Who is Julz O’Brien? All about Dylan O’Brien’s non-binary sibling amid claims they haven’t spoken in over a year

Dylan O’Brien’s non-binary sibling, Julz O’Brien, has opened up about their relationship, revealing that their ties are strained.

Julz commented on an Instagram post by Gay Times shared on May 4, 2025, which highlighted Dylan’s alleged close bond with his trans sibling. The article mentions his interview with Vulture, where he spoke about being familiar with queer people in his personal life while promoting his film Ponyboi.

The Teen Wolf actor said:

“I have a trans, nonbinary sibling and I know people in my personal life as well who are queer, and I am so grateful for how much it deepens my experience in this world.”⁠

He is Dylan’s elder sibling, and they are 16 months apart. He was born on April 17, 1990, in New York, per Famous Birthdays.

Here are more details about Julz O'Brien and how he reacted to Dylan O’Brien’s side of the story.

What were the claims made by Julz O’Brien? All about Dylan O’Brien’s trans sibling

Correcting the record of the story posted by Gay Times on Instagram, Julz O’Brien took to the comments section to detail a completely different side of their bond with brother Dylan O’Brien. He called him out for his lack of personal support and contact over the past year.

He has publicly stated that Dylan has not spoken to them in over a year, did not check in when they underwent top surgery, and did not even wish them a happy birthday recently.

Commenting on Gay Times' post, they wrote:

“Kinda funny that this article didn’t ask me a single thing about myself? It’s about me and uses my photo. I’m not even tagged.”

In her second comment, they added:

“I’m actually trans masc and go by he/they pronouns.”

He further told the commentators that they are not on speaking terms.

“He also hasn’t spoken to me in over a year. He didn’t check in when I had top surgery. He didn’t even wish me a happy birthday last week! But glad I could deepen his experience in this world and make the world love him that much more.”

Dylan and Julz were born to parents Lisa Rhodes and Patrick B. O’Brien. Both of them worked in the film industry. Lisa was a former actress, known for Running on Empty (1988), Stripped, and Naked Before You, per her IMDb profile, while Patrick worked as a producer and director in films like Battleship (2012), Maze Runner: The Death Cure (2018), and Borderlands (2024).

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Julz recently shared a few pictures from their transformational journey on their Instagram account in April 2025. Many of their fans and supporters cheered him for taking the huge leap.

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