 Anthony SteffenLieutenant 'Garringo' Harris | Lieutenant 'Garringo' Harris |
| SSolvi StübingJulie | Julie |
 Raf BaldassarreDamon | Damon |
 Frank BrañaBill | Bill |
 José BódaloSheriff Klaus | Sheriff Klaus |
 Antonio Molino RojoHarriman | Harriman |
 María SalernoNancy Grayson (as Marta Monterrey) | Nancy Grayson (as Marta Monterrey) |
| PPeter Lee LawrenceJohnny | Johnny |
 Luis MarínPete, Bounty Hunter | Pete, Bounty Hunter |
| BBarta BarriWilson (as Barta Barry) | Wilson (as Barta Barry) |
 Rossana RovereSarah | Sarah |
 Lorenzo RobledoDeputy Sheriff Tom | Deputy Sheriff Tom |
 Luis InduniDr. Grayson | Dr. Grayson |
 Guillermo MéndezJohnny's Henchman | Johnny's Henchman |
 Xan das BolasPotter (uncredited) | Potter (uncredited) |
 Beni DeusPadre de Johnny (uncredited) | Padre de Johnny (uncredited) |
 Tito GarcíaTed (uncredited) | Ted (uncredited) |
 Rafael HernándezMilitar (uncredited) | Militar (uncredited) |
| AA. LawrenceJohnny de niño (uncredited) | Johnny de niño (uncredited) |
 Ángel MenéndezCoronel (uncredited) | Coronel (uncredited) |
 Mario MoralesTelegrafista (uncredited) | Telegrafista (uncredited) |
 José MorenoFred (uncredited) | Fred (uncredited) |
| MMaribel del PozoJulie de niña (uncredited) | Julie de niña (uncredited) |
 Alfonso RojasCoronel (uncredited) | Coronel (uncredited) |
 Carlos Romero MarchentBob (uncredited) | Bob (uncredited) |
| SSantiago SantosAmigo de Sam y Bill (uncredited) | Amigo de Sam y Bill (uncredited) |
