Robert Downey Jr.'s mum gave him warning before controversial Tropic Thunder 'blackface'

Robert Downey Jr says his mum gave him a bit of a warning before Tropic Thunder hit the cinemas.

The Iron Man actor, who turns 59 on Friday (4 April), famously starred as Kirk Lazarus in the 2008 film.

In the film, Lazarus is a white Australian method actor who undergoes 'pigmentation alteration' to play a black character, which sees Downey Jr's perform in blackface.

Amid the controversy, director Ben Stiller explained that the intent was to satirise actors who go to extreme lengths for awards.

He went as far as to say he does not regret using the character in the film, and refuses to apologise.

Now, in a 2020 episode of The Joe Rogan Experience, Downey Jr admitted that his mum was 'horrified' after finding out what his role was in Tropic Thunder.

He claims she told him: "Bobby, I’m telling ya, I have a bad feeling about this."

Downey Jr admitted that he had some doubts about the part too, but then realised: "I get to hold up to nature the insane self-involved hypocrisy of artists and what they think they’re allowed to do on occasion.

"[Ben Stiller] knew exactly what the vision for this was, he executed it, it was impossible to not have it be an offensive nightmare of a movie.

"And 90 percent of my black friends were like, ‘Dude, that was great.’ I can’t disagree with [the other 10 percent]."

Robert Downey Jr famously portrayed Kirk Lazarus in 2008's Tropic Thunder (DreamWorks Pictures)

He went on to say he 'knows where his heart lies', however, he added that it's 'never an excuse to do something that’s out of place and out of its time, but to me it blasted the cap on [the issue]'.

"I think having a moral psychology is job one. Sometimes, you just gotta go, ‘Yeah I effed up.’ In my defence, Tropic Thunder is about how wrong [blackface] is, so I take exception."

Despite all the noise around the role, Downey Jr was nominated for Best Supporting Actor at the Oscars for his role.

Then in 2024, Robert Downey Jr went that one step further and won the Academy Award for best supporting actor in Oppenheimer.

While promoting the movie that year, he compared Tropic Thunder to Norman Lear’s sitcom All in the Family, whilst noting a disclaimer at the start of the show.

In 2024, he told Variety: "There used to be an understanding with an audience, and I’m not saying that the audience is no longer understanding — I’m saying that things have gotten very muddied.

"The spirit that [Ben] Stiller directed and cast and shot Tropic Thunder in was, essentially, as a railing against all of these tropes that are not right and [that] had been perpetuated for too long."