Gina (Regina Carroll) is an antagonist in the 1969 action film "Satan's Sadists".
Gina is a member of the outlaw biker gang called the Satans. They are led by a man named Anchor (Russ Tamblyn). Gina is known by the gang as the "Freak Out Girl".
The gang exist to beat, kill and rape. They drop in at a roadside diner manned by Lew (Kent Taylor) and Tracy (Jacqueline Cole). Three other customers have also turned up - a middle aged policeman and his wife and a Vietnam Vet called Charlie (Scott Brady).
Gina performs a sexy dance on a table, arousing the vicious gang until Lew puts a quick stop to it. A fight breaks loose, and the bikers get a hold of the cop's pistol. Anchor and his cohorts escort the cop, his wife and old Lew outside to teach them a lesson. Johnny and Tracy stay behind to tend to one of the members that was hurt in the fight.
Anchor ties up his elder prisoners, and rapes the cop's wife. After shooting all three victims they return to the diner. Tracy is raped violently by the gang, which makes Gina a little jealous.
Charlie and Tracy escape after killing two of the Satans, fleeing into the desert. Anchor and his pals give chase, also encountering three young female geologists. Of course, the three young women are all soon raped and murdered after being fed stew spiked with LSD.
Gina ends up killing herself by riding over a cliff after being rejected cruelly too many times by Anchor, finally being punched in the stomach. We watch Gina riding at high speeds over the desert on her chopper as the bikers have sex with two of the drugged women.
Gradually, the tables are turned on the remaining bikers as they are killed by deadly snakebite, landslides and their own stupidity. Soon only Anchor is left to fight Charlie in a duel to the death.