You don't need to wonder what Mega Man would look like in real life. One dude at PAX Prime nailed the Blue Bomber's look.
Scroll down and you'll see a Mega Man costume that effectively channels the feel of the Capcom icon: a short, friendly dude who's got off-putting proportions and a laser cannon for a hand. You'll also see characters from Archer, BioShock Infinite and Supergiant Games' upcoming action/RPG game Transistor. My favourites? The Borderlands, Mortal Kombat and Adventure Time group shots. Great teamwork, guys. (And an honorable mention for the Captain America Spartan!)