Elon Musk, 50, the head of Tesla Inc and billionaire entrepreneur, has surpassed Amazon ex-CEO Jeff Bezos to become the world's richest person, according to Forbes.

Musk first debuted on the Forbes billionaires list back in 2012, worth $2 billion. Now, the Tesla CEO has a net worth of $219 billion and leads a few companies, such as SpaceX, Neuralink, and The Boring Company.

Soon, he will expand that list of companies with Twitter as the social network's head Parag Agrawal recently announced that Musk will join Twitter's board of directors.

The move comes after Elon purchased 73,486,938 shares of Twitter — valued at almost $2.9 billion — which represents a 9.2% passive stake in the company. Agrawal wrote in a tweet that the Tesla CEO would bring "great value" to the company as Musk is both a "passionate believer and intense critic of the service."

Commenting on the appointment, Musk said he's eager to start working with Agrawal in order to make "significant improvements" to the social network in the "coming months."

Prior to the stock purchase, Musk tweeted he was giving a "serious thought" to developing a new social network, raising questions about Twitter's efforts to adhere to freedom of speech.

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