If I were a hero, I'd be Martin Luther (Part 2629)....

 Superhero Anydays

Don't know the artist, but he did a very cute version of the Legion Of Super-Heroes member (and my second favorite overall and most favorite female member) Phantom Girl. 

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And today we also have cosplayer Micheal Hamm (I think that's his name) in his Nightwing outfit. 

POLT