| 0 | Omactivate! | cover | 1 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho] |
| 1 | - | blank page(s) | 1 | | |
| 2 | Omactivate! | credits, title page | 4 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho]; Sweet Leilani |
| 3 | O.M.A.C. | illustration | 1 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho] |
| 4 | Office Management Amidst Chaos | comic story | 20 | script: Keith Giffen, Dan DiDio; pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi; letters: Travis Lanham | Jody Robbins; Tony Jay; O.M.A.C. [Kevin Kho]; Brother Eye; Martin Welman; Mokkari; Dubbilex; Gobblers |
| 5 | - | blank page(s) | 1 | | |
| 6 | Massive Attack! | illustration | 2 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho]; Amazing Man [Rocker Bonn] |
| 7 | Odd Meals Assure Confrontation | comic story | 20 | script: Keith Giffen, Dan DiDio; pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi; letters: Travis Lanham | O.M.A.C. [Kevin Kho]; Brother Eye; Cadmus Industries; Dubbilex; Sarge Steel; Checkmate; Susie (waitress); Amazing Man [Rocker Bonn]; Cletus (sheriff); Bertram (deputy); Maxwell Lord |
| 8 | Mind-Blowing Action! Psyched-Out by the Psi-Fi Man! | illustration | 2 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho]; Psi-Fi Man [Professor Arous] |
| 9 | Offensive Meetings, Antagonistic Communications | comic story | 20 | script: Dan DiDio, Keith Giffen; pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi; letters: Travis Lanham | O.M.A.C. [Kevin Kho]; Brother Eye; Jody Robbins; Psi-Fi Man [Professor Arous]; Maxwell Lord; Checkmate; Sarge Steel; Maribel; Little Knipper |
| 10 | No Signal! No Hope! No Way Out! | illustration | 2 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho]; Bio-Gators |
| 11 | Offline Messaging, Annoying Circumstances | comic story | 20 | script: Dan DiDio; pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi; letters: Travis Lanham | O.M.A.C. [Kevin Kho]; Brother Eye; Checkmate [Maxwell Lord; Sarge Steel]; Frankenstein; Jody Robbins; Mrs. Lockerby; Mokarri; Bio-Gators |
| 12 | Battle of the Beasts! | illustration | 2 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho]; Frankenstein |
| 13 | Occasionally Monsters Accidentally Crossover | comic story | 20 | script: Dan DiDio, Jeff Lemire, Keith Giffen; pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi; letters: Travis Lanham | S.H.A.D.E. [Father Time; Frankenstein; Belroy]; Checkmate [Maxwell Lord; Sergeant Steel]; O.M.A.C. [Kevin Kho]; Leilani Lugo [Sweet Leilani] (introduction); Brother Eye; Mokarri; Grand Director [Desaad] |
| 14 | She Will Do You Wrong! | illustration | 2 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho]; Sweet Leilani |
| 15 | One More Amorous Conflict | comic story | 20 | script: Dan DiDio, Keith Giffen; pencils: Scott Kolins; inks: Scott Koblish; colors: Hi-Fi; letters: Travis Lanham | O.M.A.C. [Kevin Kho]; Brother Eye; Checkmate [Maxwell Lord]; Jody Robbins; Sweet Leilani; Mokkari; Tony Jay |
| 16 | Can Anyone Survive the Factory of Evil?! | illustration | 2 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho] |
| 17 | Overnight, Mysterious Animals Converse | comic story | 20 | script: Dan DiDio; pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi; letters: Travis Lanham | O.M.A.C. [Kevin Kho]; Brother Eye; Checkmate; Superman [Clark Kent; Kal-El]; King Caeser (death); Red-Beard; Stripesy; Prince Tuftan [also as Tuffy]; Tusky; Simyan [also as Warden Gaym] |
| 18 | The End of... O.M.A.C. | illustration | 2 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho] |
| 19 | Omit, Mutilate, and Cancel | comic story | 20 | script: Dan DiDio, Keith Giffen; pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi; letters: Travis Lanham | O.M.A.C. [Kevin Kho]; Brother Eye; Checkmate [Maribel; Maxwell Lord; Sarge Steel]; Jody Robbins; Mokkari |
| 20 | Art Gallery | illustration | 1 | pencils: Keith Giffen | O.M.A.C. [Kevin Kho] |
| 21 | Initial Sketch | illustration | 2 | pencils: Jim Lee; colors: Jim Lee; letters: Jim Lee | O.M.A.C. |
| 22 | Initial Designs | illustration | 4 | pencils: Keith Giffen; inks: Keith Giffen | O.M.A.C. [Kevin Kho]; Psi-Fi Man (labeled as Psimon); Sweet Leilani |
| 23 | #1 Interior Rejected First Draft Pencils | comic story | 2 | script: Dan DiDio, Keith Giffen; pencils: Keith Giffen | O.M.A.C. [Kevin Kho] |
| 24 | Initial #1 Cover Art | illustration | 1 | pencils: Keith Giffen; inks: Scott Koblish | O.M.A.C. [Kevin Kho] |
| 25 | Variant #1 Cover | illustration | 1 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho] |
| 26 | O.M.A.C. | illustration | 1 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho] |
| 27 | - | blank page(s) | 1 | | |
| 28 | One Machine Attack Construct | promo (ad from the publisher) | 1 | pencils: Keith Giffen; inks: Scott Koblish; colors: Hi-Fi | O.M.A.C. [Kevin Kho] |