
Dean Winters (born July 20, 1964) is an American actor, who is known for his roles as Bobby on the YouTube series Wayne, Detective Brian Cassidy on Law & Order: SVU, Detective Russ Agnew on Battle Creek, 'The Vulture' Detective Pembroke on Brooklyn Nine-Nine, Charley Dixon on FOX's Terminator: The Sarah Connor Chronicles, Dennis Duffy on NBC's 30 Rock, Johnny Gavin on FX's Rescue Me, Ryan O'Reily on HBO's Oz. He also portrays "Mayhem" in Allstate commercials.

Law & Order: Special Victims Unit
TV • 1999

American Dad!
TV • 2005

CSI: Miami
TV • 2002

30 Rock
TV • 2006

Saturday Night Live
TV • 1975

Law & Order: Criminal Intent
TV • 2001

Brooklyn Nine-Nine
TV • 2013

Sex and the City
TV • 1998

Third Watch
TV • 1999

Last Week Tonight with John Oliver
TV • 2014

NYPD Blue
TV • 1993

Oz
TV • 1997

Homicide: Life on the Street
TV • 1993

Millennium
TV • 1996

Millennium
TV • 1996

Unbreakable Kimmy Schmidt
TV • 2015

Rescue Me
TV • 2004

American Gods
TV • 2017