| 0 | - | cover | 1 | script: Stan Lee; pencils: Jack Kirby; inks: Steve Ditko; colors: Stan Goldberg; letters: Artie Simek | Groot |
| 1 | Introduction | foreword, introduction, preface, afterword | 1 | script: Jordan D. White | |
| 2 | I Challenged... Groot! The Monster from Planet X! | cover reprint (on interior page) | 1 | script: Stan Lee; pencils: Jack Kirby; inks: Steve Ditko; colors: Stan Goldberg; letters: Artie Simek | Groot |
| 3 | I Challenged... Groot! The Monster from Planet X! | comic story | 7 | script: Stan Lee, Larry Lieber; pencils: Jack Kirby; inks: Dick Ayers; colors: Stan Goldberg; letters: Ray Holloway | Groot (introduction, origin); Leslie Evans; Alice Evans |
| 4 | Celebrating Kirby 100th | promo (ad from the publisher) | 1 | pencils: Jack Kirby | |
| 5 | Here Comes...The Hulk | cover reprint (on interior page) | 1 | script: Stan Lee; pencils: Jack Kirby; inks: Steve Ditko; colors: Stan Goldberg; letters: Artie Simek | Hulk [Xemnu]; Joe Harper |
| 6 | I Was a Slave of the Living Hulk! | comic story | 13 | script: Stan Lee, Larry Lieber; pencils: Jack Kirby; inks: Dick Ayers; colors: Stan Goldberg; letters: Artie Simek, Ray Holloway | Hulk [Xemnu, later called "the Titan"] (introduction, origin); Joe Harper |
| 7 | - | cover reprint (on interior page) | 1 | pencils: Mike Allred; inks: Mike Allred; colors: Laura Allred | Groot |
| 8 | - | cover reprint (on interior page) | 1 | pencils: Dan Brereton; inks: Dan Brereton; colors: Dan Brereton | Xemnu |
| 9 | The Blip | cover reprint (on interior page) | 1 | pencils: Simon Bisley; inks: Simon Bisley; colors: Simon Bisley | The Blip |
| 10 | Fin Fang Foom; Thor | cover reprint (on interior page) | 1 | pencils: Walter Simonson; inks: Walter Simonson; colors: Laura Martin | Fin Fang Foom; Thor |
| 11 | - | cover reprint (on interior page) | 1 | pencils: Mike Del Mundo; inks: Mike Del Mundo; colors: Mike Del Mundo | Orrgo |
| 12 | Celebrating Jack Kirby 100th | promo (ad from the publisher) | 1 | pencils: Jack Kirby; inks: Jack Kirby | |
| 13 | - | promo (ad from the publisher) | 1 | pencils: Jack Kirby; inks: Jack Kirby | Jack Kirby; Hulk; Thor; Spider-Man; Hercules; Namor the Sub-Mariner; Captain America; Iron Man; Fantastic Four [Human Torch; Mr. Fantastic; Thing]; Black Panther; Silver Surfer; X-Men [Iceman; Beast]; Dr. Doom; Black Knight |