Elon Musk and Grimes cycled through multiple names for their daughter, per Musk's new biography.
Both wanted to call her Sailor Mars, after the anime character, before settling on Exa Dark Sideræl.
But they contemplated changing her name to Andromeda Synthesis Story Musk earlier this year.
Musk shares three children with Grimes — elder son X Æ A-Xii, known as X; daughter Exa Dark Sideræl, known as Y; and younger son Techno Mechanicus , known as Tau.
Besides his Grimes' children, the billionaire has twins with Neuralink director Shivon Zilis , and five older children with his ex-wife, Justine Musk .
Persons:
Elon Musk, Grimes, Mars, Elon, Grimes —, Techno, Walter Isaacson, Sailor Mars, Isaacson, Musk, Shivon Zilis, Justine Musk
Organizations:
Service, Musk
Locations:
Wall, Silicon