Undercover Man (Lev Gleason)

''“Flower lady, toughie, socialite, or emigrant—no matter under what disguise—Phil Barrows was first of all a very good detective. Nobody knew him as the Undercover Man who seemed to know what gangsters and criminals would do next.”''

Origin
Undercover Man was a backup feature in the Lev Gleason comic Captain Battle. He was the man of a thousand… well really just the faces lined up behind him on his splash page here.

Golden Age Appearances

 * Captain Battle Comics #1-2