Liam Christopher O'Brien (born May 28, 1976) is an American voice actor, writer, and director. He is a regular cast member of the ''
Dungeons & Dragons
''Dungeons & Dragons'' (commonly abbreviated as ''D&D'' or ''DnD'') is a fantasy tabletop role-playing game (TTRPG) originally created and designed by Gary Gygax and Dave Arneson. The game was first published in 1974 by TSR (company)#Tactical ...
'' actual play series ''
Critical Role,'' playing Vax'ildan ("Vax"), Caleb Widogast, and Orym. He has been involved in many video games, cartoons, and English-language adaptations of Japanese anime. His major anime roles include
Gaara in ''
Naruto
''Naruto'' is a Japanese manga series written and illustrated by Masashi Kishimoto. It tells the story of Naruto Uzumaki, a young ninja who seeks recognition from his peers and dreams of becoming the Hokage, the leader of his village. T ...
'', ''
Naruto Shippuden
''Naruto'' is a Japanese anime television series based on Masashi Kishimoto's 1999–2014 manga series ''Naruto''. It follows Naruto Uzumaki, a young orphan ninja who seeks recognition from his peers and dreams of becoming the Hokage, the l ...
'', and ''
Boruto'', Vincent Law in ''
Ergo Proxy'', Captain
Jushiro Ukitake in ''
Bleach
Bleach is the generic name for any chemical product that is used industrially or domestically to remove color from (i.e. to whiten) fabric or fiber (in a process called bleaching) or to disinfect after cleaning. It often refers specifically t ...
'', Lloyd in ''
Code Geass'',
Kenzo Tenma in ''
Monster
A monster is a type of imaginary or fictional creature found in literature, folklore, mythology, fiction and religion. They are very often depicted as dangerous and aggressive, with a strange or grotesque appearance that causes Anxiety, terror ...
'', Akihiko Sanada in ''
Persona 3
is a 2006 role-playing video game developed by Atlus that is the fourth main installment in the ''Persona (series), Persona'' series, which is part of the larger ''Megami Tensei'' franchise. It was originally released for the PlayStation 2 in ...
'', and Nephrite in the
Viz Media
Viz Media, LLC is an American entertainment company headquartered in San Francisco, California, focused on publishing manga, and distribution and licensing Japanese anime, films, and television series.
The company was founded in 1986 as Viz, ...
dub of ''
Sailor Moon
is a Japanese manga series written and illustrated by Naoko Takeuchi. It was originally serialized in Kodansha's Shōjo manga, ''shōjo'' manga magazine ''Nakayoshi'' from 1991 to 1997; the 60 individual chapters (later reorganized into ...
''.
In cartoons, O'Brien has voiced characters in shows such as ''
Star Wars Rebels'', ''
Transformers: Robots in Disguise'', ''
Avengers Assemble'', ''
Wolverine and the X-Men'', and ''
Hulk and the Agents of S.M.A.S.H.''. In video games, he voiced
Gollum in ''
Middle-earth: Shadow of Mordor'' and
its sequel,
Caius Ballad in ''
Final Fantasy XIII-2'' and ''
Lightning Returns: Final Fantasy XIII'', War in ''
Darksiders'', Asura in ''
Asura's Wrath
is a 2012 Action game, action video game developed by CyberConnect2 and published by Capcom for the PlayStation 3 and Xbox 360. Taking elements from Hindu and Buddhist mythologies and blending them with science fiction, the game follows the titula ...
'',
Ieyasu Tokugawa in ''
Sengoku Basara: Samurai Heroes'',
Illidan Stormrage in ''
World of Warcraft
''World of Warcraft'' (''WoW'') is a 2004 massively multiplayer online role-playing (MMORPG) video game developed and published by Blizzard Entertainment for Windows and Mac OS X. Set in the '' Warcraft'' fantasy universe, ''World of War ...
'' and ''
Heroes of the Storm
''Heroes of the Storm'' is a multiplayer online battle arena video game developed and published by Blizzard Entertainment. Announced at BlizzCon 2010, it was released on June 2, 2015 for macOS and Windows. The game features various crossover ...
