Viggo Mortensen is a Danish-Argentine-American actor. He was born on October 20, 1958, in New York City. He is most famous for his appearances in The Lord Of The Rings screen adaptions. He played various characters in other movies, such as A History Of Violence.

Everett Hitch is a brave, but also intelligent lawman who participated in the indian wars. He was a soldier like his father. He has worked as a bouncer and a lookout in saloons and brothels, but when he met Cole, he became a territorial marshal. He likes to read books by Carl von Clausewitz, drinks a lot of Whiskey and visits brothels all around North America.

Ed Harris is an american actor, screenwriter and director. He was born on November 28, 1950, in Englewood, New Jersey. He is best known for his performances in films such as The Right Stuff (1983), The Abyss (1989), The Rock (1996), A Beautiful Mind (2001), Enemy at the Gates (2001), Radio (2003), A History of Violence (2005), and Gone Baby Gone (2007). 

Ed Harris was a friend to Robert B. Parker. Harris's clout and involvement with production was the main reason the Appaloosa movie was made

Before he became a lawman, Virgil Cole has worked in many towns and places as a bouncer. Not much is known about his past. Virgil isn't a brainiac, he asks Everett all the time about writers he didn't know and words he didn't understand. But he is a faithful friend of Everett and stays always by his side. He likes to drink and playing card games. He is dating Allie French. They met each other at the Cafe Paris in Appaloosa.

Renee Zellweger is an american actress (born April 25, 1969). She was born in Katy, Texas. She is most famous for his roles in various films like Bridget Jones's Diary, Jerry Maguire, My One and Only, Case 39 and My Own Love Song.

Allie can't sing nor cook. She isn't the best housewife on the planet, but she is a loveable and devout woman who worries about her fellow human beings. She is Virgil's love interest and a good piano player.

Jeremy Irons is an english actor. He was born on 19 September in 1948 in Cowes. He is most famous for his roles in Moonlighting, Betrayal and The Mission.

Randall Bragg is a miscreant. He owns nearly everything in Appaloosa and outside the little Panhandle town. He is a serious criminal ranchman who kills people. Virgil and Everett must tried to stop the main antagonist in Appaloosa.

Tom Bower is an American actor. He has appeared in a wide variety of television and film roles, including Die Hard 2 and The Bad Lieutenant: Port of Call New Orleans. 

Abner Raines is a member on the Board of the Three Eldermen. 

Cerris Morgan-Moyer is an cornish actress. She was born in 1973 in Truro, Cornwall. She starred in many short movies and TV series like The Reveal.

Tilda is a waitress who works at the Boston House Hotel & Saloon in Appaloosa.

Erik J. Bockemeier is an actor, most known for Appaloosa and Neverland.

Fat Wallis McDonough is the cynical, but loveable bartender at the Boston House.

Timothy V. Murphy is an Irish actor based in Los Angeles. He played Galen O'Shay an IRA member on Sons Of Anarchy.

Vince is one of Bragg's men and a dangerous enforcer. Later he became a notorious train robber.

Not much is known about Gabriel Marantz. He is most known for playing Joe Whittfield in Appaloosa.

Whittfield is a key witness in the Bragg case. 

Ariadna Gil is a spanish actress. She was born in Barcelona in January, 1969. She has played various characters in Spanish movies like Soldados de Salamina.

Katie is a prostitute who has slept with Everett.

Rex Maynard Linn (born November 13, 1956) is an American film and television actor. He is best known for his role as Frank Tripp in the television series CSI: Miami. He is also the audiobook narrator of the Cole & Hitch series.

Clyde Stringer is a sheriff who visits Appaloosa during the Bragg trial.

Bob Lee Harris (October 11, 1922 – February 14, 2014) was an American actor, and the father of Ed Harris.

Amos Callison works as a territorial judge outside of Appaloosa.

Daniel Parker is Robert B. Parker's son. He is an stage and film actor who has played Spike in the Spenser movies.

Mueller is a lawyer from Little Springs. He defends Bragg in the trial.