LEGO MOC Justice Society of America
I returned home from work (because those are the thoughts I have when I am bored at work) and busted out my stash...and as it turns out I was right!
MOC Jay Garrick Flash and my Sandman minfigures before. As for Spectre, I pieced him together from a bootlego Green Arrow hood, a bootlego Loki cape, a LEGO ghost torso and arms, random white legs, a LEGO Toy Story army man's green hands, a random LEGO green crotch, and a LEGO Ninjago skull.
I love The Spectre, and can't believe it took me this long to piece a LEGO version together!