“I was born bad.”

Las Vegas madman Stephen Paddock made the proclamation to a high-priced hooker while engaging in “violent’’ rape fantasies to celebrate his big casino wins, according to a report Sunday.

Paddock blamed his bank-robbing dad for his “dark and twisted side,” the 27-year-old prostitute told Britain’s The Sun newspaper.

“I didn’t have anything really to do with him, but the bad streak is in my blood. I was born bad,’’ Paddock told the hooker, according to The Sun.

The prostitute said the 64-year-old retired accountant paid her as much as $7,500 a night to join him for “really aggressive and violent sex,’’ which included “rapes.”

She said Paddock, who methodically planned and executed the nation’s deadliest mass-shooting in modern history last week, would tie her up and order her to “scream’’ for help.

“But even so, I could never have imagined he would do something like this,” the call girl said, referring to Paddock’s shooting rampage in Vegas that killed 58 and left nearly 500 more injured.

She added that Paddock was a conspiracy theorist who believed the US government perpetrated the 9/11 terror attacks.

The pair met nine times between November 2015 and June 2016, the woman said.

Paddock was seen with another hooker in the hours leading up to the massacre. She was not involved in his heinous crime, according to investigators.

He sent his longtime girlfriend, Marilou Danley, on a trip to her native Philippines while he planned and executed the attack, even wiring her $100,000 to buy a home for herself.

A fuller picture of the shooter is slowly emerging as investigators turn over every stone they can find in search of his elusive motive.

Paddock had a “God complex” and expected to be waited on hand and foot, according to John Weinreich, a former host at the Atlantis Casino Resort Spa in Reno, which Paddock frequented in recent years.

Paddock’s brother, Eric Paddock, called him “the king of micro-aggression.” He recalled how his sibling would carry a cigar even though he did not smoke, just so he could light up and blow smoke in the face of others who he felt wronged him.

The FBI said Sunday that workers are still cleaning the blood off the thousands of personal items left behind as frightened concert-goers fled las week’s massacre.

Bloody purses, shoes and cellphones were among the items abandoned in the chaos when Paddock opened fire on 22,000 people at an outdoor concert, according to Paul Flood of the FBI’s Office for Victim Assistance.

With Wire Services