First up is Carlos, who was a surf instructor before the apocalypse. A 'Survivor', with Athletic and Shooting skills, wielding a pump-action shotgun and a revolver.
Samson was a movie stuntman before the apocalypse. He lived in a beautiful beach house on the island. Since the apocalypse he has found that his athleticism and martial arts training have been skills very much in demand. Samson is a 'Tough Guy' with Athletics and CQC skills. he is armed with a surplus SMG, a revolver and a knife.
Brad was a college frat boy on vacation when the apocalypse trapped him on the island. He is smart and resourceful, but was also a bit of a jock back before the apocalypse. He is a 'Survivor' with Academic and Athletic skills. He carries a Surplus Assault Rifle and a knife.
Patch is an escaped convict, who used the chaos and confusion of the earliest days of the apocalypse to escape from prison. I am sure he could have easily found new clothes but for some reason he prefers to keep on his orange prison uniform. Maybe he just thinks it is intimidating.
He is a 'Goon' with CQC and Athletic skill. He is using a pump action shotgun and semi-automatic he stole from a prison guard. he also carries his trusty shiv.