
Gregory Alan Williams (born June 12, 1956) is an American actor and author. He is best known for portraying LAPD Officer Garner Ellerbee in Baywatch. From 2011 until 2013, Williams portrayed the role of Coach Pat Purnell in the USA Network series Necessary Roughness.

Terminator Genisys
2015 · as Detective Harding

Old School
2003 · as Therapist

Hidden Figures
2016 · as Marion Smithson

Brightburn
2019 · as Sheriff Deever

In the Line of Fire
1993 · as Matt Wilder

The Accountant
2016 · as Treasury Secretary

Remember the Titans
2000 · as Coach Paul 'Doc' Hines

Be Cool
2005 · as Darryl

Miracles from Heaven
2016 · as Dr. Joe Hester

I See You
2019 · as Detective Spitzky

Major League
1989 · as Bull Pen Guard

The Banker
2020 · as Britton Garrett

Above the Law
1988 · as FBI Agent Halloran

Ruth & Boaz
2025 · as Eli

The Collector
2009 · as Sheriff

Billy Lynn's Long Halftime Walk
2016 · as Raise n' Praise Preacher

MacGruber
2010 · as Minister

Evil Genius