Musk and Grimes had an
on again-off again relationship beginning in 2018. Together, they share
three children: X Æ A-Xii, Exa Dark Sideræl and
Techno Mechanicus.
Grimes
(whose real name is Claire Boucher) is a Canadian musician and record producer who made her public debut with Musk at the 2018 Met Gala. She described her relationship with the billionaire entrepreneur as "very fluid" in an interview for the cover story for
Vanity Fair's April 2022 issue.
The pair
welcomed their first child, son, X Æ A-Xii, together in May 2020. Their daughter, Exa Dark Sideræl, was born via surrogate in December 2021. The birth date of their third child, son
Techno Mechanicus, hasn't been made public.
Grimes and Musk have opened up about the unique names of their children, particularly X Æ A-Xii (nicknamed "X"), who was named by the singer.
The baby's name was originally named X Æ A-12, but was later changed to X Æ A-Xii.