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]
Known For
The Legend of Vox Machina
Vax'ildan (voice)
Planet Hulk
Hiroim (voice)
Wolverine and the X-Men
Kurt Wagner (voice)
JLA Adventures: Trapped in Time
Aquaman / Batwing Computer (voice)
Star Wars Rebels: Spark of Rebellion
Yogar Lyste/ Morad Sumar/ Vendor 1
Afro Samurai: Resurrection
Shichogoro (voice)
The Mighty Nein
Caleb (voice)
Phineas and Ferb: Mission Marvel
Red Skull (voice)
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Filmography
Acting (67)
Movies (24)
Critical Role Live: Tag Team at the Teeth – Beyond the Shroud
2025as Orym, of the Air Ashari
Critical Role: Jester and Fjord's Wedding – Live from Radio City Music Hall
2025as Caleb Widogast
Critical Role Live: Tag Team at the Teeth – The Misty Ascent
2025as Caleb Widogast
Critical Role: Oaths & Ash
2025as Orym, of the Air Ashari
Critical Role: The Mighty Nein (Animated Series)
2025as Caleb Widogast
LEGO Marvel Avengers: Code Red
2023as Red Skull / Hydra Goon 2 (voice)
Adventure Never Ends: A Tabletop Saga
2023as Self
Carmen Sandiego: To Steal or Not to Steal
2020as Professor Maelstrom / Diplomat / Guard 2 (voice)
LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda
2018as Doctor Strange (voice)
Ginger & Snapper
2016as Snapper (voice)
Hulk: Where Monsters Dwell
2016as Doctor Strange (voice)
Everstar
2015as Paxley (voice)
The Phoenix Incident
2015as Jacob Reynolds
Iron Man & Captain America: Heroes United
2014as The Red Skull (voice)
JLA Adventures: Trapped in Time
2014as Aquaman / Batwing Computer (voice)
Star Wars Rebels: Spark of Rebellion
2014as Yogar Lyste/ Morad Sumar/ Vendor 1
Phineas and Ferb: Mission Marvel
2013as Red Skull (voice)
Iron Man & Hulk: Heroes United
2013as The Red Skull (voice)
Planet Hulk
2010as Hiroim (voice)
Wolverine and the X-Men: Fate of the Future
2010as Kurt Wagner / Nightcrawler (voice) (archive footage)
Mafia II
2010as Brian O'Neill
Afro Samurai: Resurrection
2009as Shichogoro (voice)
Adventures in Voice Acting
2008as Self
Brave Story
2006as Ishioka Young Bishop (English version, voice)
Television (43)
The Mighty Nein
2025as Caleb (voice)
LEGO Marvel Avengers: Strange Tails
2025as Doctor Strange (voice) / Red Skull (voice)
Weird Kids
2025as Self
Age of Umbra
2025as Skreev
Critical Role Abridged
2024as Orym
Critical Role Cooldown
2024as Self
Critical Role Cooldown
2024as Vincent Locke (voice)
Daggerheart
2024as Xarlo Grandall
Fireside Chat
2024as Self
MOONWARD
2024as Walden Orlock
MOONWARD
2024as Self (voice)
Star Wars: Young Jedi Adventures
2023as Master Estala Maru (voice)
Candela Obscura
2023as Cosmo Grimm
Candela Obscura
2023as Self
The Legend of Vox Machina
2022as Vax'ildan (voice)
The Legend of Vox Machina
2022as Self
Dirty Laundry
2022as Self - Guest
4-Sided Dive
2022as Self
Star Wars: The Bad Batch
2021as Bolo / Captured Falleen / Raney (voice)
DOTA: Dragon's Blood
2021as Nikdo / Bandit #1 / Bandit #4 (voice)
Exandria Unlimited
2021as Orym, of the Air Ashari
Exandria Unlimited
2021as Self
Crit Recap Animated
2020as Caleb Widowgast (voice)
Narrative Telephone
2020as Self
MIDST
2020as Self
Critical Role One-Shots
2019as Tomeytime
Um, Actually...
2018as Self - Contestant
Critical Role: The Mighty Nein
2018as Caleb Widogast
Between the Sheets
2018as Self
Sagas of Sundry
2017as Emmett Markham
Critical Role
2015as Vax'ildan Vessar
Critical Role
2015as Kurt
CelebriD&D
2015as Vax'ildan
Star Wars Rebels
2014as Commander (voice)
Sofia the First
2013as Boswell (voice)
Marvel's Avengers
2013as Red Skull (voice)
Game On!
2012as Self - Guest
Regular Show
2010as Tango (voice)
G.I. Joe: Renegades
2010as Captain Anatoly Krimov/Red Star/German CEO (voice)
Wolverine and the X-Men
2009as Kurt Wagner (voice)
Phineas and Ferb
2007as Red Skull (voice)
Descendants of Darkness
2000as (voice)
The Dragon King
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