"That run was a 'form followed function,' in that if you're stooped over, which he is, you just try your best to run, and that's how it comes out. It's really physically strenuous to stay that stooped over and then run. It's very physical, even though he looks like he's slow, which he is, and kind of awkward; it's hard to kind of just hold that. But that's why this job is fun. Your whole body is in it. It's like doing a stage performance. "