Alleged crypto torturer William Duplessie once did something so allegedly outrageous at the ritzy Aman in NYC that he was kicked out of the property, a source tells Page Six.

Duplessie and fellow accused crypto investor John Woeltz — who are facing kidnapping charges over allegations they sadistically tortured an Italian crypto millionaire, Michael Valentino Teofrasto Carturan, for his Bitcoin password — are said to have once been living at the luxe 57th Street space, according to TMZ.

The Aman offers pricey $100,000 private club memberships that include access to areas such as an outdoor space and jazz club.

A source tells us they once spotted Duplessie hanging out in the 14th floor members-only area.

A source further tells us that Duplessie did something so over-the-top that the crypto bro and his bud kicked out.

And we hear word of the mysterious incident reached the ears of other hospitality bigs around town, who then did not want business from the club-going party bros.

The spot is owned by Russian billionaire Vladislav Doronin, who paid $135 million for the 12,536-square-foot penthouse last year.

The global chain is a favorite of Bill Gates, Mark Zuckerberg, the Kardashians, Angelina Jolie, David Beckham, George and Amal Clooney, Tom Hanks and members of various royal families.

Duplessie and Woeltz later moved into a multistory townhouse in Soho, where sources tell us they threw ragers until 7a.m.

But that party pad turned into a purported house of horrors when Duplessie and Woeltz allegedly tied Carturan to a chair, pistol-whipped him, cut his arms and legs and dangled him from the top of a staircase, according to authorities.

Carturan managed to escape after almost three weeks, shoeless and battered, and ran to a NYPD officer, The Post reported.

“This was a kidnapping for roughly 17 days where they tortured this person. When I say torture, forced them take narcotics, put his feet in water, and shocked his feet and other types of torture for 17 days,” NYPD Chief John Chell said.

Duplessie is facing charges of kidnapping, unlawful imprisonment, assault and weapons possession, and he was remanded without bail in court Tuesday night.

He appeared in Manhattan Criminal Court, where his lawyer claimed the 33-year-old crypto trader’s criminal case will “begin to unravel” when more details come out.  

“The facts here are hotly disputed, his involvement is hotly disputed,” attorney Sanford Talkin claimed to Judge Julieta Lozano during his nighttime hearing, The Post reported.

Talkin asked the judge to release Duplessie on $1 million bail, claiming he would not flee the Big Apple. He also said his client would live with his dad — who attended the hearing — and was willing to wear an ankle monitor.

“If he was a risk of flight, he wouldn’t have gotten an attorney,” Talkin told the judge. “He would’ve been out of here.”

Duplessie’s next court date is Friday.

Woeltz has been arraigned on the same charges and is being held without bail at Rikers Island. But a relative has claimed to The Post that Woeltz was “manipulated” and “completely controlled by other people.”