If I were a hero, I'd be Martin Luther (Part 4045)...

 Superhero Anydays

Don't know the artist (Phil someone or another) but there's a whole bunch of heroes from various incarnations of the Justice League over the years. 

Martian Manhunter, Supergirl, Green Lantern, Starfire, Red Tornado

Aquaman, Batman, The Atom, Superman, Hawkgirl

Zatanna, Wonder Woman, Batgirl, Vixen

The Flash, Nightwing, Black Canary, Green Arrow

the latest Robin up front

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And today we also have a cosplaying Magneto (you can tell by the helmet) and either his daughter or son doing a Polaris (you can tell by the headdress) (genderbent if it's his son). 

POLT