Mike appeared during Locke's flashbacks in "Further Instructions". He and his partner Jan were leaders of a marijuana-growing commune that Locke joined. At first, Mike appeared warm and kind. But after Eddie, a hitchhiker brought to the commune by Locke, was revealed to be an undercover police officer, he showed a much harsher side. He was ready to leave the commune forever, and when Locke insisted he could fix the situation, Mike questioned his ability to do so pointedly.