| 0 | The Twelve | cover | 1 | pencils: Chris Weston; inks: Chris Weston; colors: Chris Weston | Fiery Mask; Mister E; Rockman |
| 1 | Recap and Credits | recap | 1 | pencils: Chris Weston; inks: Chris Weston | Phantom Reporter |
| 2 | Daring Mystery Comics #1 | cover reprint (on interior page) | 1 | pencils: Alex Schomburg; inks: Alex Schomburg | Fiery Mask |
| 3 | The Fantastic Thriller of the Walking Corpses | comic story | 10 | script: Joe Simon; pencils: Joe Simon; inks: Joe Simon; editing: Martin Goodman | Fiery Mask (origin); Zombie Master; Captain Benson |
| 4 | The Strange Case of the Bloodless Corpses | comic story | 10 | script: Joe Simon; pencils: Joe Simon; inks: Joe Simon; editing: Joe Simon | Fiery Mask; Captain Benson; Dr. Sendach |
| 5 | - | comic story | 10 | script: Joe Cal Cagno; pencils: Al Carreño; inks: Al Carreño; editing: Martin Goodman | Mister E; the Vampire; Betty |
| 6 | The Killers of the Sea | comic story | 7 | script: Basil Wolverton; pencils: Basil Wolverton; inks: Basil Wolverton; editing: Joe Simon | Rockman; Zombo |
| 7 | Rockman | comic story | 7 | script: Stan Lee; pencils: Charles Nicholas; inks: Charles Nicholas; editing: Joe Simon | Rockman; Alecia; pixie king; pixies |
| 8 | Daily Bugle Metro Previously in The Twelve | recap | 1 | pencils: Chris Weston; inks: Chris Weston | |
| 9 | Gallery of art for #8 and original art (unpainted) for this issue's cover | promo (ad from the publisher) | 3 | inks: Chris Weston | Black Widow; Electro; Blue Blade; Fiery Mask; Mister E; Rockman |
| 10 | The Twelve #8, on sale in October | promo (ad from the publisher) | 1 | pencils: Paolo Rivera; inks: Paolo Rivera; colors: Paolo Rivera | Black Widow |