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Jon Polito was an American actor and voice actor who voiced Arnook and additional characters in three episodes of Avatar: The Last Airbender.

Avatar: The Last Airbender credits[]

Chief Arnook[]

Character information: Arnook

Additional voices[]

Selected other credits[]

Television work[]


Other credits[]

Biographical information[]

Jon Polito is best known for working with the Coen brothers, most notably in the major supporting role of Italian gangster Johnny Caspar in Miller's Crossing. He also appeared in the first two seasons of Homicide: Life on the Street and on the first season of Crime Story.

He portrayed Orren Boyle in 2011's Atlas Shrugged, the film adaptation of Ayn Rand's novel of the same name.

Polito is the partner of actor and musician Darryl Armbruster.


  • 2012: Won a Hollywood Reel Independent Film Festival Award for Anti-Muse (Best Actor)
  • 2005: Won a Cinequest San Jose Film Festival Maverick Tribute Award


  • All three of his additional voices credits misspell his name "John Polito".
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