'', Yasuo in ''
League of Legends
''League of Legends'' (''LoL'', commonly referred to as ''League'', is a multiplayer online battle arena video game developed and published by Riot Games. Inspired by ''Defense of the Ancients'', a Mod (video games), custom map for ''Warcraf ...
'', Grimoire Weiss in ''
Nier'' and ''
Nier: Replicant ver.1.22474487139...'', the Warden in ''
For Honor'', and Barker in ''
Titanfall 2
''Titanfall 2'' is a 2016 first-person shooter, first-person shooter game developed by Respawn Entertainment and published by Electronic Arts. A sequel to 2014's ''Titanfall (video game), Titanfall'', the game was released worldwide on October ...
''.
He is an
automated dialog replacement writer for anime and has provided voice direction for over 300 episodes of anime such as ''Naruto''. He has also voice directed for video games such as ''
The Last of Us'', ''
Evolve'', ''
Resident Evil 5
''Resident Evil 5'' is a 2009 third-person shooter video game developed and published by Capcom. It is a major installment in the ''Resident Evil'' series, and was released for the PlayStation 3 and Xbox 360 consoles in March 2009 and for Window ...
'', and ''
Resident Evil 6''.
Early life
Liam Christopher O'Brien was born in
Weehawken, New Jersey
Weehawken is a township in the northern part of Hudson County, in the U.S. state of New Jersey. It is located on the Hudson Waterfront and Hudson Palisades overlooking the Hudson River. As of the 2020 United States census, the township's po ...
,
on May 28, 1976. He's of
Irish ancestry His mother, Lois Wiltse O'Brien, worked as an educator as well as a quality assurance trainer and consultant.
He has a sister named Cara.
His family were
Reformed Christians, and he was "raised by a
Christian
A Christian () is a person who follows or adheres to Christianity, a Monotheism, monotheistic Abrahamic religion based on the life and teachings of Jesus in Christianity, Jesus Christ. Christians form the largest religious community in the wo ...
mother and attended 15 years of Christian schooling", but would later describe himself as
agnostic. He began acting in high school at
St. Peter's Preparatory School, resolving to "just be a starving artist" as he knew the chances of success in the field were low. O'Brien moved to
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
to attend the
New York University Tisch School of the Arts
The New York University Tisch School of the Arts (commonly referred to as Tisch) is the performing, cinematic, and media arts school of New York University.
Founded on August 17, 1965, as the School of the Arts at New York University, Tisch ...
.
Career
In his early career, O'Brien worked in theater on various productions around the country.
He met
Crispin Freeman while working on a production of ''
Shakespeare's R&J'' in
Cincinnati, Ohio
Cincinnati ( ; colloquially nicknamed Cincy) is a city in Hamilton County, Ohio, United States, and its county seat. Settled in 1788, the city is located on the northern side of the confluence of the Licking River (Kentucky), Licking and Ohio Ri ...
, which helped him get voice-over work back in New York.
He and his partner decided to leave the city in the aftermath of the
September 11 attacks
The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into ...
and pursued a voice acting career. While he enjoyed theater, he gave up on it as the voice work would better allow him to support and spend time with his family.
O'Brien affirms that he often plays characters that are insane or evil geniuses, although he has also voiced comedic characters such as Fukuyama in ''
Girls Bravo
is a Japanese manga series written and illustrated by and serialized from 2000 to 2005 in '' Shōnen Ace'' by Kadokawa Shoten. The story focuses on a high school boy who is allergic to girls who is transported to a mysterious world with a ...
''. He describes Cumore from ''
Tales of Vesperia
is an action role-playing game developed by Namco Tales Studio. The nineteenth mainline entry in the ''Tales (video game series), Tales'' series, it was released for the Xbox 360 and published in Japan and North America by Namco Bandai Games in ...
