If I were a hero, I'd be Martin Luther (Part 2665)....

 Superhero Anydays

We have, by Mike Belcher, Batman and Robin, and a bunch of their enemies. 

Catwoman, Calendar Man, Scarecrow, Mad Hatter, Mr. Freeze, Two-Face, Ra's al-Ghul, The Joker, Man-Bat

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And today we also have cosplayers doing two of the five members of the the Fatal Five, enemies of the Legion of Super-Heroes.

POLT