Elon Musk admits he had ex-girlfriend Amber Heard cosplay as video game character for him

Elon Musk's biography, titled Elon Musk, has just been published and it claims that the Tesla boss asked former girlfriend, Amber Heard, to dress up as a video game character.

The biography has quite a lot to say about Musk, which is unsurprising since it's a book about him and his life, but there are some rather weird episodes it highlights.

Elon Musk, written by biographer Walter Isaacson, claims that Musk sent pictures of Grimes having a C-section during the birth of their first child to members of her family and he was 'clueless' as to why she was upset at him for doing that.

It's the biography that revealed the CEO and singer have had a third child together named Techno Mechanicus (nicknamed 'Tau'), who joins siblings X Æ A-12 and Exa Dark Sideræl.

The book also says that while Musk and Amber Heard were dating between 2017 and 2018, his family hated her 'with a passion', with Isaacson's biography claiming Musk ended up in 'a dark vortex' as family members described the relationship as 'hellacious'.

Instagram/Amber Heard

That's not the only thing the biography has claimed about Musk and Heard's relationship, with the X boss taking to his own social media site appearing to confirm one of the claims.

Elon Musk claims that while they were together, Musk asked Heard to cosplay as video game character Mercy from Overwatch and he's since posted confirmation of this with a picture.

According to the biography, the reason he asked her to dress up as a video game character was because she reminded him of Mercy.

If you've played Overwatch then you'll recognise Mercy as one of the more popular characters amidst the plethora of playable heroes, with powerful healing abilities to help her team.

Even if you haven't then you've probably seen her in those memes where someone is lying amidst rubble before an angelic looking figure reaches out a helping hand.

X/@elonmusk

Musk's biographer has said he saw the CEO go into 'demon mode' where he'd let his dark side loose and become 'unpleasant' while focusing on a task.

Isaacson said that Musk could show 'a real lack of empathy' towards those who didn't appear to share his drive for a particular task.

The term was apparently coined by Grimes, who used it to describe the moods Musk would get into when he wanted to 'get s**t done'.

According to Elon Musk, the Tesla boss is also 'pained' by his daughter cutting ties with him and abandoning his family name, while Isaacson was one of the people who shed a bit of light on the seemingly abandoned plans for Musk and Mark Zuckerberg to have a fight.