Religion: indeterminate
Name: Frank Martin
Classification:
supporting character
Publisher(s): 
First Appearance: Superman (vol. 1) #8 (Jan.-Feb. 1941): "The Fifth Column"
Creators: Jerry Siegel, Wayne Boring, Don Komisarow
Number of Appearances: 1
Enemy of: Jeff Carlton, Nazi subversive army
Employer: U.S. anti-espionage service
Ally: Clark Kent
Occupation: intelligence agent
Gender: male
Superman (vol. 1) #8 (Jan.-Feb. 1941): "The Fifth Column" (5-panel cameo)
Suggested links for further research about this character:
- https://www.comics.org/issue/1210/
- http://comicbookdb.com/issue.php?ID=53034