But it’s said that he won’t actually be able to legally give the moniker to his child.
According to TMZ, the couple aren’t legally allowed to put X Æ A-12 on the birth certificate, despite them obviously being allowed to call their baby whatever they want.
A supervisor at the Department of Public Health Vital Records Office, Los Angeles is said to have told the publication that it’s illegal to include symbols and numbers in names on birth certificates in the state of California.
The law states that only the letters of the alphabet can appear on the official documentation, meaning X Æ A-12 simply wouldn’t be allowed.
The tech billionaire, 48, left fans baffled when he revealed the unusual baby name.
Elon unveiled the name after a fan asked what they’d chosen.
One fan guessed the name was pronounced “X Ash Archangel”, and Elon appeared to confirm it by liking the tweet.
But singer Grimes, 32, later explained the name on her own Twitter account.
She wrote: “X, the unknown variable.
“Æ, my elven spelling of Ai (love &/or Artificial intelligence).”
She then explained that the name has two meanings for her and Elon.

