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Michael O'Neill is an American actor who portrayed Lonnie Mencken in the seventh season of Scandal.

Career[]

With a career stretching through three decades, he usually portrays senior law enforcement or military officers. He played Special Agent Ron Butterfield, the head of President Josiah Bartlet's Secret Service detail, on The West Wing, and CTU Administrative Director Richard Walsh in the first two episodes of 24. He played Sgt. Maj. Ron Cheals in CBS' action drama series The Unit. He starred in the Season 6 two-part finale of Grey's Anatomy as Gary Clark, the broken widower who holds the hospital hostage with a 9mm while pursuing the doctors responsible for unplugging his wife's life support.

He portrayed Nick Ford on the second season of Bates Motel, and Alan Sparks on Extant. His most notable film performances occur in Seabiscuit, Secondhand Lions, Transformers, Dancer, Texas Pop. 81, Traffic, Sea of Love, A Quiet Little Marriage, Nothing but the Truth, and Green Zone, J. Edgar, directed by Clint Eastwood, and Dallas Buyers Club.

External Links[]

Click on any or all of the links below to view more information about Michael O'Neill and a full filmography.