'' as "extremely unhinged". In ''
Darksiders'', he voices the lead character War, one of the
Four Horsemen of the Apocalypse. He describes his voicing as deeper than his usual voice, and that he portrayed War as a fairly old soul who isn't surprised at the events around him. In the video game-based film ''
Final Fantasy VII: Advent Children'', he voiced
Red XIII.
In addition to voice acting, he has worked as a voice director and writer on various video games and anime shows.
Critical Role
He is also a cast member of the popular web series ''
Critical Role'', in which he and other voice actors play ''
Dungeons & Dragons
''Dungeons & Dragons'' (commonly abbreviated as ''D&D'' or ''DnD'') is a fantasy tabletop role-playing game (TTRPG) originally created and designed by Gary Gygax and Dave Arneson. The game was first published in 1974 by TSR (company)#Tactical ...
''.
''Critical Role'' was both the Webby Winner and the People's Voice Winner in the "Games (Video Series & Channels)" category at the 2019
Webby Awards
The Webby Awards (colloquially referred to as the Webbys) are awards for excellence on the Internet presented annually by the International Academy of Digital Arts and Sciences, a judging body composed of over three thousand industry experts a ...
;
the show was also both a Finalist and the Audience Honor Winner at the 2019
Shorty Awards. After becoming hugely successful, the ''Critical Role'' cast left the
Geek & Sundry network in early 2019 and set up their own production company,
Critical Role Productions.
Soon after, they aimed to raise $750,000 on
Kickstarter
Kickstarter, PBC is an American Benefit corporation, public benefit corporation based in Brooklyn, New York City, that maintains a global crowdfunding platform focused on creativity. The company's stated mission is to "help bring creative project ...
to create an animated series of their first campaign, but ended up raising over $11 million. In November 2019,
Amazon Prime Video
Amazon Prime Video, known simply as Prime Video, is an American subscription video on-demand over-the-top streaming television service owned by Amazon. The service primarily distributes films and television series produced or co-produced by ...
announced that they had acquired the streaming rights to this animated series, now titled ''
The Legend of Vox Machina'',
O'Brien reprised his role as Vax'ildan. In June 2021, O'Brien was added to the cast of ''
Exandria Unlimited'', a spinoff of ''Critical Role''.
O'Brien is also one of the narrators for the
audiobook
An audiobook (or a talking book) is a recording of a book or other work being read out loud. A reading of the complete text is described as "unabridged", while readings of shorter versions are abridgements.
Spoken audio has been available in sch ...
edition of the novel ''
Critical Role: Vox Machina – Kith & Kin'' (2021).
O'Brien was the author of ''Critical Role: Der Katzenprinz & Other Zemnian Tales'', with illustration by Charlie Borovsky; the in-universe fairy-tale collection was released on April 8, 2025.
Personal life
O'Brien married voice actress Amy Kincaid in 2002.
The couple have two children: a daughter and a son. They live in
Los Angeles
Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
.
He suffers from
hyperacusis
Hyperacusis is an increased Hearing, sensitivity to sound and a low tolerance for environmental noise. Definitions of hyperacusis can vary significantly; it often revolves around damage to or dysfunction of the Stapes, ''stapes'' bone, stapedius ...
, a hearing disorder that makes him unusually sensitive to everyday noises.
Filmography
Anime
Animation
Film
Other dubbing
Video games
Live action
Audio books
References
Further reading
*
*
"Kana's Korner" Interview With Liam O'Brienon 91.8 The Fan
External links
*
*
Liam O'Brienat Crystal Acids Voice Actor Database
*
Between the Sheets: Liam O'Brien– 2018 video interview by ''
Critical Role''
{{DEFAULTSORT:OBrien, Liam
1976 births
21st-century American male actors
Actors from Hudson County, New Jersey
Actual play performers
American agnostics
American former Christians
American male screenwriters
American male television writers
American male video game actors
American male voice actors
American male web series actors
American television writers
American voice directors
Living people
Male actors from New Jersey
People from Weehawken, New Jersey
St. Peter's Preparatory School alumni
Tisch School of the Arts alumni