A key aspect of the Human Target in comics…
You mention that "The original version of the comic, which appeared for a while as a backup in The Brave And The Bold, was more or less straightforward hard-boiled detective drama with a mild psychological undertone," But what you don't mention, and what is not a part of…

What, no mention of Eric Von Zipper…
…and his terrifying "Ratz and Mice" motorcycle gang from the Frankie and Annette movies? How can I take this list seriously?

Dr. Pepper Red Fusion!
I want my Red Fusion back! Nothing Dr. Pepper has come out with since is as good. And Diet Cherry Chocolate Dr. Pepper doesn't have enough shit going on.