Spy Smasher first appeared in Whiz Comics #02 (Feb 1940) published by Fawcett Comics. He also appeared in his own named magazine Spy Smasher for a total of 11 issues (Sep 1941 - Feb 1943).
He appeared a further 61 times in Whiz Comics, 12 times in Men Of Mystery Comics and 8 times in America's Greatest Comics.
Spy Smasher a character along the same lines as Batman and the Blue Beetle. Spy Smasher, real name Alan Armstrong was a wealthy sportsman who was also a master detective. He was engaged to Eve Corby, whose father was an admiral in the U.S. Naval intelligence division. The Admiral confided in Alan that a recent spate of apparent accidents could be the work of spies. Alan decided to combat them as Spy Smasher.
His wealth and extensive knowledge of aviation, made it possible to construct a specialised vehicle he called the 'Gyrosub', a combination of an autogyro, a speedboat and a submarine.
His costume was originally a military styled Khaki uniform with goggles and a red cape. In 1942 this was altered to all green with a red diamond emblem on the chest.
As Spy Smasher, Alan fought such villains as The Mask, Dark Angel, America-Smasher, Red Death and Tigress I.