Liam O'Brien

Personal Info

Known For Acting

Known Credits 45

Gender Male

Birthday May 28, 1976 (48 years old)

Place of Birth Belleville, New Jersey, USA

Also Known As

Liam O'Brian
William Markham
Christopher Liam O'Brien
Liam Christopher O'Brien

Content Score

100

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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

Acting

2025

(1 episode) as Self

2024		MOONWARD (2 episodes) as Self (voice) (4 episodes) as Walden Orlock
2024		Critical Role Cooldown (1 episode) as Vincent Locke (voice) (47 episodes) as Self
2024		Critical Role Abridged (121 episodes) as Orym

2023		LEGO Marvel Avengers: Code Red as Red Skull / Hydra Goon 2 (voice)
2023		Candela Obscura (4 episodes) as Self (3 episodes) as Game Master (3 episodes) as Cosmo Grimm
2023		Star Wars: Young Jedi Adventures (1 episode) as Onderrs (voice) (2 episodes) as Master Estala Maru (voice)
2023		Adventure Never Ends: A Tabletop Saga as Self

2022		Dirty Laundry (1 episode) as Self - Guest
2022		4-Sided Dive (14 episodes) as Self
2022		The Legend of Vox Machina (3 episodes) as Self (36 episodes) as Vax'ildan (voice)

2021		Exandria Unlimited (4 episodes) as Erro Mordaurum (2 episodes) as Self (8 episodes) as Orym
2021		Star Wars: The Bad Batch (1 episode) as Devaronian Captain / Pyke (voice) (1 episode) as Bartender Droid / Stormtrooper #1 / Stormtrooper #3 (voice) (1 episode) as Bolo / Pyke (voice) (2 episodes) as Bolo (voice) (1 episode) as Bolo / Scrapper (voice) (1 episode) as Bolo / Captured Falleen / Raney (voice) (1 episode) as Bolo / Tactical Droid (voice)
2021		DOTA: Dragon's Blood (1 episode) as Nikdo / Bandit #1 / Bandit #4 (voice)

2020		Crit Recap Animated (1 episode) as Orym (voice) (10 episodes) as Caleb Widowgast (voice)
2020		Narrative Telephone (2 episodes) as Self - Storyteller (22 episodes) as Self
2020		Carmen Sandiego: To Steal or Not to Steal as Professor Maelstrom / Diplomat / Guard 2 (voice)
2020		MIDST (1 episode) as Self

2018		Um, Actually... (1 episode) as Self - Contestant
2018		Between the Sheets (1 episode) as Self
2018		LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda as Doctor Strange (voice)

2017

(8 episodes) as Emmett Markham

2016		Ginger & Snapper as Snapper (voice)
2016		Hulk: Where Monsters Dwell as Doctor Strange (voice)

2015		Everstar as Paxley (voice)
2015		CelebriD&D (1 episode) as Vax'ildan
2015		The Phoenix Incident as Jacob Reynolds
2015		Critical Role (1 episode) as Player (1 episode) as Narrator (voice) (1 episode) as Mordred the Gaunt (1 episode) as Yolo (2 episodes) as Game Master (3 episodes) as Xarlo Grandall (1 episode) as Trystan Beasley (1 episode) as Garrett O'Neil (1 episode) as Lucas Dankworth (NerfWormGrim01011) (1 episode) as Forrest Coreman (35 episodes) as Self (1 episode) as Buddy (1 episode) as Snax (1 episode) as Derrig / Vax'ildan Vessar (1 episode) as Septimus Goodfellow (1 episode) as Tomeytine (2 episodes) as Lieve'tel Toluse (1 episode) as Ally (1 episode) as Ringo (1 episode) as Quazirat Tolluz (2 episodes) as Cookie (2 episodes) as Liam O'Brien (1 episode) as Jayne Merriweather (6 episodes) as Dungeon Master (1 episode) as Reverend Forrest Alton (1 episode) as Self / Vax'ildan Vessar (1 episode) as Kurt (145 episodes) as Caleb Widogast (118 episodes) as Vax'ildan Vessar (122 episodes) as Orym

2014		Star Wars Rebels (1 episode) as Deck Officer / Imperial Tech / Lieutenant Lyste (voice) (1 episode) as Lt. Lyste / Morad Sumar (voice) (1 episode) as Lt. Lyste / Stormtrooper Squad Leader (voice) (1 episode) as Commander (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 (voice)

2013		Iron Man & Hulk: Heroes United as The Red Skull (voice)
2013		Phineas and Ferb: Mission Marvel as Red Skull (voice)
2013		Marvel's Avengers (1 episode) as Red Skull / Commuter (voice) (1 episode) as Doctor Strange (voice)

2010		Regular Show (1 episode) 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)

2009		Afro Samurai: Resurrection as Shichogoro (voice)
2009		Wolverine and the X-Men (26 episodes) as Kurt Wagner (voice)

2008

as Self

2007

(1 episode) as Red Skull (voice)

2006

as Ishioka Young Bishop (English version, voice)

2000

(13 episodes) as (voice)

1990

as Rodney Snodgrass

Creator

2024

… Creator

2015

… Creator

Writing

2022

(1 episode) … Writer

Production

2022

(36 episodes) … Executive Producer

Personal Info

Content Score

Liam O'Brien

Biography

Known For

Acting

Creator

Writing

Production

Global

On media pages

On TV season pages

On TV episode pages

On all image pages

On all edit pages

On discussion pages

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