Young Guns is a 1988 American Western action film directed and produced by Christopher Cain and written by John Fusco. The film dramatizes the adventures of Billy the Kid during the Lincoln County War, which took place in New Mexico in 1877–78. It stars Emilio Estevez as Billy, and Kiefer Sutherland, Lou Diamond Phillips, Charlie Sheen, Dermot Mulroney and Casey Siemaszko as the other Lincoln County Regulators. The supporting cast features Terence Stamp, Terry O'Quinn, Brian Keith, and Jack Palance.

Young Guns II is a 1990 American Western action film and a sequel to Young Guns (1988). It stars Emilio Estevez, Kiefer Sutherland, Lou Diamond Phillips, and Christian Slater, and features William Petersen as Pat Garrett. It was written by John Fusco and directed by Geoff Murphy.

It follows the life of Billy the Kid, played by Emilio Estevez, in the years following the Lincoln County War in which Billy was part of "The Regulators" – a group of around six highly skilled gunmen avenging the death of John Tunstall – and the years leading up to Billy's documented death. The film is told by Brushy Bill Roberts, a man who in 1950 appeared claiming to be the real Billy the Kid. 

Emilio Estevez as William H. "Billy the Kid" Bonney, a renegade outlaw who leads the Regulators.

    Kiefer Sutherland as Josiah Gordon "Doc" Scurlock, Billy's right hand in the Regulators.

    Lou Diamond Phillips as Jose Chavez y Chavez, a Mestizo member of the Regulators.

    Charlie Sheen as Richard "Dick" Brewer, Tunstall's foreman, the founder and original leader of the Regulators.

    Dermot Mulroney as "Dirty" Steve Stephens, member of the Regulators

    Casey Siemaszko as Charlie Bowdre, member of the Regulators,

    Terence Stamp as John Tunstall, an English rancher who employed the ranch hands who turned Regulators upon his death.

    Jack Palance as Lawrence Murphy, an Irish rancher connected to the House,

    Terry O'Quinn as Alexander McSween, a lawyer who opposed the House and deputized the Regulators.

    Sharon Thomas as Susan McSween, Alex's wife.

    Alice Carter as Yen Sun, a Chinese emigrant and Murphy's mistress who caught Doc's eye.

    Geoffrey Blake as J. McCloskey, one of Murphy's henchmen posing as one of Tunstall's ranch hands.

    Brian Keith as Buckshot Roberts, a seasoned bounty hunter hired by Murphy to eliminate the Regulators

 Patrick Wayne as Pat Garrett, a lawman who was once allied with the Regulators.

Danny Kamin as Sheriff William J. Brady; the corrupt Sheriff of Lincoln County on Murphy's payroll, 

Lisa Banes as Mallory,

Pat Finn-Lee as Janey, 

Allen Keller as John Kinney, 

Victor Izay as Judge John B. Wilson, 

Craig Erickson as George Peppin, 

Jeremy Lepard as James Dolan

Gary Kanin as Nathan Dudley.

Tom Cruise briefly appears in a nonspeaking cameo role as one of Murphy's henchmen that is shot and killed by Charlie during the climatic shootout.

 Country musician Randy Travis has a cameo as a Gatling gunner.

    Christian Slater as "Arkansas" Dave Rudabaugh, a reckless outlaw who joined the Regulators

    William Petersen as Pat Garrett, the newly appointed Sheriff of Lincoln County

    Alan Ruck as Hendry William French, a composite character loosely based on Henry Brown and Jim French, a farmhand recruited into the Regulators[citation needed]

    R.D. Call as D.A. Rynerson

    James Coburn as John Chisum, a wealthy cattle baron that owed Billy the Kid money, but chose to join the House in hunting him down

    Balthazar Getty as Tom O'Folliard, the youngest recruit in the Regulators

    Jenny Wright as Jane Greathouse, owner of the White Oaks bordello

    Jack Kehoe as Ashmun Upson, a journalist Garrett hired to document the pursuit against the Regulators

    Robert Knepper as Deputy Carlyle, a lawman who led the lynch mob in White Oaks

    Tom Kurlander as Deputy Sheriff J.W. Bell, a Lincoln county lawman who kept tabs on Billy the Kid prior to his escape

    Viggo Mortensen as John W. Poe

    Tracey Walter as Beever Smith

    Bradley Whitford as Charles Phalen

    Scott Wilson as Governor Lew Wallace, incumbent Governor of New Mexico

    Leon Rippy as Deputy Sheriff Bob Olinger, a disgruntled Lincoln County deputy who oversaw Regulator members being locked away

    Howie Young as Poe Posse

    Richard Schiff as Rat Bag

    Ginger Lynn as Dove

Jon Bon Jovi briefly appears in a nonspeaking role as a bandit who attempts escaping during the prison scene