Mr. Terrific, my favorite modern Justice Society member.
Cool costume— especially the mask— no real powers (he’s invisible to technology) and his weapons? Yeah, those T-Spheres are kind of awesome. He’s headed up the JSA and he’s currently in charge of Checkmate.
He’s also one of the rare atheists in comics and the only one I can think of that approaches it intelligently as opposed to the standard “angry at God” sort that are far more common.
I am a huge JSA fan - stemming really from JLA/JSA crossovers and All Star Squadron issues I bought as a kid. The first 12 issues of Infinity Inc. are still one of my favorite runs of all times. Until recently, I bought every JSA appearance in comics and brother, there were some lean years and shitty comics bought but I have never gotten over my love for these characters and the history.