Here's a slide show as he got into character as "Grayson robot:"
The circle panel actually lit up and the first time Gray saw it he said, "Daddy, I'm a real robot!" The letters and serial number are his initials and birthday. So clever, Daddy!
Approaching the first house we realized stairs were going to be a bit of a challenge, but he managed to navigate everything without falling.
He kept saying, "I-am Gray-son ro-bot" in his best robot voice.
Once we got home, you can see he was pretty tuckered out. We only went to about seven houses, but his cold has really taken it out of him. It was enough to get a good candy stash and make some memories.