Leonardo DiCaprio ordered to testify in 'Wolf of Wall Street' lawsuit: Ex-banker depicted in film claims his nickname was changed from 'Wigwam' to 'Rugrat' and damaged his reputation to tune of $15m

Oscar-winning actor, Leonardo DiCaprio, has been ordered by a judge to give testimony in a $15 million defamation lawsuit brought on by a former New York executive over his 2013 blockbuster, The Wolf of Wall Street. 

Andrew Greene, who was an executive at Stratton Oakmont, a brokerage that defrauded many shareholders, claims that his alleged depiction in Martin Scorsese's Wolf of Wall Street damaged his reputation, according to the Hollywood Reporter. 

Judge Steven Locke ruled that DiCaprio's deposition would take place 'at a reasonable time and place agreed to by the parties'.

Oscar-winning actor, Leonardo DiCaprio (left), has been ordered by a judge to give testimony in a defamation lawsuit brought on by former New York executive, Andrew Greene (right) who claims that his alleged depiction in Martin Scorsese's The Wolf of Wall Street damaged his reputation 

DiCaprio, who earned an Academy Award nomination for best actor for his role as the fast-living businessman Jordan Belfort in the movie, is set to be grilled by Greene's lawyers

Greene, who was a Stratton Oakmont executive, claims that the 2013 film changed his nickname from 'Wigwam' to 'Rugrat' and spread untruths about him. PJ Byrne is pictured (left) portraying 'Rugrat' in the movie

DiCaprio, who earned an Academy Award nomination for best actor for his role as the fast-living businessman Jordan Belfort in the movie, is set to be grilled by Greene's lawyers, according to the New York Daily News.

Greene, who claims the movie portrayed him as a prostitute-loving degenerate named Nicky 'Rugrat' Koskoff, is suing producers including Paramount Pictures, DiCaprio's Appian Way Productions and others over the character played by actor PJ Byrne, according to the Hollywood Reporter. 

He alleged that the film spread untruths about hims and changed his nickname from 'Wigwam' to 'Rugrat'.

The suit claims that the toupee-wearing character, Rugrat, closely resembles Greene and portrayed him as a 'criminal' and a 'degenerate'. 

US magistrate Judge Steven Locke ruled that DiCaprio 'will be produced for his deposition 'at a reasonable time and place agreed to by the parties' 

The suit claims that the toupee-wearing character, Rugrat (pictured), closely resembles Greene and portrayed him as a 'criminal' and a 'degenerate'

Last year, lawyers for Paramount Pictures argued that the Koskoff character was a fictional composite of many different people in Belfort's memoir.

'Some or all of the allegedly defamatory statements complained of by plaintiff (Greene) are true or substantially true, and thus cannot give rise to any claim against any defendant,' said Paramount in their court papers, obtained by the Daily News. 

They further claimed the film is protected by the First Amendment and the makers did not act with any malice, as required in a defamation case.

Defendants are currently arguing that Scorsese and screenwriter Terence Winter had already given testimony, and that plaintiffs didn't give any reason why they needed to question DiCaprio, according to the Hollywood Reporter.

Greene's lawyers indicated that they had tried to depose DiCaprio but couldn't because he was 'too busy', according to PageSix. 

They said DiCaprio, who co-produced the movie, was a 'driving force' behind getting the flick made and is 'knowledgeable' of particular issues in the case, according to a court filing.

The judge's decision comes just days after disgraced money manager, Dana Giacchetto (pictured), who worked with A-list celebrities, like DiCaprio and Cameron Diaz, was found dead inside his Upper West Side apartment foaming at the mouth following a weekend of heavy partying

Giacchetto (right) reportedly gave DiCaprio (left) inspiration for his role of disgraced stockbroker Jordan Belfort in the 2013 film 'The Wolf Of Wall Street' (left)

The judge's decision comes just days after disgraced money manager, Dana Giacchetto, who worked with A-list celebrities, like DiCaprio and Cameron Diaz, was found dead inside his Upper West Side apartment foaming at the mouth following a weekend of heavy partying.

Giacchetto, 53, who plead guilty to securities fraud in 2001, was found dead by his roommate on Sunday morning, the New York Daily News reported.

The cause of death for the father-of-two has not been confirmed.

Giacchetto reportedly gave DiCaprio inspiration for his role of disgraced stockbroker Belfort in The Wolf Of Wall Street. 

In 2000, Giacchetto was busted for stealing nearly $20 million from actors like Ben Stiller, Matt Damon and DiCaprio.

He used the stolen money to support his investment firm and fund a lavish lifestyle on the Hollywood party network.