Silas Weir Mitchell (born Silas Weir Mitchell Neilson; 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). Mitchell was born and raised in Philadelphia, Pennsylvania. He is named after an ancestor, the 19th century physician and author Silas Weir Mitchell. He attended The Montgomery Country Day School, formerly in Gladwyne PA for his elementary school years; is a graduate of St. Paul's School, a college-preparatory boarding school in Concord, New Hampshire, (1987); Brown University (1991) in Rhode Island, where he majored in Theatre and Religion; and the University of California San Diego, Master of Fine Arts program (1995) After graduating from Brown, he spent some time in New York City, acting in minor theatre productionsIn 2008, Silas made an appearance in seventh and final season of the U.S. cop show The Shield. In 2009, he appeared in A Fork in the Road, alongside Jaime King, and in Halloween 2. Mitchell also appeared in Fox's TV show, Mental with Chris Vance, also from Prison Break. In October 2011, Mitchell was cast as Monroe in the NBC TV series Grimm.

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