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

Phineas and Ferb

Red Skull (voice)

Critical Role

Vax'ildan Vessar

Critical Role

Orym

Critical Role

Caleb Widogast

Regular Show

Tango (voice)

Marvel's Avengers

Red Skull / Commuter (voice)

Marvel's Avengers

Doctor Strange (voice)

Star Wars Rebels

Commander (voice)

Filmography

Year	Movie	Role
2025	Critical Role Live: Sydney
2025	Critical Role Live: Melbourne
2025	Critical Role Live: Indianapolis
2025	Critical Role Live: NYC Radio City Music Hall	Caleb Widogast
2023	LEGO Marvel Avengers: Code Red	Red Skull / Hydra Goon 2 (voice)
2023	Adventure Never Ends: A Tabletop Saga	Self
2020	Carmen Sandiego: To Steal or Not to Steal	Professor Maelstrom / Diplomat / Guard 2 (voice)
2018	LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda	Doctor Strange (voice)
2016	Ginger & Snapper	Snapper (voice)
2016	Hulk: Where Monsters Dwell	Doctor Strange (voice)
2015	The Phoenix Incident	Jacob Reynolds
2015	Everstar	Paxley (voice)
2014	Star Wars Rebels: Spark of Rebellion	Yogar Lyste/ Morad Sumar/ Vendor 1
2014	Iron Man & Captain America: Heroes United	The Red Skull (voice)
2014	JLA Adventures: Trapped in Time	Aquaman (voice)
2013	Iron Man & Hulk: Heroes United	The Red Skull (voice)
2013	Phineas and Ferb: Mission Marvel	Red Skull (voice)
2010	Wolverine and the X-Men: Fate of the Future	Kurt Wagner / Nightcrawler (voice) (archive footage)
2010	Planet Hulk	Hiroim (voice)
2009	Afro Samurai: Resurrection	Shichogoro (voice)
2008	Adventures in Voice Acting	Self
2006	Brave Story	Ishioka Young Bishop (English version, voice)
1990	The Spirit of '76	Rodney Snodgrass

Year	TV Show	Role
2025	Age of Umbra
2024	Critical Role Cooldown	Self
2024	Critical Role Abridged	Orym
2024	MOONWARD	Walden Orlock
2023	Star Wars: Young Jedi Adventures	Master Estala Maru (voice)
2023	Candela Obscura	Cosmo Grimm
2023	Candela Obscura	Game Master
2023	Star Wars: Young Jedi Adventures	Onderrs (voice)
2022	The Legend of Vox Machina	Vax'ildan (voice)
2022	Dirty Laundry	Self - Guest
2022	4-Sided Dive	Self
2021	DOTA: Dragon's Blood	Nikdo / Bandit #1 / Bandit #4 (voice)
2021	Star Wars: The Bad Batch	Bolo / Captured Falleen / Raney (voice)
2021	Star Wars: The Bad Batch	Bolo / Tactical Droid (voice)
2021	Star Wars: The Bad Batch	Bolo / Scrapper (voice)
2021	Star Wars: The Bad Batch	Bolo (voice)
2021	Star Wars: The Bad Batch	Bolo / Pyke (voice)
2021	Star Wars: The Bad Batch	Bartender Droid / Stormtrooper #1 / Stormtrooper #3 (voice)
2021	Star Wars: The Bad Batch	Devaronian Captain / Pyke (voice)
2021	Exandria Unlimited	Orym
2021	Exandria Unlimited	Erro Mordaurum
2020	Crit Recap Animated	Orym (voice)
2020	Crit Recap Animated	Caleb Widowgast (voice)
2020	Narrative Telephone	Self
2020	Narrative Telephone	Self - Storyteller
2018	Um, Actually...	Self - Contestant
2018	Between the Sheets	Self
2017	Sagas of Sundry	Emmett Markham
2015	CelebriD&D	Vax'ildan
2015	Critical Role	Vax'ildan Vessar
2015	Critical Role	Orym
2015	Critical Role	Caleb Widogast
2014	Star Wars Rebels	Commander (voice)
2014	Star Wars Rebels	Lt. Lyste / Stormtrooper Squad Leader (voice)
2014	Star Wars Rebels	Lt. Lyste / Morad Sumar (voice)
2014	Star Wars Rebels	Deck Officer / Imperial Tech / Lieutenant Lyste (voice)
2013	Marvel's Avengers	Red Skull / Commuter (voice)
2013	Marvel's Avengers	Doctor Strange (voice)
2010	Regular Show	Tango (voice)
2010	G.I. Joe: Renegades	Captain Anatoly Krimov/Red Star/German CEO (voice)
2009	Wolverine and the X-Men	Kurt Wagner (voice)
2007	Phineas and Ferb	Red Skull (voice)
2000	Descendants of Darkness	(voice)