Robert Downey Jr. and Elon Musk briefly shared the screen together in 2010’s Marvel tentpole “Iron Man 2,” in which Downey’s hot shot business tycoon Tony Stark met Musk while at the Monaco Grand Prix.

Robert Downey Jr. said Elon Musk should "control his behavior a little more," jabbing the billionaire CEO who has often prompted comparisons with Tony Stark.

In the Marvel film franchise, based on the Marvel Comics, Downey Jr portrays billionaire businessman Stark, as well as his alter-ego Iron Man. In fact, this is not the first time the comparison has been made between Downey Jr’s fictional character and the real-life SpaceX founder.

Computers are stupid!” Robert Downey Jr. says with a shrug between sips of coffee in the cozy lounge of an uptown Manhattan hotel. This was his first thought after reading the script for McNeal, the gripping new play by Ayad Akhtar starring the actor and currently running at the Lincoln Center Theater.

Robert Downey Jr. calls on Elon Musk to control his behavior while acknowledging his accomplishments in a recent podcast.

Robert Downey Jr isn't mincing his words when it comes to how he feels about Elon Musk, who has been compared to his Iron Man character Tony Stark. The actor, who is set to return to the Marvel Cinematic Universe in a new role following the on-screen death of his beloved superhero character,