10 Shocking Facts About X Musk’s Son: The Latest Updates On X Æ A-Xii’s Life And Name Changes

The child of the world’s wealthiest and most polarizing figure, X Æ A-Xii Musk, remains one of the most talked-about celebrity children globally. As of late 2025, the now five-year-old son of Elon Musk and musician Grimes, known simply as 'X', continues to be at the center of media fascination, not just for his extraordinary name but for the complex and very public co-parenting dynamic between his high-profile parents. The latest updates, including new revelations about his father's expanding family and recent public appearances, confirm that X's life is anything but ordinary. Born in May 2020, the child’s original name, X Æ A-12, instantly became a global meme, a symbolic representation of the boundary-pushing nature of his parents. This article delves into the most current information, breaking down the name, the meaning, and the recent developments surrounding the boy Elon Musk calls his "protégé."

X Æ A-Xii Musk: A Complete Biography and Profile

The son of a tech titan and an avant-garde musician, X Æ A-Xii's life has been under intense scrutiny since birth. Below are the essential facts about the child known as 'X'.

• Full Name (Current Legal Name): X Æ A-Xii Musk
• Nickname: 'X' or 'Lil X'
• Original Birth Name: X Æ A-12 Musk
• Date of Birth: May 4, 2020
• Age (as of late 2025): 5 years old
• Place of Birth: Los Angeles, California
• Mother: Grimes (Claire Boucher), a Canadian musician, singer, and visual artist.
• Father: Elon Musk, CEO of Tesla, SpaceX, and owner of X (formerly Twitter).
• Siblings: X is the oldest of three children shared by Musk and Grimes, including his sister Exa Dark Sideræl Musk ('Y') and another son, Techno Mechanicus ('Tau'). He has numerous half-siblings from his father’s other relationships, bringing his father’s total number of children to 14 as of 2025.
• Parenting Status: His parents, Musk and Grimes, are no longer romantically involved but actively co-parent.

The Name That Broke the Internet: X Æ A-12 vs. X Æ A-Xii

The name X Æ A-Xii is arguably the most famous and controversial aspect of the child’s identity. The initial announcement of the name X Æ A-12 in May 2020 immediately sparked global curiosity and confusion.

The Legal Hurdle and the Roman Numeral Change:

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The original name, X Æ A-12, was quickly found to be in violation of Californian state law, which mandates that names on a birth certificate can only use the 26 letters of the English alphabet. To comply with the law while retaining the symbolic meaning, his parents made a minor but crucial alteration. The "12" was replaced with the Roman numeral "Xii," resulting in the official name: X Æ A-Xii Musk. Grimes confirmed the change, stating, "Roman numerals. Looks better tbh."

Decoding the Cryptic Symbols:

Grimes and Musk have provided a full breakdown of the name’s meaning, which is deeply rooted in technology, aviation, and esotericism:

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• X: Represents the "unknown variable," a nod to mathematics and the mysterious nature of life.
• Æ: According to Grimes, this is the "Elven spelling of Ai (love &/or Artificial intelligence)."
• A-Xii: This refers to the Lockheed A-12 Archangel, the precursor to the SR-71 Blackbird, which Musk calls the "fastest plane ever." The 'A' also stands for "Archangel," which is Grimes’ favorite song.

Despite the complexity, the child is most commonly and simply referred to by his parents and the media as 'X'.

The Latest Co-Parenting Drama and Public Scrutiny (2025 Update)

In the latter half of 2025, the co-parenting relationship between Elon Musk and Grimes became a significant source of public drama, with X Æ A-Xii at the center of the controversy. This recent tension provides the freshest insight into the child's life.

The 'X' Block and Public Plea:

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In a highly publicized incident in late 2025, Grimes claimed that Elon Musk had blocked her on his social media platform, X, while they were navigating their ongoing co-parenting relationship for their three children. This revelation highlighted the challenges of their unconventional family dynamic, with Grimes stating her sole focus was co-parenting and that she was "not interested in public dramatics."

Controversial Public Appearances:

X Æ A-Xii has made several rare but high-profile public appearances alongside his father. One of the most talked-about was a recent appearance at a political event, which included a visit to the White House's Oval Office. This public exposure drew a sharp reaction from Grimes, who made a public plea to keep her son out of the political spotlight. She expressed concern about the child being paraded on a public stage, emphasizing her desire for his privacy.

Musk's View on His Role:

Musk has openly discussed his parenting philosophy, particularly concerning his youngest children. He has stated that Grimes takes a "much bigger role" in the early years of X's life. He anticipates that his role will become more significant as the child gets older, suggesting a mentorship dynamic where he can begin to share his interests and knowledge in science and technology.

Topical Authority Entities and LSI Keywords

The story of X Æ A-Xii is connected to a vast network of people, companies, and concepts, establishing strong topical authority:

• Elon Musk
• Grimes (Claire Boucher)
• X Æ A-Xii
• Exa Dark Sideræl Musk ('Y')
• Techno Mechanicus ('Tau')
• Neuralink
• SpaceX
• Tesla Motors
• The Boring Company
• X (Social Media Platform)
• Lockheed A-12 Archangel
• SR-71 Blackbird
• Artificial Intelligence (AI)
• Co-parenting dynamics
• California Birth Certificate Law
• Nevada Alexander Musk (Musk's late first son)
• Justine Wilson (Musk's first wife)
• Shivon Zilis (mother of twins with Musk)
• Ashley St. Clair (mother of new child Romulus)
• Roman Numerals (Xii)
• Avant-garde pop music
• White House Oval Office appearance
• Musk's "protégé" statement
• Unconventional celebrity names

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