A drifting ex-soldier turns underground fighter with the help of a just-released ex-con, pitting him against corrupt cops and hired killers now gunning for him and all those he cares about.
| Actor | Role |
|---|---|
 Frank GrilloMichael 'Duffy' Duffield | Michael 'Duffy' Duffield |
 Mekhi PhiferMax Bomer | Max Bomer |
 Jaime KingDetective Ellen Ridgway | Detective Ellen Ridgway |
 Dermot MulroneySage Parker | Sage Parker |
 Scott AdkinsDon 'The Reaper' Richter | Don 'The Reaper' Richter |
 Amaury NolascoFosco | Fosco |
 Donald CerroneCarter | Carter |
 JuJu ChanLynx | Lynx |
 Justin FurstenfeldStan 'The Man' Lazare | Stan 'The Man' Lazare |
 Paul SloanDetective Kincaid | Detective Kincaid |
 Erica PeeplesRachel Bomer | Rachel Bomer |
 Kevin GagePoe | Poe |
| BBrandon BurrowsRiggs | Riggs |
| JJailyn RaeHannah Bomer | Hannah Bomer |
 Robert LaenenFord | Ford |
| JJeff ChasslerDealer Rufus | Dealer Rufus |
 Mary Christina BrownBlankenbaker | Blankenbaker |
 Jessica MedinaValentina | Valentina |
 Bryan McGowanBiker | Biker |
 Cub SwansonTattoo Fighter | Tattoo Fighter |
 Jay HieronSantiago | Santiago |
| TTyler WomblesCarter Sparing Partner | Carter Sparing Partner |
 Brenna OttsNews Reporter | News Reporter |