Michael O'Neill

Michael O'Neill

​From Wikipedia, the free encyclopedia. Michael O'Neill (born May 29, 1951) is an American actor. With a career stretching through three decades, he usually portrays senior law enforcement or military officers. He is perhaps best known for his role as Special agent Ron Butterfield, the head of President Josiah Bartlet's Secret Service detail, on The West Wing. He played CTU Administrative...

Known For

Dallas Buyers Club

as Richard Barkley

War of the Worlds

as Secretary of Defense Walter Crystal

Transformers

as Tom Banacheck

Cast Credits

War of the Worlds

as Secretary of Defense Walter Crystal

Bride Hard

as Frank

Air

as Joe Dean

Cold Call

as Christian

Clemency

as Chaplain David Kendricks

Indivisible

as Chaplain Rogers

Danger One

as Beckwith

The Grim Sleeper

as Detective Simms

Dallas Buyers Club

as Richard Barkley

J. Edgar

as Senator McKellar

Green Zone

as Colonel Bethel

Flying Lessons

as Chief Dobbs

Nothing But the Truth

as CIA Director

Crazy

as Ralph Christianson

Transformers

as Tom Banacheck

American Crime

as Sheriff Smyth

Seabiscuit

as Mr. Pollard

Dreamcatcher

as Gen. Matheson

Traffic

as Lawyer Rodman

ATF

as ATF Asst. Director Ben Walker

The Mod Squad

as Greene

Standoff

as Cult Leader (Voice)

The Sunchaser

as Agent Moreland

Crew Credits