A Metro Detroit man created a new business to re-write his pandemic story and to put everyone’s favorite heroes at people’s fingertips. Marvin Allen, a long-time athlete and personal trainer, is showing that behind the brawn, there is a brain for survival. When coronavirus shut down his ability to work as a personal trainer, he said it was a scary time. He spoke with an attorney and started his business: Book Your Hero. “It’s a complete birthday experience where we take all the pressure of planning a child’s birthday party off of the parents.