Elon Musk revealed where his and Shivon Zilis‘ rarely seen twins‘ unusual names came from.

The Tesla CEO responded to Tesla Owners Silicon Valley tweeting a photo Wednesday of Musk kneeling beside the 4-year-olds, whose backs were to the camera as their dad smiled at them.

Musk, 54, explained that his son Strider Sekhar was “named after Aragorn” from “The Lord of the Rings,” whose nickname is Strider.

Elon Musk kneeling and embracing two children, one in a "SpaceX" shirt, in a large industrial setting.
Elon Musk broke down the unusual inspiration behind his and Shivon Zilis’ twins’ names.teslaownersSV/X

Shivon Zilis and Elon Musk sit on a couch with their twin babies.
The Tesla CEO made the reveal Thursday in response to a photo of himself and the rarely-seen 4-year-olds.@WalterIsaacson / Twitter
The toddler’s middle name, meanwhile, was inspired by “great Indian physicist [Subrahmanyan] Chandrasekhar.”

As for Musk’s daughter Comet Azure, her moniker is “the most powerful spell in [the video game] ‘Elden Ring.’”

The businessman did not specify how he and Zilis, 39, came up with names for their other two children.

Elon Musk, Shivon Zilis, and their twins wearing sunglasses.
Strider Sekhar’s first name comes from a “Lord of the Rings” character.X / @shivon

Elon Musk in a suit and white shirt, with his hands clasped, speaking at an event.
Musk, pictured above in June 2023, chose a middle name inspired by physicist Subrahmanyan Chandrasekhar.AFP via Getty Images
Their daughter Arcadia was born in February 2024, followed by son Seldon in February 2025.

In addition to Musk’s four kids with the Neuralink executive, he has welcomed 10 more children with other partners over the years.

He became a dad in 2002 when he and then-wife Justine Wilson’s son Nevada arrived, with the infant tragically dying days later.

Elon Musk gives two thumbs up at the Axel Springer Award.
Musk, pictured above in 2020, named Comet Azure, meanwhile, after an “Elden Ring” spell.Getty Images

Elon Musk in a suit and tie, looking upwards at the U.S.-Saudi Investment Forum.
Musk, pictured above in November 2025, and Zilis are also the parents of Arcadia and Seldon.REUTERS
The former couple’s twins, Griffin and Vivian, were born in 2004, followed by triplets Kai, Saxon and Damian in 2006.

Musk is estranged from Vivian, whom he once claimed was “killed” by the “woke-mind virus,” but quipped to the Financial Times in 2022 that he “can’t win them all.”

The SpaceX CEO also shares three children with Grimes — son X AE A-XII, 5, daughter Exa Dark Sideræl, 4, and son Techno Mechanicus, 3.

Elon Musk leaning over to look at his newborn son, X, sleeping on a couch next to a blue plush toy.
The businessman has 10 other children with his other partners.grimes/Instagram

Grimes holding her baby daughter in front of robot statues.
Musk welcomed six with Justine Wilson, three with Grimes, pictured above, and one with Ashley St. Clair.grimes/Instagram
The exes have been engaged in a messy custody battle since ending their on-again, off-again relationship in 2022.

Musk has also been confirmed as the father of Ashley St. Clair’s son Romulus, born in September 2024 — after he shed doubt on the political commentator’s paternity claims.

While St. Clair told the New York Times in May 2025 that Musk once told her he’d fathered a child with a Japanese porn star and would offer his sperm to “anyone,” he has yet to address the 27-year-old’s allegations.