A Californian doctor who appeared on Bravo reality show Online Dating Rituals of the American Male and his girlfriend have been charged with drugging, sexually assaulting and raping two women but investigators believe there could be more than 1,000 victims.

Orthopedic surgeon Grant William Robicheaux, 38, of Newport Beach, Orange County, and Cerissa Laura Riley, 32, of Brea, were charged earlier this month and on Tuesday authorities made a plea for more possible victims to come forward after police found hundreds of videos of intoxicated women believed to have been assaulted by the duo.

Orange County District Attorney Tony Rackauckas said at a news conference that women 'might have felt a false sense of security' around the pair, because they are 'clean-cut and good looking'.

'We have all heard of a wolf dressed up in sheep's clothing,' Rackauckas said. 'Well, a wolf can wear scrubs or doctors' clothing. Or the wolf can be a beautiful woman.'

Investigators believe the duo trawled bars and restaurants in Newport Beach for victims and also hunted their prey at festivals over the past few years including Burning Man, the Dirtybird Campout festival and the Splash House festival in Palm Springs.

Defense attorneys for the duo released a statement after the DA spoke and said that 'the two have have been aware of these accusations for a number of months, and each of them will formally deny the truth of these allegations at their first opportunity in court'.

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Cerissa Laura Riley (left) and Grant William Robicheaux (right) were charged earlier this month, two years after a couple of alleged victims shared their stories of drugging and rape

The duo are avid festival-goers and attended Burning Man and Splash House Festival. it is believed they hunted for victims at the festivals

They have each been charged with more than a half-dozen felonies, including rape by use of drugs, assault with intent to commit a sexual offense, and possession of a controlled substance for sale.

We have all heard of a wolf dressed up in sheep's clothing,' Rackauckas said. Well, a wolf can wear scrubs or doctors' clothing. Or the wolf can be a beautiful woman DA Tony Rackauckas

During investigations police found videos on the couple's phones that suggest they could have taken advantage of up to 1,000 women.

'There are several videos where there women in the videos appear to be highly intoxicated beyond the ability to consent or resist and they're barely responsive to the defendants' sexual advances,' Rackauckas said during the press conference in Santa Ana.

Rackauckas said that in January police searched Robicheaux's apartment and found ecstasy, date-rape drugs and cocaine.

In the first case, a 32-year-old woman told how she met the couple at a restaurant in Newport Beach in April 2016. She said the duo invited her to party on a boat.

Prosecutors claim that once she was intoxicated they 'escorted' her to Robicheaux's apartment, gave her 'multiple drugs' and then raped her.

The alleged victim called police the day after the incident to report the rape and tests proved she had multiple controlled substances in her system.

The second victim alleges she was attacked on October 2, 2016, after meeting the couple in a Newport Beach bar. She says she drank with them until she was 'unconscious' and then woke up to them 'sexually assaulting her'.

She screamed for help and neighbors called police.

A press release states Riley was also knowingly vicariously in possession of a firearm

Law enforcement is asking anyone with information to come forward and are concern they may have preyed on people at events and possibly the surgeon's patients

Robicheaux is also accused of possessing two illegal, unregistered assault rifles, four other firearms and several large-capacity magazines.

A press release states Riley was also knowingly and vicariously in possession of a firearm.

The avid festival-goers were finally arrested and charged last Wednesday after local police submitted a request to the DA on September 6, according to The Orange Country Register.

Investigators are trying to find out whether any of Robicheaux's patients were victims and are concerned people they met at Burning Man and the other festivals who may have fallen victim to the duo.

Robicheaux is known for appearing on one episode of the Bravo dating show, titled 'Three's a Crowd'. It only lasted for one season in 2014.

Robicheaux was an undergraduate at Louisiana State University and then graduated from its medical school in 2007, Rackauckas said.

Riley and Robicheaux are thought to have taken advantage of 1,000 women

He then did postgraduate work at New York University Hospital for Joint Diseases in New York City and did an orthopedic surgery residency at University of California Irvine Medical Center in Orange, California.

He was licensed to practice medicine in California on May 30, 2009.

Riley previously worked as a substitute teacher in the Fullerton School District. Her last assignment there was in October 2015 and there had been no complaints regarding her conduct. it is unclear if she is currently still teaching.

The couple have been released from custody and are scheduled to appear in court on October 24.

Robicheaux faces up to 40 years in state prison if convicted of all charges.

Riley faces up to 30 years and eight months.

A message left at Robicheaux's office wasn't immediately returned Tuesday, and a home number listed for him did not have a voicemail.

Riley's number was unlisted, and she was otherwise unable to be reached.

Anyone with information or who suspects they may have been a victim can contact Supervising Investigator Eric Wiseman at 714-347-8794.