Disambiguation: Mr. America; Americommando
First published in: 1938
First appeared in Action Comics (DC, 1938 series) #1 (June 1938) by Bernard Baily.
Tex Thomson first appeared in Action Comics (DC, 1938 series) #1 (June 1938). He became Mr. America in Action Comics (DC, 1938 series) #33 (February 1941). He formally changed his name to the Americommando in Action Comics (DC, 1938 series) #54 (November 1942). He debuted as the mysterious Coordinator of Hero Hotline (known only as "Harry") in Action Comics Weekly (DC, 1988 series) #637 (January 31, 1989).