Johnny Klebitz – Protagonist:
Johnny Klebitz, voiced by Scott Hill, is the leader of The Lost MC gang whilst Billy Grey is incarcerated. Grey is released during the events of The Lost and Damned, leading to Klebitz being pushed back down the gangs pecking order. In GTA IV, he is seen helping Elizabeta Torres, who has him help Niko Bellic and Playboy X in a heroin deal, which is an LCPD set-up. Later on in the story, Johnny once again helps Niko in a diamond deal but betrays Niko and Ray Boccino, stealing the money from the deal.
Billy Grey – Antagonist:
Billy Grey, voiced by Lou Sumrall, is the Chapter President of The Lost MC gang in Alderney and the best friend / antagonist of Johnny Klebitz, who leads The Lost MC in Billy’s stead during his rehabilitation/incarceration and at the start of the story. He is responsible for much of the violence toward fellow motorcycle gang The Angels of Death.
Jim Fitzgerald – Major Character:
Jim Fitzgerald, voiced by Dennis Predovic (in GTA IV) and Chris McKinney (in TLAD) is the Treasurer of The Lost Brotherhood motorcycle gang. He doesn’t like the violence towards The Angels of Death either. In the events of GTA IV, he is killed by Niko Bellic on on orders from Ray Boccino.
Brian Jeremy – Major Character:
Brian Jeremy is a senior member of The Lost motorcycle gang as the club’s secretary and is fiercely loyal to the gangs incarcerated leader. Brian is killed by Johnny (if the player wishes to do so).
Jason Michaels – Major Character:
Jason Michaels is a member of The Lost MC. Jason works as a pimp and dates Anna Faustin, until he is killed by Niko Bellic on orders from Anna’s father, Mikhail.
Clay Simmons – Major Character:
Clay Simons is the road captain of The Lost MC and is implied to be a war veteran. As Road Captain if a fellow member is in need of a bike he will deliver it to them.
Ashley Butler – Major Character:
Ashley Butler, voiced by Traci Godfrey, is part of the The Lost Brotherhood’s incarcerated leader, Billy Grey. She is a known associate of Ray Boccino and has possibly had an affair with him. She was arrested in 2001 for being in possession of cocaine and is also a meth-amphetamine addict.
Malc – Major Character:
Malc is a member of the Uptown Riders motorcycle gang and an associate of Johnny Klebitz and Elizabeta Torres.
Terry Thorpe – Major Character:
Terry Thorpe is a member of The Lost motorcycle gang and is believed to run one of the gangs meth-amphetamine labs. He is the gang’s sergeant-at-arms and his services are similar to Little Jacob’s.
Thomas Stubbs – Major Character:
Thomas Stubbs, voiced by John Lantz, is a Congressman working in Liberty City. He gets Johnny to work for him after he blackmails him. He asks Johnny to perform various assassinations on people Stubbs knows. This is similar to Lester and Franklin in GTA V.
Ray Boccino – Major Character:
Ray Boccino is a member of Pegorino Family who needs the help of Johnny’s gang to steal some illegal diamonds. He plays a large part in GTA IV as he’s a main character in both GTA IV and TLAD.
Niko Bellic – Major Character:
Niko Bellic, voiced by Michael Hollic, is the protagonist in Grand Theft Auto IV and appears in The Lost and Damned during the mission Buyer’s Market (of which is Blow Your Cover in GTA IV) and later in the Collector’s Item mission (which Museum Piece in GTA IV).
Roman Bellic – Major Character:
Roman Bellic is the cousin of Niko Bellic and plays a major part in one mission of The Lost and Damned, ‘Roman’s Holiday’. Johnny is ordered by some of Dimitri Rascalov’s men to kidnap Roman, or else Ashley would get killed. With the help of Malc, Johnny is successful in doing so, but still feeling a bit sorry for him, even asking to go easy on him to Dimitri’s men.
Elizabeta Torres – Major Character:
Elizabeta Torres, voiced by Charlie Parker, is a drug dealer living in Liberty City. She hires Niko Bellic, Playboy X and Johnny Klebitz to do a drug deal in the mission Buyer’s Market (Blow Your Cover in GTA IV).
Playboy X – Brief Character:
Playboy X, voiced by Postell Pringle, is the leader of the North Holland Hustlers, standing in for Dwayne Forge. He works for Elizabeta Torres and alongside Niko Bellic and Johnny Klebitz in a drug deal in the mission Buyer’s Market (Blow Your Cover in GTA IV).
Tony Prince (Gay Tony) – Brief Character:
Tony Prince, known as Gay Tony, is a nightclub owner in Liberty City and appears briefly in The Lost and Damned. Johnny is told by Ray Boccino to rob the diamonds from Tony. Johnny arrives at a deal in which Tony is getting the diamonds, and Tony let his boyfriend Evan Moss hold the diamonds. When Luis Lopez notices Johnny and The Lost where behind them, they fled, with Evan still holding the diamonds. Johnny killed Evan and acquired the diamonds.
Luis Lopez – Brief Character:
Luis Lopez, the companion / bodyguard of Tony Prince, is the protagonist of The Ballad of Gay Tony and appears twice in The Lost and Damned. First, at the deal with Tony where he acquires the diamonds. Johnny was ordered to steal the diamonds from Tony. Luis noticed Johnny and The Lost where behind them and they quickly fled. The second time was, during the diamond deal between Johnny and Niko and Isaac Roth, where Luis appears to mess up the deal by shooting Isaac’s companion Mori Green.