Oona O’Brien is a 19-year-old American rising actress and model. She became famous as Devon Lee in the hit Netflix series Cobra Kai.
Despite her young age, she has already made a significant impact in the entertainment industry and has captured the attention of audiences worldwide.
Who is Oona O’Brien?
Oona O’Brien is a talented young actress and athlete from Evanston, Illinois, USA. She gained widespread recognition for her portrayal of Devon Lee in the hit Netflix series Cobra Kai.
This role allowed her to show her acting skills and physical abilities. Before her television debut, Oona appeared in commercials for Nickelodeon and American Girl, as well as theater productions.
In addition to her work in the entertainment industry, Oona is an accomplished athlete with a diverse set of skills. She has experience in ice skating, snowboarding, soccer, and martial arts, which were particularly useful in preparing for her role in Cobra Kai.
Oona is also a competitive swimmer, which shows her dedication and excellence in sports. Her athletic background complements her acting and also adds authenticity to her physically demanding roles.
Beyond her acting and athletic pursuits, Oona is active on social media, especially on Instagram, where she engages with her fans and shares glimpses of her personal and professional life. Her talent, charisma, and versatility have made her a rising star in Hollywood.
Oona O’Brien Early Life and Ethnicity
Oona O’Brien was born on September 15, 2006, in the United States. She holds American nationality and has a mixed ethnic background, with her father being of English descent.
Her father, Ed O’Brien, is a renowned guitarist and songwriter. He is best known as a member of the iconic rock band Radiohead.
Ed O’Brien has received widespread recognition for his contributions to music, being named among the greatest guitarists of all time by Rolling Stone in 2010 and 2023.
In 2019, he was inducted into the Rock and Roll Hall of Fame alongside his bandmates from Radiohead. Oona was born while her father was on a six-week tour of America.
Her mother is Susan Kobrin. Together, her parents have supported her in pursuing her career in entertainment. Oona grew up with her older brother, Salvador O’Brien, who was born in January 2004.
She belongs to a family that values creativity and artistic expression. She is likely inherited her love for the arts from her father’s passion for music.
Despite the demands of her father’s career, her upbringing included a blend of cultural influences, given her British-American heritage.
She attend local high school in her hometown and completed her education. Currently, she is pursuing her higher studies and balancing her studies and acting career.
Oona O’Brien Age
Oona O’Brien is 19 years old as of 2026, because she came into the world on September 15, 2006, in the United States. According to her birthday, she falls under the Virgo zodiac sign.
Early Career and Debut
Oona O’Brien began her career in the entertainment industry with a strong passion for acting and modeling. Her debut came in the 2020 short film Sky High.
Though it was a small role, it provided her with an opportunity to show her talent and paved the way for future opportunities.
This early exposure showed her potential and set the stage for her breakthrough in the industry.
Breakthrough Role in Cobra Kai
Oona gained widespread recognition when she joined the cast of Netflix’s acclaimed series Cobra Kai in its fourth season. She portrayed Devon Lee, a determined and competitive fighter with a sharp wit.
This role marked her transition to mainstream television and highlighted her ability to take on complex characters. Despite being new to martial arts, Oona trained extensively to bring authenticity to her performance.
Her dedication earned praise from her co-star Xolo Maridueña, who admired her quick adaptation and skill in martial arts, despite her limited prior experience.
In Cobra Kai, Oona worked with iconic actors such as Ralph Macchio, William Zabka, and Mary Mouser. As part of a diverse and talented ensemble cast, Oona’s portrayal of Devon Lee stood out for its depth and charm.
Her performance not only added a fresh dynamic to the series but also earned her a growing fanbase and critical acclaim.
Expanding Career Prospects
In addition to her acting success, Oona has also pursued opportunities in modeling. The success of Cobra Kai has opened doors for her in television and film, with audiences eagerly anticipating her future projects.
Oona O’Brien’s journey in the entertainment industry is defined by her commitment to excellence and her ability to seamlessly blend acting with athleticism.
With her passion for storytelling and dedication to her craft, she is poised for a bright future. She is continuing to captivate audiences and leave her mark on Hollywood.
Oona O’Brien Movies & TV Shows
Some of Oona O’Brien Movies and TV Shows are mentioned below:
- Cobra Kai
- Sky High
Oona O’Brien Net Worth 2026
Oona O’Brien has an estimated net worth of $500,000 as of 2026. She earns her income primarily through her work as an actress and model.
Her role in Cobra Kai has been a significant source of earnings, as the show’s success on Netflix brought her widespread recognition and lucrative opportunities.
Additionally, her early appearances in commercials and short films contributed to building her portfolio and establishing her career in the entertainment industry.
Apart from acting, Oona likely generates income through brand endorsements and modeling assignments. As her career progresses, she may also explore sponsorship deals, partnerships, and other ventures in the entertainment and fashion sectors.
Oona O’Brien Boyfriend
Oona O’Brien is currently seems to be single and does not have a boyfriend as of 2026. She has not disclosed any details regarding a relationship or dating status.
She choose to keep her personal life private and focus more on her studies or career. This privacy is common among public figures who prefer to maintain a separation between their professional careers and personal affairs.
Oona’s social media presence, particularly on Instagram, focuses primarily on her professional endeavors, including her acting projects and athletic pursuits.
Social Media Appearance
Oona O’Brien maintains an active social media presence, primarily using platforms like Instagram to engage with her fans and share updates about her career.
She often posts about her acting projects, including her role in Cobra Kai, as well as her personal interests, such as fitness and modeling.
Oona O’Brien Height and Weight
Oona O’Brien stands at a height of 5 feet 5 inches which is equal to 165 centimeter or 1.65 meter. She weighs around 50 kilograms which is equal to 110 pounds.
She has a slender and athletic physique, which she maintains through her dedication to fitness and athletic pursuits. Oona’s natural beauty is often highlighted by her radiant smile, striking features, and graceful presence.
Bottom Line
In the Bottom line, Oona O’Brien is a rising star whose talent and dedication have already earned her a place in the entertainment industry.
With her breakout role in Cobra Kai and her expanding career as an actress and model, Oona is quickly becoming a household name.
As she continues to grow both professionally and personally, her fans are sure to see even more of her remarkable work in the future. Oona’s journey is one to watch, and her potential for success is limitless.
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