Calvin Klein's former toy boy is one of two men charged in a ferocious frying pan attack that saw the victim ending up in hospital.

Nicholas Gruber, 28, was handcuffed earlier this week for the brutal assault last September. His friend, 26-year-old Brandon Steele, is also accused of taking part in the fracas.

Police said the pair had attacked an unnamed 33-year-old man during a dispute about $4,000, at Steele's apartment on New York's Upper East Side.

Nicholas Gruber, 28, left and Brandon Steele, 26, right, scuffled with a 33-year-old victim over $4,000 inside Steele's apartment before allegedly hitting him with a frying pan

Gruber was handcuffed earlier this week for the assault. 26-year-old Brandon Steele is also accused of taking part in the fracas which left the victim with severe and disfiguring injuries

They pair bashed the victim with the pan so severely it left him with severe and disfiguring injuries according to the New York Daily News.

'As a result of the repeated strikes, the victim was treated at Lenox Hill Hospital for several broken bones to the back, as well as a nearly severed ear and injuries to the orbital bone that could, potentially, affect vision,' court papers say.

Gruber and Steele had known each other for years and had been pictured together at a David Barton Gym toy drive event in December 2010.

The pair have been charged with second-degree assault and unlawful imprisonment in the first degree.

Klein, 76, and Gruber who is some 48 years his junior, broke up in January 2012 (they are pictured together in 2010, right, and 2012, left)

Gruber lives in the same building as where the attack took place in an apartment he allegedly illegally occupied after breaking in and changing the lock.

When police searched his home, they found methamphetamine, $3,000 in cash, and what appeared to be a stolen package of clothes.

'Everything in my apartment is my property,' he said when confronted.

Gruber is charged with criminal trespass for being in the apartment, drug possession and possession of stolen property. He is free on $5,000 bail.

It's not Gruber's first brush with the law. The former gay porn star was arrested in 2012 after cops accused him of hiding cocaine in his underwear when they responded to a call that he assaulted a friend at the West Village penthouse apartment where he lived at the time.

Klein, 76, and Gruber who is some 48 years his junior, broke up four months prior to the wild incident but had dated for two years before reportedly growing apart.