| Issue | #4 |
| Published | April 1941 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | Victor Fox |
| Pencils | Alex Blum? |
| Inks | Alex Blum? |
| Characters | John Ladron (Villain; Intro) |
| Pencils | Alex Blum? |
| Inks | Alex Blum? |
| Characters | Joe Remy (Villain; Intro); Joan (Prof. Brun's niece; Intro) |
| Pencils | Alex Blum? |
| Inks | Alex Blum? |
| Characters | Fritz Kohler (Villain; Intro) |
| Pencils | ? [as Willis B. Rensie] |
| Characters | Dr. Parnell (Villain; Intro) |
| Pencils | Alex Blum? |
| Inks | Alex Blum? |
| Script | Nathaniel Nitkin (N. N. Nathaniel) |
| Letters | typeset |
| Characters | Fu Chu (Villain) |
| Pencils | ? (Anthony Brooks) |
| Pencils | ? (Floyd Kelly) |
| Notes | last app. in BLUE BEETLE #6 |