According to a letter written by Grace Everett (Bill Everett's mother) she did most of the research in creating Aman the Amazing-Man.
The character influenced the creation of Peter Cannon, Thunderbolt in Thunderbolt (Charlton, 1966 Series) #1 as well a Iron Fist in Marvel Premiere (Marvel, 1972 series) #15. Once he was in public domain he was used in The Protectors (Malibu, 1992 series) #1 (with other Centaur characters ), in Immortal Iron Fist (Marvel, 2007 series) #12 and in Project Superpowers (Dynamite Entertainment, 2008 series) #0. One of many aliases that the Amazing Man is known to have to his enemies is "The Green Mist".
Previously a note here linked Jack Rhodes with Minimidget, but there is no evidence of any such link in this issue- Minimidget also debuts in a later story. All other references easily found on the internet mention this link only to dismiss it. Some mention that Minimidget may be called Jack Rhodes later in his run, but a spot check of several issues of this series and Stars and Stripes Comics reveal no such name.
No origin or explanation is given for the Iron Skull in this story. He is mentioned to have "steel fists" but it is not stated that he is a robot or android despite the presence of robots elsewhere in the story.
Syndication credits: "Copyright Brooklyn Daily Eagle. Distributed by Watkins Syndicate, Inc."
Credit is given in type (not lettering) under the splash panel.
Jerry Bails' Who's Who shows that Gustavson generally did not write the stories he illustrated for Centaur proper, although he did often write for the predecessor issues published by Chesler. However, Terry Gustafson, son of Paul Gustavson, verified that his father, Paul Gustavson, wrote, drew and lettered this story.
Neither Minimidget nor Ritty has a single line during this story, which is told primarily from the point of view of Barmell. Minimidget acts only as Barmell's assassin rather than as a hero, and Ritty makes only background appearances.
Clearly inspired by the 1936 film The Devil-Doll.