| Issue | #23 |
| Published | June 1941 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | Victor Fox |
| Characters | Blue Beetle [Dan Garrett] |
| Pencils | Chuck Cuidera |
| Inks | Chuck Cuidera |
| Characters | Blue Beetle [Dan Garrett]; Gat Arat (first appearance; villain); Pinsty (first appearance; villain; death); Mimy (first appearance; villain; death) |
| Pencils | Charles Nicholas |
| Inks | Charles Nicholas |
| Characters | Rex Dexter; Ugly Queen (villain) |
| Script | Dick Briefer |
| Pencils | Dick Briefer |
| Inks | Dick Briefer |
| Characters | Green Mask [Michael Shelby]; Remy (first appearance; villain); Lefty Gordon (first appearance; villain; death) |
| Pencils | Walter Frehm |
| Inks | Walter Frehm |
| Characters | Lt. Drake; Frau Izan (first appearance; villain) |
| Pencils | Paul Gustavson? |
| Inks | Paul Gustavson? |
| Characters | Chen Chang (villain) |
| Pencils | Charles Winter? |
| Inks | Charles Winter? |
| Notes | next app. in GREEN MASK #5 |
| Script | Nathaniel Nitkin [as N. N. Nathaniel] |
| Letters | typeset |
| Characters | Lynx [Jim]; Rook (villain); Elmo Vance (first appearance; villain) |
| Pencils | ? (Norton Kingsley) |
| Characters | D-13 [Richard Anthony]; Hans Kirchoff (first appearance; villain); Dino (first appearance; villain; death) |
| Script | Bert Whitman? |
| Pencils | Bert Whitman? |
| Inks | Bert Whitman? |
| Characters | Ahmed (first appearance; villain) |
| Pencils | Pierce Rice? |