(CNN) Before Grant William Robicheaux was accused of rape, he charmed audiences on a reality TV dating show, lamenting how difficult it was for a busy surgeon like him to meet the right woman.

Fast-forward four years, and California authorities say he and his current girlfriend used their good looks and charm to drug and rape at least two women.

Robicheaux, 38, and Cerissa Laura Riley, 31, are charged with rape by use of drugs, oral copulation by anesthesia or controlled substance, assault with intent to commit sexual offense, and possession of a controlled substance for sale. Robicheaux is also accused of firearms violations.

Grant William Robicheaux and Cerissa Riley will be arrainged on October 25.

After investigating videos on Robicheaux's phone, authorities worry there may be hundreds more victims.

On Wednesday, when asked for an update on the case, Orange County District Attorney Chief of Staff Susan Kang Schroeder said six new possible victims have come forward, and more than 30 people have called investigators.

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