If I were a hero, I'd be Martin Luther (Part 4430)....

 Superhero Anydays

I recognize this work, but I can't recall the artist's name.  At any rate, the red-masked villain at the bottom, Johnny Sorrow, is in for an ass-whopping from the Justice Society, both original members, members from the 70s, and new recent legacy members. 

King Chimera, Cyclone

Stargirl, Sand, Hourman

Dr. Fate

Green Lantern, Captain Marvel

Judomaster, Steel, Power Girl, Atomsmasher, Wildcat III

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And today we have a trio of cosplayers, doing Omniman, his son Invicible, and one of the members of the Fantastic Four.

POLT