| 0 | Scourge of Neptune | cover | 1 | pencils: Dan Zolnerowich; inks: Dan Zolnerowich | |
| 1 | - | comic story | 7 | script: Ross Gallun; pencils: Joe Doolin; inks: Joe Doolin | Mars (introduction, villain); John Freeman (dictator of Axia, introduction) |
| 2 | - | comic story | 6 | script: Olaf Bjorn; pencils: Al Walker; inks: Al Walker | The Snomads (introduction, villains); Hatrack (introduction, a reindeer); Prof. Squint (a penguin) |
| 3 | - | comic story | 7 | pencils: Frank Schwarz; inks: Frank Schwarz | The Fog Men (introduction, villains); their Queen (introduction, villain) |
| 4 | - | comic story | 7 | script: Douglas McKee; pencils: Frank Schwarz, George Carl Wilhelms; inks: Frank Schwarz, George Carl Wilhelms | Jack North; Queen of Vanam; a Lion Man (villain, introduction, death); King Yurk (introduction, death); the Cliff Men (introduction, death) |
| 5 | Planet of the White Death | text story | 2 | script: Bjorn Tagens | |
| 6 | - | comic story | 8 | pencils: John Celardo, Leo Morey; inks: John Celardo, Leo Morey | The Zarians (introduction, villains) |
| 7 | - | comic story | 6 | pencils: George Carl Wilhelms; inks: George Carl Wilhelms | Queen Vona (introduction); the Tarmians (introduction); King Zone; Princess Melana; Farg (introduction, villain, death); barbarian hillmen (introduction); hillmen's chief (introduction, death) |
| 8 | Scourge of Neptune | comic story | 8 | script: Hugh Fitzhugh; pencils: Al Gabriele; inks: Al Gabriele | Vara; Sarku (villain); the Amphins (introduction, villains); Nulor (introduction) |
| 9 | - | comic story | 5 | pencils: Seymour Reit; inks: Seymour Reit | Auro, Hardwich |
| 10 | - | comic story | 7 | script: ? [as Leonardo Vinci] | The Space Baron (villain, introduction); Nomi (his sister, introduction); Dorset (introduction); Kavon (introduction); Sharyn (his daughter) |