| Issue | #5 |
| Published | October 1961 |
| Frequency | monthly |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | Stan Lee |
| Notes | Distributed to newstands in July 1961. This issue includes 10 pages of paid advertisements. Distribution date from Joseph Marek's Marvel Comics Group history website. |
| Characters | Monsteroso |
| Genre | monsters |
| Pencils | Jack Kirby; Steve Ditko (foreground figures) |
| Inks | Dick Ayers; Steve Ditko (foreground figures) |
| Notes | Art credits from Nick Caputo via the GCD Errors List, 7 January 2005. |
| Reprinted | in Monsters on the Prowl (Marvel, 1971 series) #28 (June 1974); in Amazing Fantasy Omnibus (Marvel, 2007 series) #[nn] (2007) |
| Characters | Monsteroso; Phil; Ethel |
| Synopsis | A circus owner finds a dead alien in Africa and brings it to the United States for a museum. The alien turns out to be alive, and then goes on a rampage. It turns out that it is only a confused child, and its parents arrive to retrieve it. |
| Genre | monsters |
| Script | Stan Lee |
| Pencils | Jack Kirby |
| Inks | Dick Ayers |
| Notes | This story is divided into two parts: an untitled part one (6 pp) and part two—"Monsteroso" (7 pp). Job number from Tom Lammers and Ger Apeldoorn via the Atlas/Timely discussion group. Writer credit from George Olshevsky's Marvel Comics Index. |
| Reprinted | in Monsters on the Prowl (Marvel, 1971 series) #28 (June 1974); in Amazing Fantasy Omnibus (Marvel, 2007 series) #[nn] (2007) |
| Characters | Bob Dixon |
| Synopsis | A TV repairman learns to see past electronics when he finds little people in a set. |
| Genre | occult |
| Letters | typeset |
| Notes | Text story with illustration. |
| Reprinted | from Marvel Tales (Marvel, 1949 series) #145 (April 1956) [originally titled "The Test"]; in Amazing Fantasy Omnibus (Marvel, 2007 series) #[nn] (2007) |
| Characters | Henry Fletcher; Tom Smith |
| Synopsis | A brilliant scientist believes that human ingenuity is guided by unseen advanced creatures, not knowing that his janitor is one such creature. |
| Genre | science fiction |
| Script | Stan Lee |
| Pencils | Don Heck |
| Inks | Don Heck |
| Notes | Job number from Tom Lammers and Ger Apeldoorn via the Atlas/Timely discussion group. Writer credit from George Olshevsky's Marvel Comics Index. |
| Reprinted | in Amazing Fantasy Omnibus (Marvel, 2007 series) #[nn] (2007) |
| Characters | Horace |
| Synopsis | A practical joker thinks that aliens are his victims playing a joke on him, but they are real aliens and take him to an offworld zoo. |
| Genre | science fiction |
| Script | Stan Lee |
| Pencils | Steve Ditko |
| Inks | Steve Ditko |
| Notes | Job number from Tom Lammers and Ger Apeldoorn via the Atlas/Timely discussion group. Writer credit from Georgew Olshevsky's Marvel Comics Index. |
| Reprinted | in Monsters on the Prowl (Marvel, 1971 series) #29 (August 1974); in Amazing Fantasy Omnibus (Marvel, 2007 series) #[nn] (2007) |