Liam O'Brien
Known for Acting
- Born
- May 28, 1976 (age 50)
- Birthplace
- Belleville, New Jersey, USA
- Also known as
- Liam O'Brian, William Markham
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]
Upcoming
Latest
The Mighty NeinCaleb (voice)2025SeriesRating: 8.1 out of 10
LEGO Marvel Avengers: Strange TailsDoctor Strange / Red Skull (voice)2025SeriesRating: 6.3 out of 10
Critical Role Live: Jester and Fjord's WeddingCaleb Widogast2025Rating: 8.0 out of 10
Critical Role Live: Oaths & AshOrym, of the Air Ashari2025
Critical Role Live: Tag Team at the Teeth – Beyond the ShroudOrym, of the Air Ashari2025
Critical Role Live: Tag Team at the Teeth – The Misty AscentCaleb Widogast2025
Age of UmbraSkreev2025Series
DaggerheartXarlo Grandall2024Series
MOONWARDWalden Orlock2024Series
Critical Role AbridgedOrym, of the Air Ashari2024Series
Critical Role CooldownCreator2024SeriesRating: 9.0 out of 10
LEGO Marvel Avengers: Code RedRed Skull / Hydra Goon 2 (voice)2023Rating: 6.5 out of 10
Candela ObscuraCosmo Grimm, Game Master2023SeriesRating: 7.3 out of 10
Star Wars: Young Jedi AdventuresMaster Estala Maru (voice), Onderrs (voice)2023SeriesRating: 4.6 out of 10
The Legend of Vox MachinaVax'ildan (voice)2022SeriesRating: 8.2 out of 10
Exandria UnlimitedOrym, of the Air Ashari, Erro Mordaurum2021SeriesRating: 4.8 out of 10
Star Wars: The Bad BatchBolo / Captured Falleen / Raney (voice), Bolo / Tactical Droid (voice), Bolo / Scrapper (voice)2021SeriesRating: 8.1 out of 10
DOTA: Dragon's BloodNikdo / Bandit #1 / Bandit #4 (voice)2021SeriesRating: 7.7 out of 10
Crit Recap AnimatedCaleb Widowgast (voice), Orym, of the Air Ashari (voice)2020Series
Carmen Sandiego: To Steal or Not to StealProfessor Maelstrom / Diplomat / Guard 2 (voice)2020Rating: 6.6 out of 10
Known for
Regular ShowTango (voice)2010SeriesRating: 8.6 out of 10
Planet HulkHiroim (voice)2010Rating: 7.1 out of 10- The Legend of Vox MachinaVax'ildan (voice)2022SeriesRating: 8.2 out of 10
- Star Wars: The Bad BatchBolo / Captured Falleen / Raney (voice), Bolo / Tactical Droid (voice), Bolo / Scrapper (voice)2021SeriesRating: 8.1 out of 10
Phineas and FerbRed Skull (voice)2007SeriesRating: 7.9 out of 10
Iron Man & Hulk: Heroes UnitedThe Red Skull (voice)2013Rating: 5.9 out of 10
Star Wars RebelsCommander (voice), Lt. Lyste / Stormtrooper Squad Leader (voice), Lt. Lyste / Morad Sumar (voice)2014SeriesRating: 7.7 out of 10
Wolverine and the X-MenKurt Wagner (voice)2009SeriesRating: 7.6 out of 10
JLA Adventures: Trapped in TimeAquaman / Batwing Computer (voice)2014Rating: 6.6 out of 10
Marvel's AvengersRed Skull / Commuter (voice), Doctor Strange (voice), Red Skull (voice)2013SeriesRating: 7.5 out of 10
Afro Samurai: ResurrectionShichogoro (voice)2009Rating: 6.9 out of 10
Sofia the FirstBoswell (voice)2013SeriesRating: 7.2 out of 10
Filmography
58 titles
2025
The Mighty NeinSeriesCaleb (voice)8 episodes
LEGO Marvel Avengers: Strange TailsSeriesDoctor Strange / Red Skull (voice)1 episode
Critical Role Live: Jester and Fjord's WeddingMovieCaleb Widogast
Critical Role Live: Oaths & AshMovieOrym, of the Air Ashari
Critical Role Live: Tag Team at the Teeth – Beyond the ShroudMovieOrym, of the Air Ashari
Critical Role Live: Tag Team at the Teeth – The Misty AscentMovieCaleb Widogast
Age of UmbraSeriesSkreev8 episodes
Weird KidsSeriesMcTuff (voice)4 episodes
