Enlisted as the 40th-richest person by Forbes, the 48-year-old sits atop a net worth of $22.3bn.
He's the founder, CEO and lead designer of SpaceX, aimed at reducing space transportation costs to enable Mars colonization.
He has also co-founded Tesla, an e-car manufacturer.
No wonder entertainment industry is so interested in him. Here are some of his famous cameos.
'Iron Man 2': Musk proposes, Tony Stark snidely disposes
Musk's most famous cameo was probably in Iron Man 2, which lasted 10secs, and had Tony Stark making a snide remark at his proposal, and walking away.
Pepper Potts accompanies Stark at the dinner, and this was the conversation between Stark and Musk:
Musk: Mr. Stark, I have an idea for an electric jet.
Stark: You do? Then we'll make it work.
The many connections between Musk and Stark
For the same film, the SpaceX factory was used as a location for Ivan Vanko/Whiplash's factory. In Iron Man, one can see a Tesla borrowed from Musk. The scene has Stark testing his suit, and an orange roadster can be spotted to his right.
In 'The Simpsons,' Musk had one of his wittiest appearances
In The Simpsons, Musk had one of the most funniest and wittiest appearances.
The car was designed to help project images of critically endangered species onto public buildings, including the Empire State Building and the Vatican.
The film received one Academy Award nomination, for Best Original Song, one Emmy nomination, and was premiered at the 2015 Sundance Film Festival.
'Why Him?': When Musk had a drink with Bryan Cranston
Musk meets Bryan Cranston of Breaking Bad fame at a party in a bar, have a talk and leaves the scene.
Don't know if this ever happened in real life, but it sure did happen in the 2016 romantic comedy film Why Him?
Bryan played Ned Flemming, whose daughter is in love with Laird Mayhew, an eccentric, foul-mouthed CEO of a video game company.
'Machete Kills': Musk appears absolutely in the end for seconds
In the 2013 action exploitation film, Machete Kills, we see Musk absolutely in the end, bidding goodbye to Machete (Danny Trejo), who is about to board a SpaceX Falcon 9 v1.0 rocket to depart to Luther Voz's (Mel Gibson) Station in Earth's orbit.