Liam O'Brien
Known for Acting · 58 credits
- Born
- 1976-05-28 (age 50)
- Place of birth
- Belleville, New Jersey, USA
- Also known as
- Liam O'Brian · William Markham · Christopher Liam O'Brien · Liam Christopher 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
Regular Show
2010
as Tango (voice)
Phineas and Ferb
2007
as Red Skull (voice)
The Legend of Vox Machina
2022
as Vax'ildan (voice)
Star Wars Rebels
2014
as Commander (voice) / Lt. Lyste / Stormtrooper Squad Leader (voice) / Lt. Lyste / Morad Sumar (voice) / Deck Officer / Imperial Tech / Lieutenant Lyste (voice)
Critical Role
2015
as Vax'ildan Vessar / Orym, of the Air Ashari / Caleb Widogast / Halandil "Hal" Fang
Marvel's Avengers
2013
as Red Skull / Commuter (voice) / Doctor Strange (voice) / Red Skull (voice)
TV Shows (37)
Regular Show
2010
as Tango (voice)
Phineas and Ferb
2007
as Red Skull (voice)
The Legend of Vox Machina
2022
as Vax'ildan (voice)
Star Wars Rebels
2014
as Commander (voice) / Lt. Lyste / Stormtrooper Squad Leader (voice) / Lt. Lyste / Morad Sumar (voice) / Deck Officer / Imperial Tech / Lieutenant Lyste (voice)
Critical Role
2015
as Vax'ildan Vessar / Orym, of the Air Ashari / Caleb Widogast / Halandil "Hal" Fang
Marvel's Avengers
2013
as Red Skull / Commuter (voice) / Doctor Strange (voice) / Red Skull (voice)
Sofia the First
2013
as Boswell (voice)
Star Wars: The Bad Batch
2021
as Bolo / Captured Falleen / Raney (voice) / Bolo / Tactical Droid (voice) / Bolo / Scrapper (voice) / Bolo (voice) / Bolo / Pyke (voice) / Bartender Droid / Stormtrooper #1 / Stormtrooper #3 (voice) / Devaronian Captain / Pyke (voice)
Star Wars: Young Jedi Adventures
2023
as Master Estala Maru (voice) / Onderrs (voice)
DOTA: Dragon's Blood
2021
as Nikdo / Bandit #1 / Bandit #4 (voice)
Um, Actually...
2018
as Self - Contestant
The Mighty Nein
2025
as Caleb (voice)
G.I. Joe: Renegades
2010
as Captain Anatoly Krimov/Red Star/German CEO (voice)
Critical Role Abridged
2024
as Orym, of the Air Ashari
Dirty Laundry
2022
as Self - Guest
Critical Role Cooldown
2024
as Self
Descendants of Darkness
2000
as (voice)
Candela Obscura
2023
as Cosmo Grimm / Game Master
Narrative Telephone
2020
as Self / Self - Storyteller
Wolverine and the X-Men
2009
as Kurt Wagner (voice)
Critical Role: The Mighty Nein
2018
as Caleb Widogast
Weird Kids
2025
as McTuff (voice)
Exandria Unlimited
2021
as Orym, of the Air Ashari / Erro Mordaurum
4-Sided Dive
2022
as Self
CelebriD&D
2015
as Vax'ildan
LEGO Marvel Avengers: Strange Tails
2025
as Doctor Strange / Red Skull (voice)
Crit Recap Animated
2020
as Orym, of the Air Ashari (voice) / Caleb Widowgast (voice)
Sagas of Sundry
2017
as Emmett Markham
Daggerheart
2024
as Xarlo Grandall
Age of Umbra
2025
as Skreev
Between the Sheets
2018
as Self
Fireside Chat
2024
as Self
Dispatch
2025
as Kellen Sebastian / Lightningstruck
The Dragon King
Tale Gate
2026
as Self
Game On!
2012
as Self - Guest
MOONWARD
2024
as Walden Orlock
Movies (21)
Afro Samurai: Resurrection
2009
as Shichogoro (voice)
Planet Hulk
2010
as Hiroim (voice)
Phineas and Ferb: Mission Marvel
2013
as Red Skull (voice)
Iron Man & Captain America: Heroes United
2014
as The Red Skull (voice)
JLA Adventures: Trapped in Time
2014
as Aquaman / Batwing Computer (voice)
LEGO Marvel Avengers: Code Red
2023
as Red Skull / Hydra Goon 2 (voice)
Star Wars Rebels: Spark of Rebellion
2014
as Yogar Lyste/ Morad Sumar/ Vendor 1
Iron Man & Hulk: Heroes United
2013
as The Red Skull (voice)
Hulk: Where Monsters Dwell
2016
as Doctor Strange (voice)
LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda
2018
as Doctor Strange (voice)
Carmen Sandiego: To Steal or Not to Steal
2020
as Professor Maelstrom / Diplomat / Guard 2 (voice)
Wolverine and the X-Men: Fate of the Future
2010
as Kurt Wagner / Nightcrawler (voice) (archive footage)
Everstar
2015
as Paxley (voice)
Critical Role Live: Tag Team at the Teeth – Beyond the Shroud
2025
as Orym, of the Air Ashari
The Phoenix Incident
2015
as Jacob Reynolds
Adventures in Voice Acting
2008
as Self
Critical Role Live: Oaths & Ash
2025
as Orym, of the Air Ashari
Critical Role Live: Jester and Fjord's Wedding
2025
as Caleb Widogast
Adventure Never Ends: A Tabletop Saga
2023
as Self
Critical Role Live: Tag Team at the Teeth – The Misty Ascent
2025
as Caleb Widogast
Ginger & Snapper
2016
as Snapper (voice)
About Liam O'Brien
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] With 58 credits spanning from 2000 to 2026, Liam O'Brien has appeared in 21 films and 37 TV shows.
Fans searching for Liam O'Brien movies, Liam O'Brien filmography, or the latest projects starring Liam O'Brien can stream many of these titles on CineFlixo, free and in HD, with no subscription required.
Most Popular Liam O'Brien Movies
- Afro Samurai: Resurrection (2009) — as Shichogoro (voice)
- Planet Hulk (2010) — as Hiroim (voice)
- Phineas and Ferb: Mission Marvel (2013) — as Red Skull (voice)
- Iron Man & Captain America: Heroes United (2014) — as The Red Skull (voice)
- JLA Adventures: Trapped in Time (2014) — as Aquaman / Batwing Computer (voice)
Where to Watch Liam O'Brien Films
Most Liam O'Brien movies and series are available to stream on CineFlixo in full HD, completely free and without signup. Browse the complete filmography above to jump directly to any title. For more films and the latest web series featuring Liam O'Brien, check our movies catalogue and browse page.