero |
| Pencils | Paul Azaceta |
| Inks | Paul Azaceta |
| Colors | Andrew Dalhouse |
| Characters | Bette Noir |
| Genre | Superhero |
| Pencils | Dan Panosian (signed) |
| Inks | Dan Panosian (signed) |
| Colors | Dan Panosian (signed) |
| Characters | The Plutonian |
| Genre | Superhero |
| Pencils | Jeffrey Spokes |
| Inks | Jeffrey Spokes |
| Colors | Jeffrey Spokes |
| Notes | Spokes' variant covers to #1-12 have spelled out "Irredeemable". This cover features the final E. |
| Characters | The Plutonian; The Hornet; Sarah [The Hornet's daughter]; Qubit; Samsara; Kaidan; Gilgamos; Volt; Bette Noir; Scylla; Charybdis; Modeus |
| Pencils | Peter Krause |
| Inks | Peter Krause |
| Colors | Andrew Dalhouse |
| Letters | ? (design); typeset |
| Notes | The inside front cover has head shots of cast from previous issues and recap of story so far, plus logo, credits, and indicia set against negative red-&-black detail of #1's Cover A. |
| Characters | The Paradigm [The Survivor [Charybdis]; Volt; Bette Noir; Gilgamos; Kaidan; Qubit]; Orian; The Plutonian; Modeus; Samsara (body only); Anita Daniel (death); Loren Daniel (death); Joey Daniel |
| Synopsis | The Plutonian vents at his former foster siblings as the remaining members of The Paradigm fight Orian and the US military. |
| Genre | Superhero |
| Script | Mark Waid |
| Pencils | Diego Barreto (pgs. 1-11); Peter Krause (pgs. 12-22) |
| Inks | Diego Barreto (pgs. 1-11); Peter Krause (pgs. 12-22) |
| Colors | Andrew Dalhouse |
| Letters | Ed Dukeshire |
| Notes | Story is untitled beyond series title. First lines of dialogue: "Wow. This is really not going to go well for you." |
| Pencils | Julian Totino Tedesco |
| Inks | Julian Totino Tedesco |
| Colors | Julian Totino Tedesco |
| Notes | The first issue of Codebreakers and its 5-page preview in this issue are hyped with cover art. |
| Characters | Stanley Grouse (introduction); Lindsay Abbott (introduction); Malcolm Whiteweather (introduction); Donald Garner (introduction) |
| Genre | Spy |
| Script | Cary Malloy |
| Pencils | Scott Godlewski |
| Inks | Scott Godlewski |
| Colors | Stephen Downer |
| Letters | Johnny Lowe |
| Editing | Dafna Pleban |
| Notes | Five pages of the story from Codebreakers #1 are excerpted. |
| Reprinted | from Codebreakers (Boom! Studios, 2009 series) #1 (April 2010) [as preview] |
| Script | Matt Gagnon; Declan Shalvey; Emma Rios; Julian Totino Tedesco; Tony Parker; Matt Cossin; Damian Couceiro; Peter Krause; Will Sliney; Minck Oosterveer |
| Pencils | various |
| Inks | various |
| Colors | various |
| Letters | typeset |
| Notes | Gagnon shares tips from Boom! artists in the "Tick... Tick... Tick..." column. Page also includes Boom! masthead and small repros of covers to upcoming releases. |
| Script | various |
| Pencils | various |
| Inks | various |
| Colors | various |
| Letters | various |
| Notes | The final interior pages, inside back cover, and back cover respectively promote the first Anchor trade-paperback collection, with art from the cover; the Emerald City Comicon, with Anchor art and Boom! Studios brand; the Comic Collector Live website, with a screenshot featuring Irredeemable; CGC, "the official grading service of Boom! Studios", with a slabbed Irredeemable #1; and the new ongoing series Farscape: Scorpius, with art from #0 Cover A. |