No, robot overlords didn't make the awesome Comic-Con mech that tried to befriend kids this year. Humans did! Hence why the mech needs someone to pilot it—not that it's immediately obvious that someone is in the suit. Kind of begs the question: how did they pull it off?
Here are a couple of inside looks, courtesy of wired, which look at the mech's conception and development, including unused designs and how the mech actually works. It's pretty cool, and I imagine that's especially true for anyone who is interested in actually building a mech one day. It's also unreal to see what kind of skeleton the person piloting this thing jumps into. Engineering, people.
Both of these aren't a complete look at how it was made, though. Wired will be uploading more parts to this series later in the week.