Elon Musk’s 14 Children: A Complete, Updated List Of Names And Their Wild Meanings (2025)

Billionaire entrepreneur Elon Musk has made headlines for his ambitious ventures into space and electric vehicles, but his personal life has drawn just as much attention, particularly his rapidly growing family. As of December 2025, the Tesla and SpaceX CEO is the father of a reported 14 children with four different women, a number that has continually surprised the public and sparked global conversations about his unique approach to family planning. This comprehensive, up-to-date list details every one of his children, from his firstborn to his most recent additions, and dives deep into the complex, often cryptic, meanings behind their names.

The names chosen for his children often reflect Musk’s profound interests in science fiction, technology, and classical history, moving far beyond traditional monikers. The latest additions, Romulus and Seldon Lycurgus, revealed in reports throughout 2025, solidify his pattern of choosing names that are both deeply symbolic and entirely unique. This is the definitive guide to the full "Musk-eteer" cohort, listing their names, birth years, and the mothers who share parenthood with one of the world's most influential figures.

The Complete Biography of Elon Musk’s Children and Their Mothers

Elon Musk has fathered 14 children with four women. His first child, Nevada Alexander, tragically passed away from SIDS at 10 weeks old in 2002. The surviving 13 children range in age from their early twenties down to infancy, with the most recent births reported in 2024 and 2025.

• The Surprise Vegas Wedding And Shared Grief 5 Shocking Details Of John Schneider And Dee Dee Sorvinos Whirlwind Romance Ohirf

• Mother: Justine Wilson (Canadian Author)
• Nevada Alexander Musk (Born: 2002; Died: 2002)
• Griffin Musk (Born: 2004) - Twin with Vivian.
• Vivian Jenna Wilson (formerly Vivian Musk) (Born: 2004) - Twin with Griffin. Vivian legally changed her name in 2022.
• Kai Musk (Born: 2006) - Triplet with Saxon and Damian.
• Saxon Musk (Born: 2006) - Triplet with Kai and Damian.
• Damian Musk (Born: 2006) - Triplet with Kai and Saxon.
• Mother: Grimes (Claire Boucher, Canadian Musician)
• X Æ A-XII Musk (Nickname: X) (Born: May 2020) - Initially named X Æ A-12, later legally changed to X Æ A-XII.
• Exa Dark Sideræl Musk (Nickname: Y) (Born: December 2021) - Born via surrogate.
• Techno Mechanicus Musk (Nickname: Tau) (Born: June 2022) - Revealed in 2023.
• Mother: Shivon Zilis (Neuralink Executive)
• Strider Musk (Born: November 2021) - Twin with Azure.
• Azure Musk (Born: November 2021) - Twin with Strider.
• Arcadia Musk (Born: February 2024) - Revealed in 2025 reports.
• Seldon Lycurgus Musk (Born: 2025) - The most recent addition, reported in 2025.
• Mother: Ashley St. Clair (Political Commentator)
• Romulus Musk (Born: 2024) - Revealed in 2025 reports.

Decoding the Cryptic Names: X Æ A-XII, Exa Dark Sideræl, and Techno Mechanicus

The children Musk shares with musician Grimes are arguably the most famous due to their boundary-pushing, alphanumeric names, which read more like a complex formula than a traditional name. Their unique names are a deliberate blend of technology, astronomy, and elven language, reflecting their parents' futurist sensibilities.

X Æ A-XII Musk (X)

The name of their first son, born in 2020, was initially X Æ A-12 but was slightly modified to comply with California law, which prohibits numbers in a name. The meaning, as explained by Grimes, is a fascinating code:

• X: Represents the "unknown variable."
• Æ: Is the Elven spelling of "AI," which stands for Artificial Intelligence or "love" in some languages.
• A-XII: Refers to the Lockheed A-12 Archangel, which Grimes described as their favorite aircraft—a stealthy, unarmed reconnaissance plane. The 'A' also stands for "Archangel," her favorite song.

The name is often pronounced as "X Ash Archangel" or "X A Twelve."

• 5 Shocking Facts About Anna Congdon Penn State Sweetheart To Nfl Fiances Social Media Firestorm Cc90e

Exa Dark Sideræl Musk (Y)

Their daughter, born via surrogate, follows the same pattern of technological and astronomical references. Her nickname, 'Y,' is a natural complement to her brother's 'X.'

• Exa: A reference to the supercomputing term exaFLOPS, which is a unit of calculation speed.
• Dark: Represents "the unknown," specifically dark matter, which is the true, unseen beauty of the universe.
• Sideræl: Pronounced "sigh-deer-ee-elle," it is a more elven spelling of "sidereal," which means relating to the stars or fixed stars, and the true time of the universe.

Techno Mechanicus Musk (Tau)

Born in 2022, the name of their third child, Techno Mechanicus, continues the theme of technology and engineering. His nickname, 'Tau,' is the 19th letter of the Greek alphabet, often used in physics and mathematics, fitting for a child of a tech mogul.

The Newest Additions: Seldon, Romulus, and Arcadia

The most recent revelations about Musk’s children—Arcadia, Romulus, and Seldon Lycurgus—show a shift towards classical, historical, and science fiction literary names, signaling a broader range of intellectual inspiration.

• The Unseen Story Jessica Simpsons Battle For Privacy And Body Image In A Digital Age Mlvqa

The Shivon Zilis Children: Strider, Azure, Arcadia, and Seldon Lycurgus

Musk and Neuralink executive Shivon Zilis share four children, including a set of twins, Strider and Azure, and the two most recently reported additions.

• Arcadia Musk: This name is rooted in classic Greek literature, referring to an idyllic, pastoral land of natural harmony and paradise. It represents a break from the more aggressive, futuristic names.
• Seldon Lycurgus Musk: The most recent child, Seldon Lycurgus, is a powerful nod to history and science fiction.
  • Seldon: Almost certainly a reference to Hari Seldon, the brilliant mathematician who develops psychohistory in Isaac Asimov's seminal *Foundation* series.
  • Lycurgus: This middle name is inspired by the legendary lawgiver of Sparta, credited with the creation of the Spartan military and social system. The Greek meaning is derived from words for "wolf" and "work" or "deed."

The Ashley St. Clair Child: Romulus Musk

The child Musk shares with political commentator Ashley St. Clair, Romulus, is a distinct choice pulled straight from ancient history.

• Romulus: In Roman mythology, Romulus and his twin brother Remus are the legendary founders of Rome. This name suggests a fascination with empire-building, foundational myths, and powerful historical figures, a theme that resonates with Musk’s own ambitions.

The Legacy of the Names

The collective list of Elon Musk's children's names—from the classic Griffin and Saxon to the ultra-modern X Æ A-XII and the literary Seldon Lycurgus—paints a clear picture of a man who sees his family as part of a larger, futuristic narrative. The names serve not only as personal identifiers but also as cultural markers, blending ancient mythology with the cutting edge of science and technology. This trend ensures that the "Musk-eteers" will continue to be a topic of intense curiosity and discussion for years to come, reflecting a desire to push boundaries in every facet of life, including the most personal.