If Mr. Period was a real person, I would punishment him hard.

I think I would flog him so his back bleed. Then I would change his clothes to 1700s prison/execution clothes. I would bring him to the three in my garden and then hang him. He would be strangled and tortured. With his hands and feet chained, he can't escape. I don't think he would die, because he's a mythology similar creature. As long he has the duty, he's immortal. He would be tortured and every time he gave a person the period, the rope would be extra tighten and he would feel more pain around his neck. I guess he would hang there as long the police officer don't notice him.

<-- "Hehe, the period get his medieval punishment and he deserve it!"

< -- "Who cares about the period? He deserve the punishment. We're the police, but in this case, we don't care"