Julz O’Brien Biography: Girlfriend, Height, Age, Parents, Net Worth, Siblings, TV Series  

Julia O’Brien, known as Julz O’Brien, is the elder sibling of American actor Dylan O’Brien, recognized for his roles in Teen Wolf and The Maze Runner series.

Identifying as trans-masculine and using he/they pronouns, Julz has gained public attention through their social media presence, where they share their journey of gender identity and personal experiences.

While not a public figure in a professional capacity, Julz’s connection to Dylan and their candid discussions about their life have made them a notable figure in conversations about trans representation and family dynamics in the public eye.

Profile

• Full Name: Julia O’Brien
• Stage Name: Julz O’Brien
• Born: 17, April 1990
• Age: 35 years old
• Birthplace: New York City, New York
• Nationality: American
• Occupation: Social Media Personality
• Height: Unknown
• Parents: Lisa Rhodes O’Brien, Patrick B. O’Brien
• Siblings: Dylan Rhodes O’Brien
• Spouse: None
• Partner: None
• Children: None
• Relationship: Single
• Net Worth: Unknown

Early Life and Education

Julia O’Brien, known as Julz O’Brien, was born on April 17, 1990, in New York City, New York. Raised by their parents, Lisa Rhodes O’Brien, a former actress and acting school owner, and Patrick B. O’Brien, a camera operator and producer,

Julz grew up alongside their younger brother, Dylan, in Springfield Township, New Jersey, before the family relocated to Hermosa Beach, California, when Julz was about 13.

Details about their educational background, including specific schools or degrees, are not publicly documented. Julz’s ethnicity is a mix of Irish descent from their father and English, Spanish, and Italian ancestry from their mother, and their religion is unknown.

Career

Julz O’Brien has not followed a high-profile professional career path but has built a modest presence as a social media personality, primarily on Instagram. Their public recognition mainly stems from their familial connections, which have significantly contributed to their online visibility.

About their brother, Dylan Rhodes O’Brien launched his entertainment career as a teenager by uploading comedic videos to his YouTube channel, moviekidd826, at the age of 14.

His creative content caught the attention of a local producer in California, leading to his on-screen debut in the short-form series Sweety High in 2010. O’Brien’s breakthrough came in 2011 when he was cast as Stiles Stilinski in MTV’s Teen Wolf, a role that spanned six seasons until 2017.

His standout comedic timing and emotional nuance in the series earned him widespread critical acclaim and three Teen Choice Awards, establishing him as a fan favourite. During breaks from Teen Wolf, O’Brien explored film roles in The First Time (2012) and The Internship (2013), where he demonstrated range beyond his television roots.

His most defining role to date came as Thomas in The Maze Runner trilogy (2014–2018), a high-stakes dystopian franchise that grossed over $660 million globally. While filming the final installment, Maze Runner: The Death Cure, O’Brien suffered a life-threatening injury in 2016, leading to a temporary halt in production and a period of recovery.

Despite the setback, his performance in the franchise earned him accolades, including the 2016 MTV Movie Award for Best Hero and a Teen Choice Award for Choice Movie Actor.

Following his recovery, O’Brien continued to diversify his filmography with performances in the action-thriller American Assassin (2017), a cameo in Bumblebee (2018), and a praised supporting role in the 2024 queer indie drama Ponyboi, where he delivered a performance noted for its emotional complexity and depth.

In recent years, O’Brien has taken on both independent and commercial film opportunities, with notable performances in Caddo Lake (2024) and the highly anticipated Twinless (2025), further solidifying his ability to straddle genres and platforms.

His growing list of accolades, including multiple MTV Movie Awards and being named one of Yahoo! Movies’ 15 Breakout Stars of 2014, speaks to his lasting impact and audience appeal.

Beyond the screen, O’Brien has leveraged his platform to advocate for increased representation and inclusivity in Hollywood, often guided by personal convictions and connections that inform his choices of projects.

His thoughtful approach to both acting and activism continues to solidify his reputation as a versatile, socially conscious, and enduring figure in the entertainment industry.

Social Media

• Instagram Handle: @julzbob417

Personal Life

Julia O’Brien has kept much of their personal life private, with their romantic history and current status drawing particular attention due to their public comments about family dynamics.

Julz is single, with no publicly documented past or present romantic partners, spouses, or children. Their most notable personal narrative centers on their relationship with their brother, Dylan O’Brien.

In earlier years, Julz shared warm tributes, such as a 2019 Instagram post celebrating Dylan’s birthday and a 2021 video of them playing catch for National Siblings Day, indicating a once-close bond. However, in May 2025, Julz revealed a significant rift, stating on Instagram that Dylan had not contacted them for over a year,l.

This public disclosure, prompted by a Gay Times post about Dylan’s comments on their trans identity, highlighted tensions and Julz’s frustration at being misgendered as non-binary rather than trans-masculine.

Julz’s life in California remains focused on personal growth and sharing their trans journey, often with their pets and family memories, despite the estrangement from Dylan.

Net Worth

Julz O’Brien’s net worth is not publicly documented, as they have not pursued a professional career that generates significant reported income. Their social media presence may yield modest earnings, but no specific figures are available.

In contrast, Dylan O’Brien has an estimated net worth of $7 million, amassed through his successful acting career, which includes significant roles in The Maze Runner trilogy, Teen Wolf, and films such as Ponyboi and Caddo Lake. His income from acting, endorsements, and appearances has provided financial stability, though Julz’s financial status remains private.