First appearance: Detective Comics #1 (March 1937)
Unfortunately, some of his earliest exploits may seem a bit racist in the present day and age, but back when he first appeared (almost 85 years ago at this point) the idea of the "mysterious orient" and racial caricatures were not uncommon.
Despite those "questionable" early adventures, Bradley did make popular comebacks in DC comics years later.
His "Who's Who" entry from Who's Who: The Definitive Directory of the DC Universe Vol. XXI (November 1986)