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