Silas Weir Mitchell was born in Philadelphia, Pennsylvania, USA. He is an actor and producer, known for Rat Race (2001), The … Silas Weir Mitchell September 30, 1969 is an American character actor. He is known for starring as Charles “Haywire” Patoshik in the Fox television series Prison Break (2005–2007) and as Monroe in the NBC television series Grimm (2011–2017). He is named after an ancestor, the 19th century physician and author Silas Weir Mitchell. Silas Weir Mitchell, Actor: Rat Race. Silas Weir Mitchell (born Silas Weir Mitchell Neilson; September 30, 1969) is an American … Silas Weir Mitchell Biography.