Liam O'Brien
Biography
Liam is an American voice actor, writer and voice director in the Los Angeles area. He has been involved in many English-language adaptations of Japanese anime, and is also a regular in numerous video games and cartoons. [wikipedia]
Gallery
Known For
Acting History
2025
The Mighty Nein as Caleb (voice)
2025LEGO Marvel Avengers: Strange Tails as Doctor Strange (voice) / Red Skull (voice)
2025Dispatch as Lightningstruck
2025Critical Role: Jester and Fjord's Wedding – Live from Radio City Music Hall as Caleb Widogast
2025Critical Role: Oaths & Ash as Orym, of the Air Ashari
2025Critical Role Live: Tag Team at the Teeth – Beyond the Shroud as Orym, of the Air Ashari
2025Critical Role Live: Tag Team at the Teeth – The Misty Ascent as Caleb Widogast
2025Age of Umbra as Skreev
2024Daggerheart as Xarlo Grandall
2024MOONWARD as Walden Orlock
2024Fireside Chat as Self
2024Critical Role Abridged as Orym
2024Critical Role Cooldown as Self
2023LEGO Marvel Avengers: Code Red as Red Skull / Hydra Goon 2 (voice)
2023Candela Obscura as Cosmo Grimm
2023Candela Obscura as Game Master
2023Star Wars: Young Jedi Adventures as Master Estala Maru (voice)
2023Star Wars: Young Jedi Adventures as Onderrs (voice)
2023Adventure Never Ends: A Tabletop Saga as Self
2022Dirty Laundry as Self - Guest
20224-Sided Dive as Self
2022The Legend of Vox Machina as Vax'ildan (voice)
2021Exandria Unlimited as Orym, of the Air Ashari
2021Exandria Unlimited as Erro Mordaurum
2021Star Wars: The Bad Batch as Bolo / Captured Falleen / Raney (voice)
2021Star Wars: The Bad Batch as Bolo / Tactical Droid (voice)
2021Star Wars: The Bad Batch as Bolo / Scrapper (voice)
2021Star Wars: The Bad Batch as Bolo (voice)
2021Star Wars: The Bad Batch as Bolo / Pyke (voice)
2021Star Wars: The Bad Batch as Bartender Droid / Stormtrooper #1 / Stormtrooper #3 (voice)
2021Star Wars: The Bad Batch as Devaronian Captain / Pyke (voice)
2021DOTA: Dragon's Blood as Nikdo / Bandit #1 / Bandit #4 (voice)
2020Crit Recap Animated as Orym, of the Air Ashari (voice)
2020Crit Recap Animated as Caleb Widowgast (voice)
2020Narrative Telephone as Self
2020Narrative Telephone as Self - Storyteller
2020Carmen Sandiego: To Steal or Not to Steal as Professor Maelstrom / Diplomat / Guard 2 (voice)
2018Um, Actually... as Self - Contestant
2018Between the Sheets as Self
2018LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda as Doctor Strange (voice)
2018Critical Role: The Mighty Nein as Caleb Widogast
2017Sagas of Sundry as Emmett Markham
2016Ginger & Snapper as Snapper (voice)
2016Hulk: Where Monsters Dwell as Doctor Strange (voice)
2015Everstar as Paxley (voice)
2015CelebriD&D as Vax'ildan
2015The Phoenix Incident as Jacob Reynolds
2015Critical Role as Vax'ildan Vessar
2015Critical Role as Orym, of the Air Ashari
2015Critical Role as Caleb Widogast
2015Critical Role as Halandil "Hal" Fang
2014Star Wars Rebels as Commander (voice)
2014Star Wars Rebels as Lt. Lyste / Stormtrooper Squad Leader (voice)
2014Star Wars Rebels as Lt. Lyste / Morad Sumar (voice)
2014Star Wars Rebels as Deck Officer / Imperial Tech / Lieutenant Lyste (voice)
2014Star Wars Rebels: Spark of Rebellion as Yogar Lyste/ Morad Sumar/ Vendor 1
2014Iron Man & Captain America: Heroes United as The Red Skull (voice)
2014JLA Adventures: Trapped in Time as Aquaman / Batwing Computer (voice)
2013Iron Man & Hulk: Heroes United as The Red Skull (voice)
2013Phineas and Ferb: Mission Marvel as Red Skull (voice)
2013Marvel's Avengers as Red Skull / Commuter (voice)
2013Marvel's Avengers as Doctor Strange (voice)
2013Marvel's Avengers as Red Skull (voice)
2013Sofia the First as Boswell (voice)
2012Game On! as Self - Guest
2010G.I. Joe: Renegades as Captain Anatoly Krimov/Red Star/German CEO (voice)
2010Regular Show as Tango (voice)
2010Planet Hulk as Hiroim (voice)
2010Wolverine and the X-Men: Fate of the Future as Kurt Wagner / Nightcrawler (voice) (archive footage)
2009Afro Samurai: Resurrection as Shichogoro (voice)
2009Wolverine and the X-Men as Kurt Wagner (voice)
2008Adventures in Voice Acting as Self
2007Phineas and Ferb as Red Skull (voice)
2006Brave Story as Ishioka Young Bishop (English version, voice)
2000Descendants of Darkness as (voice)
1990The Spirit of '76 as Rodney Snodgrass
—The Dragon King