Zero the Hero returned on Day 20.
He had been missing. At the end of Day 10, we put him in the closet. We noticed a few days later that he was GONE. We even wrote a story about it, cleverly titled "Zero the Hero is Missing"
On Day 20, we opened the cupboard and he was BACK! He brought these yummy ZEROs for us to eat. So now we know where he was. He was at the dollar store picking up candy. I'm surprised I didn't see him there, since I shop there quite a bit, too.