
One Battle After Another
Col. Steven J. Lockjaw

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Acting
Sean Justin Penn (born August 17, 1960) is an American actor and filmmaker. He is known for his intense leading man roles in film. His accolades include three Academy Awards, a Golden Globe Award, and nominations for three British Academy Film Awards, an Emmy Award, and a Grammy Award. He received the Honorary César in 2015 and the Bob Hope Humanitarian Award in 2022. Penn made his feature film debut in the drama Taps (1981), before taking roles in Fast Times at Ridgemont High (1982), Bad Boys (1983), and At Close Range (1986). He has won the Academy Award for Best Actor twice, for playing a grieving father in Mystic River (2003) and the gay rights activist Harvey Milk in Milk (2008). He won the Academy Award for Best Supporting Actor for playing the ruthless military officer Colonel Steven J. Lockjaw in One Battle After Another (2025). He was Oscar-nominated for Dead Man Walking (1995), Sweet and Lowdown (1999), and I Am Sam (2001). He also acted in Casualties of War (1989), State of Grace (1990), Carlito's Way (1993), The Game(1997), The Thin Red Line (1998), Hurlyburly (1998), 21 Grams (2003), Fair Game (2010), The Tree of Life (2011), Licorice Pizza (2021) and Daddio (2023). Penn made his directorial film debut with the crime drama The Indian Runner (1991), followed by The Crossing Guard (1995), The Pledge (2001), and Into the Wild (2007). On stage, he acted in the Broadway plays Heartland (1981) and Slab Boys (1983). On television, he portrayed an astronaut in the Hulu drama series The First (2018) and John N. Mitchell in the Starz political thriller miniseries Gaslit (2022). Penn has also engaged in political and social activism, including his criticism of the George W. Bush administration, his contact with the presidents of Cuba and Venezuela, his humanitarian work in the aftermath of Hurricane Katrina in 2005 and the 2010 Haiti earthquake, and his support for Ukrainian President Volodymyr Zelenskyy amidst the Russian-Ukrainian war. Description above from the Wikipedia article Sean Penn, licensed under CC-BY-SA, full list of contributors on Wikipedia.
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114 acting credits · Includes cameos and other appearances where listed.

Col. Steven J. Lockjaw

Jimmy Markum

Terence (voice)

Sean O'Connell

1st Sgt. Edward Welsh

Mickey Cohen

Jack Holden

Conrad Van Orton

Tobin Keller

Passenger in Car (uncredited)

Jack

David Kleinfeld

Sean Penn (uncredited)

Matthew Poncelet

Jim Terrier

Sam Dawson

Jeff Spicoli

Paul Rivers

Willie Stark

Terry

Sgt. Tony Meserve

Mick O'Brien

Joseph Wilson

Gene Rutkovsky

Sean Penn (uncredited)

Sean Penn

Bradford 'Brad' Whitewood Jr.

Bobby Cooper

Dr. William Chester Minor

Danny McGavin

Buddy

Harvey Milk

Clark

Cheyenne

Cadet Captain Alex Dwyer

John Vogel

Self (archive)

Eddie Quinn

Cuco Sanchez

Sean Penn

Emmet Ray

Daulton Lee

Thomas Janes

Commie

Samuel Bicke

Marciello

Glendon Wasey