Miss X
Publication information
PublisherDC Comics
First appearanceAction Comics #26 (May 1940)
Created byKen Fitch (script)
Bernard Baily (art)
In-story information
Alter egoMargaret Janice "Peggy" Maloney

Miss X is a fictional, comic-book character in the DC Comics universe. She first appeared in Action Comics #26 (May 1940), in the feature "Tex Thomson". Although her secret identity was never expressly revealed, the reader was led to believe it was Margaret Janice Peggy Maloney, the daughter of District Attorney Maloney.[1]

Fictional character biography

Miss X aided Tex Thompson and Bob Daley after the third member of their team, Gargantua T. Potts, left to become a cook in the French Army.[2] She wore no costume, and her sole disguise consisted of a pair of dark sunglasses.[3] Tex was intrigued and obsessed with finding out who the mysterious Miss X was. In the final panel of Action Comics #29, he confided to his partner that he thought he had figured out who she was.

In Action Comics #33, Thompson was declared dead. This turned out to be a ruse, and Thompson returned as Mister America. Miss X made her final appearance in Action Comics #43 (Dec. 1941).


  1. ^ Nevins, Jess (2013). Encyclopedia of Golden Age Superheroes. High Rock Press. p. 184. ISBN 978-1-61318-023-5.
  2. ^ Dayton, Deejay (April 25, 2015). "DC Comics History: Tex Thompson/Mr. America/Americommando". ComicBookBin. Retrieved 22 April 2020.
  3. ^ Markstein, Don. "Miss X". Don Markstein's Toonopedia. Retrieved 2 April 2020.