The co-founder of Tesla, Elon Musk, is facing criticism for posting a personal photo of Amber Heard, which many have found inappropriate. Some even went as far as calling him 'disgusting'.

Elon Musk, aged 52, is one of the world's richest individuals and is known for expressing his opinions, which often divides people's views on him.

Amber Heard, aged 37, is the former wife of Johnny Depp and has appeared in movies like Aquaman and The Rum Diary.

Elon Musk and Amber Heard officially started dating in 2017 but ended their relationship the following year.

Recently, Musk used his social media platform (formerly known as Twitter) to share a private photo of the actress, sparking widespread backlash.

The photo in question dates back to when they were together, depicting Heard in a costume, a practice known as cosplay, where people dress up as characters from movies, books, or video games.

In the shared picture, the actress is dressed as the video game character Mercy from Overwatch, wearing a white outfit, halo, wings, and suspenders while looking down at the camera.

It remains unclear whether Musk sought Heard's permission to share the image, and the reasons why he is keeping this photo of his ex-girlfriend is unknown.

Critics have slammed Musk for his decision to post the photo, with one person commenting: "The things we deem OK or not OK is amusing. Most of us flex on the timeline in some shape or form, this one just happens to be… well, kind of extraordinary tbh."

Another shares: "This is why you can't keep a girl, Elon."

"Sorta goes without saying but Elon Musk tweeting out a photo of Amber Heard in cosplay for his weird fanboys to drool over is f***ing disgusting," somebody else writes.

A fourth user comments: "Hopefully this was approved by her.. we don't need another controversy."

Details from Elon Musk's biography, titled 'Elon Musk,' have reportedly surfaced, disclosing: "He told her that she reminded him of Mercy, his favourite character in the video game Overwatch."

"So she spent two months designing and commissioning a head-to-toe costume so she could role-play for him."

Replying to a tweet about the incident, Musk commented: "She did dress up as Mercy. It was awesome."

The highly-anticipated Elon Musk biography was released on September 12, aiming to offer readers a deeper understanding of the SpaceX CEO and shed light on the enigmatic mind of Elon Musk.