Liam O'Brien

Liam O'Brien

Acting

Born May 28, 1976 · Belleville, New Jersey, USA

3 films as director · Active 2015–2024

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…

Known for

Phineas and Ferb

Phineas and Ferb

2007

Regular Show

Regular Show

2010

Critical Role

Critical Role

2015

Critical Role

Critical Role

2015

Critical Role

Critical Role

2015

Critical Role

Critical Role

2015

The Legend of Vox Machina

The Legend of Vox Machina

2022

Star Wars Rebels

Star Wars Rebels

2014

Directed(3)

No films found.

Acting(58)

2026Tale GateSelf

2025The Mighty NeinCaleb (voice)

2025LEGO Marvel Avengers: Strange TailsDoctor Strange / Red Skull (voice)

Liam O'Brien — Watchpile | Watchpile

2025Critical Role Live: Jester and Fjord's WeddingCaleb Widogast

2025Critical Role Live: Oaths & AshOrym, of the Air Ashari

2025Critical Role Live: Tag Team at the Teeth – Beyond the ShroudOrym, of the Air Ashari

2025Critical Role Live: Tag Team at the Teeth – The Misty AscentCaleb Widogast

2025Age of UmbraSkreev

2025Weird KidsMcTuff (voice)

2024DaggerheartXarlo Grandall

2024MOONWARDWalden Orlock

2024Fireside ChatSelf

2024Critical Role AbridgedOrym, of the Air Ashari

2024Critical Role CooldownSelf

2023LEGO Marvel Avengers: Code RedRed Skull / Hydra Goon 2 (voice)

2023Candela ObscuraCosmo Grimm

2023Star Wars: Young Jedi AdventuresMaster Estala Maru (voice)

2023Adventure Never Ends: A Tabletop SagaSelf

2022Dirty LaundrySelf - Guest

20224-Sided DiveSelf

2022The Legend of Vox MachinaVax'ildan (voice)

2021Exandria UnlimitedOrym, of the Air Ashari

2021Star Wars: The Bad BatchBolo / Tactical Droid (voice)

2021DOTA: Dragon's BloodNikdo / Bandit #1 / Bandit #4 (voice)

2020Crit Recap AnimatedCaleb Widowgast (voice)

2020Narrative TelephoneSelf

2020Carmen Sandiego: To Steal or Not to StealProfessor Maelstrom / Diplomat / Guard 2 (voice)

2019Carmen SandiegoProfessor Maelstrom / Vlad / Boris / Others (voice)

2018Um, Actually...Self - Contestant

2018Between the SheetsSelf

2018LEGO Marvel Super Heroes: Black Panther - Trouble in WakandaDoctor Strange (voice)

2018Critical Role: The Mighty NeinCaleb Widogast

2017Sagas of SundryEmmett Markham

2016Ginger & SnapperSnapper (voice)

2016Hulk: Where Monsters DwellDoctor Strange (voice)

2015EverstarPaxley (voice)

2015CelebriD&DVax'ildan

2015The Phoenix IncidentJacob Reynolds

2015Critical RoleOrym, of the Air Ashari

2014Star Wars RebelsCommander (voice)

2014Star Wars Rebels: Spark of RebellionYogar Lyste/ Morad Sumar/ Vendor 1

2014Iron Man & Captain America: Heroes UnitedThe Red Skull (voice)

2014JLA Adventures: Trapped in TimeAquaman / Batwing Computer (voice)

2013Iron Man & Hulk: Heroes UnitedThe Red Skull (voice)

2013Phineas and Ferb: Mission MarvelRed Skull (voice)

2013Marvel's AvengersDoctor Strange (voice)

2013Sofia the FirstBoswell (voice)

2012Game On!Self - Guest

2010G.I. Joe: RenegadesCaptain Anatoly Krimov/Red Star/German CEO (voice)

2010Regular ShowTango (voice)

2010Planet HulkHiroim (voice)

2010Wolverine and the X-Men: Fate of the FutureKurt Wagner / Nightcrawler (voice) (archive footage)

2009Afro Samurai: ResurrectionShichogoro (voice)

2009Wolverine and the X-MenKurt Wagner (voice)

2008Adventures in Voice ActingSelf

2007Phineas and FerbRed Skull (voice)

2000Descendants of Darkness(voice)

The Dragon King