If I were a hero, I'd be Martin Luther (Part 4071)....

 Superhero Anydays

Don't know the artist, but it's basically the Legion of Doom from the Super Friends cartoon. 

Bizarro and Giganta

Gorilla Grodd, Lex Luthor, Cheetah

Toyman, Sinestro, Brainiac, Riddler, Captain Cold

Scarecrow, Solomon Grundy, Black Manta

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And today we have cosplayers doing the twins of Infinity Inc: Obsidian and a gender bent Jade. 

POLT