| Issue | #23 |
| Published | August 1956 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Al Fago |
| Characters | Mr. Muscles |
| Synopsis | Mr. Muscles is holding up a steel slab. |
| Genre | superhero |
| Pencils | Charles Nicholas |
| Inks | Vince Alascia |
| Characters | Mr. Muscles; Kid Muscles |
| Genre | superhero |
| Script | Jerry Siegel |
| Pencils | Charles Nicholas |
| Inks | Vince Alascia |
| Reprinted | in Hot 'N Cold Heroes (A-Plus Comics, 1990 series) #1 |
| Characters | Mr. Muscles; Miss Muscles |
| Genre | superhero |
| Script | Jerry Siegel |
| Pencils | Charles Nicholas |
| Inks | Vince Alascia |
| Letters | typeset |
| Characters | Mr. Muscles |
| Synopsis | Mr. Muscles meets an "abominable snowman". |
| Genre | superhero |
| Script | Jerry Siegel |
| Pencils | Charles Nicholas |
| Inks | Vince Alascia |
| Characters | Mr. Muscles; Kid Muscles |
| Genre | superhero |
| Script | Jerry Siegel |
| Pencils | Charles Nicholas |
| Inks | Vince Alascia |
| Pencils | John Forte |
| Inks | John Forte |