Elon Musk, the billionaire CEO of Tesla, SpaceX, and Twitter (now X), is known for his ambitious plans to colonize Mars and revolutionize transportation. However, his personal life is just as fascinating, if not more so, than his business ventures. Recently, Musk and Shivon Zilis, a top executive at Neuralink, welcomed their fourth child together, Seldon Lycurgus. The announcement was made by Zilis herself on X, where she shared her joy, calling Seldon a “juggernaut with a solid heart of gold.” Musk’s response was a simple but telling love emoji.
This revelation adds yet another layer to Musk’s increasingly complex and public family life, which now includes a blend of children with Zilis and musician Claire Boucher, better known as Grimes. If you’ve ever wondered what a billionaire’s blended family looks like, you’re in the right place. Let’s dive in.
Musk’s Growing Family Tree
Elon Musk, now 53, has fathered 11 children with three different women. His first set of twins, Strider and Azure, were born to Shivon Zilis in November 2021, just weeks before Musk and Grimes welcomed their second child, Exa Dark Sideræl, via surrogate. In 2022, Zilis and Musk introduced the world to their daughter Arcadia. And now, baby Seldon Lycurgus has joined the family.
Musk’s other children include X Æ A-12 and Exa Dark Sideræl with Grimes, and five children with his first wife, Justine Wilson. Tragically, his first child, Nevada Alexander, passed away as an infant.
Who is Shivon Zilis?
Shivon Zilis, 38, isn’t just known for her connection to Musk. She’s a powerhouse in the tech world. Born in Canada to a Canadian father, Richard Zilis, and an Indian mother, Sharda N., Shivon’s impressive career began after she graduated from Yale University with a degree in Economics and Philosophy. She has since carved out a name for herself in artificial intelligence and tech.
In 2017, Zilis joined Neuralink, Musk’s brain-implant startup, where she serves as the Director of Operations and Special Projects. But her résumé doesn’t stop there. She’s also been involved with OpenAI as a board member and advisor and has held positions at Tesla, the Alberta Machine Intelligence Institute, and the Vector Institute. Her net worth, while not publicly disclosed, is estimated to be in the range of $15–20 million, thanks to her high-ranking roles and equity stakes in these companies.
As for Musk, his net worth is a constantly shifting figure, hovering around $250 billion as of early 2025. His wealth primarily stems from his stakes in Tesla and SpaceX, but ventures like Neuralink and The Boring Company also contribute to his financial empire.
The Blended Family Dynamics: Grimes, Zilis, and Musk
Musk’s relationships are about as straightforward as a quantum physics equation. During the time when Zilis was expecting twins, Musk was still officially dating Grimes. This led to a somewhat surprising revelation of a “blended family deal.” In September 2023, nearly two years after Zilis had the twins, Grimes publicly addressed the situation on X. After a quickly deleted tweet, she clarified that she and Zilis had connected and come to an understanding.
It’s a unique setup, to say the least—an AI executive and a synth-pop artist co-parenting children with the same billionaire entrepreneur. But somehow, they’re making it work. A source told PEOPLE Magazine that Musk “really loves Shivon,” suggesting that this isn’t just a convenient co-parenting arrangement but a genuine relationship built on mutual respect and affection.
Grimes, for her part, seems to have adapted to this unconventional family structure. The musician, known for her experimental music and futurist perspectives, shares a deep interest in AI and technology with Musk, which perhaps explains the unusual harmony between all parties involved.
What’s in a Name? A Lot, Apparently
If there’s one thing that stands out about Musk’s children, it’s their names. From X Æ A-12 to Exa Dark Sideræl, Musk’s penchant for unconventional names is well-documented. The newest addition, Seldon Lycurgus, is no exception. The name “Seldon” seems to be a nod to Hari Seldon, a character from Isaac Asimov’s Foundation series who is known for his ability to predict the future through complex algorithms—fitting for the child of an AI expert and a billionaire futurist.
“Lycurgus,” meanwhile, has historical significance, referring to the legendary lawgiver of Sparta, symbolizing strength and leadership. This mix of sci-fi and classical references suggests that Musk and Zilis have big aspirations for their son’s future.
A Family That Builds Together…
One thing is clear: whether it’s launching rockets, revolutionizing transportation, or building a family, Musk doesn’t do anything by halves. His relationship with Zilis highlights his tendency to surround himself with smart, ambitious people who share his vision for the future.
With Zilis’s expertise in AI and Musk’s resources, their partnership is more than just personal; it’s a meeting of minds. And given Musk’s interest in human-AI symbiosis through Neuralink, it’s hard not to see this as part of a much larger plan—perhaps even a generational one.
In the end, while Musk’s professional life often steals the spotlight, his personal life offers a glimpse into the man behind the billion-dollar companies. And if the past few years are any indication, his family story is far from over.
