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The 14 'Musk-eteers': A Complete, Updated List Of Elon Musk's Children, Their Unique Names, And Recent Controversies

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As of December 2025, Elon Musk is the father of 14 children with four different women, a complex and rapidly growing family that continues to generate global headlines. The sheer number and the exceptionally unique names of the "Musk-eteers" have turned the tech mogul's personal life into a subject of intense public fascination, driven by his stated belief in the need to combat underpopulation. This updated guide provides the most current details on every one of his children, from the eldest twins to the most recently announced arrivals. The latest additions and revelations, including a new child with conservative author Ashley St. Clair and a fourth with Neuralink executive Shivon Zilis, confirm Musk's commitment to expanding his family. Furthermore, the public discourse surrounding his transgender daughter, Vivian Jenna Wilson, and his frequent public appearances with his son, X Æ A-Xii, keep the Musk family saga at the forefront of the news cycle.

The Complete Biography List of Elon Musk's 14 Children

Elon Musk's children span two decades, with multiple sets of twins, a set of triplets, and the most recent additions announced in early 2025. This list is presented in approximate chronological order based on public announcements and birth records.
  • Nevada Alexander Musk (Deceased)
    • Mother: Justine Wilson
    • Born: May 2002
    • Status: Tragically passed away from Sudden Infant Death Syndrome (SIDS) at 10 weeks of age.
  • Griffin Musk (Twin)
    • Mother: Justine Wilson
    • Born: April 15, 2004
    • Details: Griffin is the older of the first set of twins, conceived via in vitro fertilization (IVF).
  • Vivian Jenna Wilson (Twin, formerly Xavier Alexander Musk)
    • Mother: Justine Wilson
    • Born: April 15, 2004
    • Details: Born as Xavier, she legally changed her name to Vivian Jenna Wilson and her gender identity in 2022, choosing to take her mother's maiden name and severing ties with her father.
  • Kai Musk (Triplet)
    • Mother: Justine Wilson
    • Born: January 1, 2006
    • Details: One of a set of triplets, all conceived via IVF.
  • Saxon Musk (Triplet)
    • Mother: Justine Wilson
    • Born: January 1, 2006
    • Details: Part of the 2006 triplets.
  • Damian Musk (Triplet)
    • Mother: Justine Wilson
    • Born: January 1, 2006
    • Details: The third of the triplets.
  • Strider Musk (Twin)
    • Mother: Shivon Zilis (Neuralink Executive)
    • Born: November 2021
    • Details: One of a set of twins born just weeks before the birth of Exa Dark Sideræl, revealed in mid-2022.
  • Azure Musk (Twin)
    • Mother: Shivon Zilis (Neuralink Executive)
    • Born: November 2021
    • Details: Strider's twin sister.
  • X Æ A-Xii Musk
    • Mother: Grimes (Claire Boucher)
    • Born: May 4, 2020
    • Details: Known simply as 'X,' his original name was X Æ A-12, later changed due to California legal restrictions on using numerals. He is frequently seen with his father at public and professional events.
  • Exa Dark Sideræl Musk
    • Mother: Grimes (Claire Boucher)
    • Born: December 2021 (via surrogate)
    • Details: Nicknamed 'Y,' her existence was revealed in a March 2022 interview.
  • Tau Techno Mechanicus Musk
    • Mother: Grimes (Claire Boucher)
    • Born: June 2022
    • Details: The third child with Grimes, nicknamed 'Tau,' his name was revealed in Walter Isaacson's 2023 biography of Musk.
  • Arcadia Musk
    • Mother: Shivon Zilis
    • Born: Undisclosed (one of the four children with Zilis)
    • Details: The third child with Zilis, whose name was revealed in 2024.
  • Romulus Musk
    • Mother: Ashley St. Clair (Conservative Author)
    • Born: September 2024
    • Details: The existence of this child was confirmed by St. Clair in February 2025, adding a new mother to the Musk family tree.
  • Seldon Lycurgus Musk
    • Mother: Shivon Zilis
    • Born: Undisclosed (fourth child with Zilis)
    • Details: The newest confirmed child, Seldon Lycurgus, was announced in late 2024/early 2025, bringing the total count to 14.

The Ongoing Controversy Surrounding Vivian Jenna Wilson

The relationship between Elon Musk and his daughter, Vivian Jenna Wilson, has been a major focus of media attention, particularly due to her decision to legally separate from her father and change her name. Born as Xavier Alexander Musk, Vivian filed the paperwork shortly after turning 18, stating she no longer wished to be related to her biological father "in any way, shape or form." The controversy intensified in late 2024 and early 2025 when Musk publicly addressed the situation on his social media platform, X (formerly Twitter). In a series of highly criticized posts, he referred to Vivian as his "son" and attributed her transition and estrangement to what he termed a "tragic mental illness," a statement that sparked a significant public backlash and drew criticism from various political and social commentators. This public disagreement highlights a profound personal and ideological rift within the family of the world’s wealthiest man, contrasting sharply with Musk’s public persona as a proponent of free speech and technological progress.

The 'X' Factor and The Meaning Behind The Names

The names of Elon Musk's children with musician Grimes (Claire Boucher) are arguably the most famous and complex, designed to be unique identifiers rather than traditional monikers.

X Æ A-Xii (The Son Known as 'X')

The name X Æ A-Xii, often shortened to 'X' in public, is a blend of technological and mythological references:
  • X: The unknown variable.
  • Æ: The Elven spelling of 'Ai' (love and/or Artificial Intelligence).
  • A-Xii: A reference to the Lockheed SR-71 Blackbird's predecessor, the A-12 Archangel, which Grimes and Musk have called their favorite aircraft.
'X' has become a familiar face, frequently appearing on his father's shoulders at business meetings, Oval Office visits, and major company events like the Tesla Cyber Rodeo. His visible presence contrasts with the high level of privacy maintained for most of Musk's other children.

Tau Techno Mechanicus and Exa Dark Sideræl

The other two children with Grimes follow a similar pattern of unique, futuristic naming:
  • Tau Techno Mechanicus ('Tau'): The name "Techno Mechanicus" is a nod to the technological and mechanical worlds, with 'Tau' being a common Greek letter used in mathematics and engineering. The name was kept secret for over a year before being revealed in a biography.
  • Exa Dark Sideræl ('Y'): The name is a combination of 'Exa' (a supercomputer term), 'Dark' (the unknown), and 'Sideræl' (a more elven spelling of 'sidereal,' relating to the stars).

The Drive for Procreation: Population Collapse as a Key Entity

The size of Elon Musk's family is directly tied to his public and frequently expressed concern over what he calls "underpopulation" and the declining birth rates in developed nations. This is not merely a personal choice but a philosophical and ideological stance that he views as one of the biggest threats to human civilization. Musk has openly encouraged his employees and the general public to have more children, often stating that he is "doing his part" to address the demographic crisis. His partnership with Shivon Zilis, an executive at his brain-chip company Neuralink, to have four children—including the newest addition, Seldon Lycurgus—is seen by many as a direct extension of this pro-natalist philosophy. The children are often referred to as "Musk-Zilis twins" or "Musk-Zilis children" and are being raised with a focus on high-level education and technological literacy. The entity of the 'Musk family' is, therefore, not just a personal unit, but a public, living experiment in addressing a perceived global existential risk, making the lives of each "musk son" and daughter a matter of continuous, high-stakes public interest.
The 14 'Musk-eteers': A Complete, Updated List of Elon Musk's Children, Their Unique Names, and Recent Controversies
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