If I were a hero, I'd be Martin Luther (Part 4041)....

 Superhero Anydays

Don't know the artist, but these are Archie Comics' Mighty Crusaders!

Comet, Steel Sterling

Web

Flygirl and Fly

Shield

Black Hood

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And today we also have some Teen Titans' cosplay.  

Kid Flash, a bearded Robin and Speedy.

POLT