Just got back from Wizard World Chicago. My first time there, and it was pretty fun. I didn't take a lot of pictures, but then I spent most of my time rifling through comics rather than people watching. I did manage to run into a couple good costumes, though (sorry for the crappy pics)
Dude had a sweet proton pack (signed by Ernie Hudson!). He told me it took him 5 months to build
Also saw Doug Jones walking around, but I wasn't sure it was him at the time, so I kept my distance.
Also, the Red Samurai is Ryo Sanada from Ronin Warriors