Acting

Liam O'Brien

Born 1976-05-28 · Belleville, New Jersey, USA

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]

Credits

Newest first

Tale Gate
as Self
2026
The Mighty Nein
as Caleb (voice)
2025
The Mighty Nein
Executive Producer
2025
LEGO Marvel Avengers: Strange Tails
as Doctor Strange / Red Skull (voice)
2025
Critical Role Live: Jester and Fjord's Wedding
as Caleb Widogast
2025
Critical Role Live: Oaths & Ash
as Orym, of the Air Ashari
2025
Critical Role Live: Tag Team at the Teeth – Beyond the Shroud
as Orym, of the Air Ashari
2025
Critical Role Live: Tag Team at the Teeth – The Misty Ascent
as Caleb Widogast
2025
Age of Umbra
as Skreev
2025
Weird Kids
as McTuff (voice)
2025
Daggerheart
as Xarlo Grandall
2024
MOONWARD
as Walden Orlock
2024
Fireside Chat
as Self
2024
Critical Role Cooldown
as Self
2024
Critical Role Abridged
as Orym, of the Air Ashari
2024
Critical Role Cooldown
Creator
2024
LEGO Marvel Avengers: Code Red
as Red Skull / Hydra Goon 2 (voice)
2023
Candela Obscura
as Cosmo Grimm
2023
Candela Obscura
as Game Master
2023
Star Wars: Young Jedi Adventures
as Master Estala Maru (voice)
2023
Star Wars: Young Jedi Adventures
as Onderrs (voice)
2023
Adventure Never Ends: A Tabletop Saga
as Self
2023
Dirty Laundry
as Self - Guest
2022
4-Sided Dive
as Self
2022
The Legend of Vox Machina
as Vax'ildan (voice)
2022
The Legend of Vox Machina
Executive Producer
2022
The Legend of Vox Machina
Writer
2022
Exandria Unlimited
as Orym, of the Air Ashari
2021
Exandria Unlimited
as Erro Mordaurum
2021
Star Wars: The Bad Batch
as Bolo / Captured Falleen / Raney (voice)
2021
Star Wars: The Bad Batch
as Bolo / Tactical Droid (voice)
2021
Star Wars: The Bad Batch
as Bolo / Scrapper (voice)
2021
Star Wars: The Bad Batch
as Bolo (voice)
2021
Star Wars: The Bad Batch
as Bolo / Pyke (voice)
2021
Star Wars: The Bad Batch
as Bartender Droid / Stormtrooper #1 / Stormtrooper #3 (voice)
2021
Star Wars: The Bad Batch
as Devaronian Captain / Pyke (voice)
2021
DOTA: Dragon's Blood
as Nikdo / Bandit #1 / Bandit #4 (voice)
2021
Crit Recap Animated
as Orym, of the Air Ashari (voice)
2020
Crit Recap Animated
as Caleb Widowgast (voice)
2020
Narrative Telephone
as Self
2020
Narrative Telephone
as Self - Storyteller
2020
Carmen Sandiego: To Steal or Not to Steal
as Professor Maelstrom / Diplomat / Guard 2 (voice)
2020
Carmen Sandiego
as Professor Maelstrom / Vlad / Boris / Others (voice)
2019
Um, Actually...
as Self - Contestant
2018
Between the Sheets
as Self
2018
Between the Sheets - Critical Role
as Self
2018
LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda
as Doctor Strange (voice)
2018
Sagas of Sundry
as Emmett Markham
2017
Ginger & Snapper
as Snapper (voice)
2016
Hulk: Where Monsters Dwell
as Doctor Strange (voice)
2016
Everstar
as Paxley (voice)
2015
CelebriD&D
as Vax'ildan
2015
The Phoenix Incident
as Jacob Reynolds
2015
Critical Role
as Vax'ildan Vessar
2015
Critical Role
as Orym, of the Air Ashari
2015
Critical Role
as Caleb Widogast
2015
Critical Role
as Halandil "Hal" Fang
2015
Critical Role
Creator
2015
Star Wars Rebels
as Commander (voice)
2014
Star Wars Rebels
as Lt. Lyste / Stormtrooper Squad Leader (voice)
2014
Star Wars Rebels
as Lt. Lyste / Morad Sumar (voice)
2014
Star Wars Rebels
as Deck Officer / Imperial Tech / Lieutenant Lyste (voice)
2014
Star Wars Rebels: Spark of Rebellion
as Yogar Lyste/ Morad Sumar/ Vendor 1
2014
Iron Man & Captain America: Heroes United
as The Red Skull (voice)
2014
JLA Adventures: Trapped in Time
as Aquaman / Batwing Computer (voice)
2014
Iron Man & Hulk: Heroes United
as The Red Skull (voice)
2013
Phineas and Ferb: Mission Marvel
as Red Skull (voice)
2013
Marvel's Avengers
as Red Skull / Commuter (voice)
2013
Marvel's Avengers
as Doctor Strange (voice)
2013
Marvel's Avengers
as Red Skull (voice)
2013
Sofia the First
as Boswell (voice)
2013
Game On!
as Self - Guest
2012
G.I. Joe: Renegades
as Captain Anatoly Krimov/Red Star/German CEO (voice)
2010
Regular Show
as Tango (voice)
2010
Planet Hulk
as Hiroim (voice)
2010
Wolverine and the X-Men: Fate of the Future
as Kurt Wagner / Nightcrawler (voice) (archive footage)
2010
Afro Samurai: Resurrection
as Shichogoro (voice)
2009
Wolverine and the X-Men
as Kurt Wagner (voice)
2009
Adventures in Voice Acting
as Self
2008
Phineas and Ferb
as Red Skull (voice)
2007