Michael is a young boy who is living in a city of Wisconsin. He has a younger brother named Asher.
Season 1
He reminded Dean of himself at that age when he used to care for Sam. When his brother, Asher fell victim to a Shtriga that had been hunting in the area and was, as a result, in the hospital in critical condition, Michael blamed himself for the fact that he was not there to protect him.
He agreed to be bait for Sam and Dean when they go up against the Shtriga. (("Something Wicked"))