New Comics #2

It's 1936 now, still 2 1/2 years before Superman!  Like New Comics #1, I don't have access to the contents of this issue.  However, if this source is to be believed, then the Steve Carson, Federal Men serial here features the first appearance of a corrupt beat cop (an evil 1st-level Fighter).

I still don't have access to the whole issue, but I found this blog that gives me a whole lot more to go on.  Yes, Steve Carson does go up against a corrupt beat cop -- the first in comics -- in this story.  He also talks an accomplice into changing sides. The mechanic for this would be an encounter reaction roll, though in some circumstances a morale save might be more appropriate.