"Humans will find a face in three lines if they're arranged in so much as a remotely similar pattern," Tadashi says. He nods politely at York, if a little awkwardly. They've had pretty minimal interaction up until this point, but they've both been around long enough that the standard 'hi, I'm blah' isn't going to cut it.

"I actually studied it a bit when I was designing Baymax," he adds, still mostly to Delta. "I ended up going with something simple, since I had to worry about the Uncanny Valley problem, but it looks like they've resolved it by this point."