In a family as eccentric and spotlight-driven as the Musk clan, one child has remained notably hidden from the public eye—Tau Techno Mechanicus Musk. Born in 2022 to Elon Musk and musician Grimes, Tau is not only one of the most unusually named children in the world but also among the most mysterious.
Despite being the son of one of the most recognized figures in tech history, Tau’s life is cloaked in privacy. While his older siblings have occasionally stepped into public view, Tau remains in the shadows—known mostly by name, not by face.
Quick Bio
| Full Name | Tau Techno Mechanicus Musk |
|---|---|
| Nickname | Tau |
| Date of Birth | June 2022 |
| Age | 3 years old (as of July 2025) |
| Place of Birth | United States (undisclosed) |
| Parents | Elon Musk & Grimes |
| Siblings | X Æ A‑Xii, Exa Dark Sideræl, others |
| Gender | Male (assumed) |
| Nationality | American |
| Physical Appearance | Not publicly revealed |
| Public Photos | None released |
| Social Media | None |
| Famous For | Youngest and most private Musk child |
A Child of Two Worlds
Tau was born in June 2022, through a surrogate, making him the third child of Elon Musk and Grimes (Claire Boucher). At the time of writing in July 2025, he is 3 years old.
His parents come from vastly different but equally ambitious worlds. Elon Musk is the billionaire tech mogul known for companies like Tesla, SpaceX, and Neuralink. Grimes, on the other hand, is a genre-defying musician and visual artist with a deep love for science fiction, futurism, and mythology. Their relationship has always been as complex as it is creative—and that complexity extends to the way they choose to raise their children.
What’s in a Name?
The name “Tau Techno Mechanicus” is nothing short of a conversation starter.
- Tau: In mathematics, Tau (τ) represents the ratio of a circle’s circumference to its radius, approximately 6.28. This is widely seen as a nod to Elon Musk’s birthday, June 28.
- Techno Mechanicus: A likely reference to Warhammer 40K’s Adeptus Mechanicus, a fictional religious cult that worships technology and machinery. It also echoes Grimes’ own artistic sensibilities—blending mysticism with high-concept sci-fi.
Together, the name symbolizes the fusion of mathematics, technology, philosophy, and science fiction, encapsulating both parents’ ideals.
An Invisible Childhood
Unlike his siblings, Tau has never appeared in public. No photographs have been released, no interviews or brief sightings. His face has never been shared on social media, and both parents—especially Grimes—have remained firm in their decision to shield him from media attention.
In fact, Grimes has openly pleaded for privacy, even addressing Elon Musk publicly and requesting that their children be kept offline.
“I wish I could show you how cute little Techno is,” she once wrote, “but my priority is keeping my babies out of the public eye.”
This strong boundary has set Tau apart, not only from his siblings but also from most other children born into fame.
Family Ties
Tau is the youngest of three children born to Elon Musk and Grimes:
- X Æ A‑Xii (“X”) – Born in May 2020.
- Exa Dark Sideræl (“Y”) – Born in December 2021, via surrogate.
- Tau Techno Mechanicus (“Tau”) – Born June 2022, also via surrogate.
Beyond these three, Elon Musk has at least eleven other children from various relationships, including his first wife Justine Wilson and Neuralink executive Shivon Zilis. Names like Griffin, Vivian, Kai, Saxon, Damian, Strider, and Azure round out a truly unique and expansive family.
Despite the public nature of Musk’s life, Tau has remained uniquely untouched by the chaos and curiosity that surrounds his siblings.
What Does He Look Like?
Here’s the most fascinating part: no one really knows.
Grimes once said Tau had “eyes that look deep into your soul,” describing him as resembling a “little Vulcan,” a nod to Star Trek’s stoic and wise alien race. This suggests he might have a calm, introspective personality—quiet, thoughtful, and maybe a little bit alien in the best way.
That said, there are no verified pictures, and no specific details about his height, weight, or appearance have been shared. His look, like much of his life, remains a mystery.
Net Worth and Lifestyle
Tau doesn’t have a personal net worth, but it’s safe to say he was born into immense wealth.
His father, Elon Musk, is one of the richest people on the planet, with a fluctuating net worth that has ranged from $200 billion to $250 billion USD. Grimes also maintains financial independence through her music career and artistic ventures.
Tau will almost certainly grow up in an environment filled with cutting-edge technology, private tutors, global travel, and perhaps even Mars colonization plans. However, how much of that he’ll be exposed to—or how early—remains up to his parents’ approach to childhood development.
Social Media Silence
Unlike many celebrity children, Tau has zero social media presence.
Grimes has made it clear that she believes children should be able to choose when and if they want to be in the public eye. This aligns with growing conversations around digital consent, especially for minors born into fame.
While fans occasionally speculate or joke about his existence online, his parents rarely post about him, and no verified social handles are associated with him.
Public Curiosity and Speculation
When Tau’s name was first revealed in 2023 through Walter Isaacson’s biography of Elon Musk, the internet lit up.
Twitter, Reddit, and forums like Warhammer and sci-fi communities reacted with a mix of awe, humor, and bewilderment.
Some saw the name as an act of genius. Others thought it was an extension of Musk’s brand of eccentricity. One Reddit user joked, “He sounds like the final boss in a tech-based RPG.” Another said, “I swear Elon is naming kids like he’s building a sentient army.”
Yet behind the memes and banter, a deeper curiosity lingered: Who is this child, really? And what will his life look like?
Future Unknowns
Given his age, Tau’s future is completely unwritten. He could grow up to become a physicist, an artist, a programmer—or something entirely unexpected.
What we do know is that he’ll have access to the best education, the latest technology, and a complex family legacy to navigate. Whether he chooses to embrace that spotlight or avoid it altogether will be up to him.
With Grimes emphasizing independence and Elon obsessed with human potential, Tau’s path could be both heavily influenced and fiercely autonomous.
Final Thoughts
Tau Techno Mechanicus Musk may be young, but his story is already one of the most intriguing in the Musk family.
He represents a new type of celebrity child—one born into global fame yet raised away from it. His name tells a story of symbolism, innovation, and imagination. His life, thus far, tells a story of protection, privacy, and possibility.
In a world where everything is shared, Tau remains a question mark. And maybe that’s the most powerful statement of all.
FAQs About Tau Techno Mechanicus Musk
1. Who is Tau Techno Mechanicus Musk?
Tau is the youngest son of Elon Musk and musician Grimes, born in June 2022 via surrogate. His name and life have sparked fascination due to his mystery and complete absence from the public eye.
2. Why is Tau kept out of the spotlight?
Grimes and Elon Musk have chosen to protect Tau’s privacy. Grimes, in particular, believes children should have the right to choose when they appear publicly.
3. What does Tau’s name mean?
“Tau” references a mathematical constant, while “Techno Mechanicus” is likely inspired by sci-fi and tech symbolism. Together, the name reflects both parents’ futuristic worldviews.
4. Are there any public photos of Tau?
No, there are currently no public images of Tau. His appearance, lifestyle, and personality have been kept strictly private.
5. Will Tau follow in Elon or Grimes’ footsteps?
It’s too early to tell. With access to science, art, and technology, Tau could carve his own unique path in either—or both—worlds.