I took some sprites of the biggest Marvel characters from Marvel vs. Capcom 1 & 2, recolored them to fit my personal taste, and then stuck them on a retro-style poster. I even added some faux scan lines, to better fit the retro arcade look and feel.
Something I JUST realized as I was writing this up, is that the gradients in the background should have been pixelated, too. This poster is good, but that change would have made it great.
Now I know for next time!
Marvel Comics and all related characters are owned by Disney. Sprite art originally by Capcom.