Liam O’Brien Bio
Liam Christopher O’Brien (born May 28, 1976) is an American voice actor, writer, and director known for a prolific body of work in anime dubs, video games, and live-action projects. Born in Weehawken, New Jersey, he began acting in high school and later studied at New York University’s Tisch School of the Arts. O’Brien has voiced characters in Naruto (as Gaara), Ergo Proxy, and many other franchise titles, and he has also written and directed for animation and games. A longtime member of the Critical Role cast, he helped establish Critical Role Productions and contributed to the series’ growth into a broader media venture, including animation and fiction publishing, while continuing to lend his voice to dozens of projects worldwide.
Early Life and Background
Liam Christopher O’Brien was born on May 28, 1976, in Weehawken, New Jersey, to parents Lois Wiltse O’Brien and an unnamed father. His mother worked as an educator as well as a quality assurance trainer and consultant. O’Brien has a sister named Cara and is of Irish ancestry. His family were Reformed Christians, and he attended 15 years of Christian schooling before later describing himself as agnostic.
He began acting during his high school years at St. Peter’s Preparatory School in Jersey City, New Jersey. During this formative period, O’Brien resolved to pursue a career in the arts despite understanding the challenging odds of success in the entertainment industry. His early exposure to performance came through school productions and theater, setting the foundation for his future voice acting career.
After completing high school, O’Brien moved to New York City to attend the prestigious New York University Tisch School of the Arts. This formal training in the dramatic arts provided him with essential skills that would later serve him well in voice acting and direction. His education at NYU’s renowned program helped him develop the vocal techniques and acting fundamentals necessary for a professional career in entertainment.
Path to Voice Acting
O’Brien began his professional career in 2001, initially working in theater productions across the United States. His early theatrical work included a production of Shakespeare’s R&J in Cincinnati, Ohio, where he met fellow voice actor Crispin Freeman. This connection proved instrumental in helping O’Brien transition from stage performance to voice-over work in New York.
The September 11 attacks influenced O’Brien’s career trajectory, leading him and his partner to reconsider their future in New York City. Although he enjoyed theater, O’Brien made the decision to pursue voice acting full-time as it offered better opportunities to support his family while maintaining work-life balance. This marked the beginning of his extensive career in anime dubbing and video game voice work.
His early voice acting roles quickly established him as a versatile performer capable of portraying diverse character types. O’Brien developed a reputation for voicing complex characters, particularly those with darker or more psychological dimensions. This versatility allowed him to secure consistent work in both anime adaptations and original English-language animation.
Liam O’Brien Career
Early Career (2001–2005)
O’Brien’s voice acting career took off with roles in numerous English-language adaptations of Japanese anime. He quickly became known for his ability to bring depth to complex characters, earning him roles in prominent series. His early work established him as a reliable voice actor in the anime dubbing industry, leading to increasingly significant opportunities.
During these formative years, O’Brien also began working as an automated dialogue replacement writer for anime productions. This behind-the-scenes work expanded his understanding of the voice acting industry and allowed him to contribute to projects beyond performance. His dual role as both actor and writer demonstrated his versatility and commitment to the craft of voice work.
Breakthrough (2006–Present)
O’Brien achieved widespread recognition for his portrayal of Gaara in the Naruto franchise, including Naruto, Naruto Shippuden, and Boruto. This role became one of his signature performances and introduced him to a massive international audience. His emotionally nuanced portrayal of the complex character showcased his ability to convey vulnerability and intensity through voice alone.
His role as Vincent Law in Ergo Proxy further cemented his reputation as a leading voice actor in anime dubbing. O’Brien continued to build an impressive resume with characters such as Captain Jushiro Ukitake in Bleach, Lloyd in Code Geass, and Kenzo Tenma in Monster. Each role demonstrated his range and ability to adapt to different genres and character archetypes within anime.
In video games, O’Brien voiced Gollum in Middle-earth: Shadow of Mordor and its sequel, bringing the iconic character to life with his distinctive vocal performance. He also portrayed Caius Ballad in Final Fantasy XIII-2 and Lightning Returns: Final Fantasy XIII, War in Darksiders, and Illidan Stormrage in World of Warcraft and Heroes of the Storm. These high-profile game roles expanded his audience beyond anime fans into the broader gaming community.
Notable Works and Milestones
O’Brien joined the cast of Critical Role, a Dungeons & Dragons actual play web series, where he portrays characters including Vax’ildan, Caleb Widogast, Orym, and Halandil Fang. The series became a cultural phenomenon, winning both Webby Awards and Shorty Awards in 2019. Following this success, O’Brien and his fellow cast members established Critical Role Productions and launched a massively successful Kickstarter campaign for The Legend of Vox Machina animated series on Amazon Prime Video. In 2021, he joined the cast of Exandria Unlimited, a Critical Role spinoff. His book Critical Role: Der Katzenprinz & Other Zemnian Tales was released in April 2025, further expanding his contributions to the Critical Role universe.
Liam O’Brien Award Nominations
O’Brien’s work with Critical Role garnered significant recognition, including nominations for prestigious web and digital media awards. In 2019, Critical Role was honored as both a Webby Winner and People’s Voice Winner in the Games category at the Webby Awards. The series also achieved recognition at the Shorty Awards, where it was named a Finalist and received the Audience Honor. These accolades highlighted the impact of O’Brien’s contributions to the actual play phenomenon.
Liam O’Brien Awards Won
Throughout his career, O’Brien has been part of projects that have received critical acclaim and industry recognition. His work on Critical Role contributed to the series winning both the Webby Award and People’s Voice Award in 2019. The show also secured the Audience Honor at the Shorty Awards that same year. These collective achievements reflect the quality and popularity of the projects O’Brien has helped create through his voice acting and collaborative performances.
Liam O’Brien Family
Liam O’Brien married voice actress Amy Kincaid in 2002. The couple have two children together, a daughter and a son. They currently reside in Los Angeles, California, where they have built their family life away from the public eye. O’Brien has maintained a balance between his demanding career and family responsibilities throughout his time in the entertainment industry.
Personal Life
O’Brien lives with hyperacusis, a hearing disorder that causes increased sensitivity to everyday sounds. This condition has influenced his approach to his work and daily life. Despite this challenge, he has continued to maintain an active career in voice acting, directing, and writing. His personal experiences, including his background in a religious household and later identification as agnostic, have informed the depth and complexity he brings to his character portrayals.