| Issue | #v1#1 |
| Published | July 1940 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | Aaron A. Wyn |
| Genre | Superhero |
| Characters | Vulcan (Intro, Origin); Tom Warren (Intro) |
| Characters | Corporal Flint (introduction); Scar-Face Pontois (villain, introduction) |
| Script | Lester Dent (author); ? [adaptation] |
| Notes | Adapted from "The Frozen Phantom" by Lester Dent, 1933. The hero's name is changed, but not the villains. Notes info by Will Murray (Per Sandell, 2005-01-22) |
| Characters | Magno (intro); The Octopus (villain, intro, death; Prof. Beale) |
| Script | Paul Chadwick (author); ? (adaptation) |
| Notes | Adapted from the Secret Agent X-story "Octopus of Crime" by Paul Chadwick, Sept 1934. |
| Characters | Sky Smith (Intro) |
| Characters | Q-13 (first appearance); Countess Alessa (first appearance; villain); Prince Dragoff (first appearance; villain); Messedy (first appearance; villain; death) |
| Letters | Typeset |
| Characters | Larry Harrigan (first appearance) |