Movies
TV Shows
Actors
Liam O'Brien
May 28, 1976 (49 years old) in Belleville, New Jersey, USA
Known For
Regular Show
Phineas and Ferb
The Legend of Vox Machina
Star Wars Rebels
Star Wars Rebels
Credits
2025 ·
The Mighty Nein
as Caleb (voice)
2025 ·
Critical Role: Jester and Fjord's Wedding – Live from Radio City Music Hall
as Caleb Widogast
2025 ·
Critical Role: Oaths & Ash
as Orym
2025 ·
Critical Role Live: Tag Team at the Teeth – Beyond the Shroud
as Orym
2025 ·
Critical Role Live: Tag Team at the Teeth – The Misty Ascent
as Caleb Widogast
2025 ·
Age of Umbra
as Skreev
2024 ·
Daggerheart
as Xarlo Grandall
2024 ·
MOONWARD
as Walden Orlock
2024 ·
Critical Role Abridged
as Orym
2024 ·
Critical Role Cooldown
as Self
2023 ·
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
2022 ·
Dirty Laundry
as Self - Guest
2022 ·
4-Sided Dive
as Self
2022 ·
The Legend of Vox Machina
as Vax'ildan (voice)
2021 ·
Exandria Unlimited
as Orym
2021 ·
Exandria Unlimited
as Erro Mordaurum
2021 ·
Star Wars: The Bad Batch
as Bolo / Tactical Droid (voice)
2021 ·
Star Wars: The Bad Batch
as Bolo / Captured Falleen / Raney (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)
2020 ·
Crit Recap Animated
as Caleb Widowgast (voice)
2020 ·
Crit Recap Animated
as Orym (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)
2018 ·
Um, Actually...
as Self - Contestant
2018 ·
Between the Sheets
as Self
2018 ·
LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda
as Doctor Strange (voice)
2018 ·
Critical Role: The Mighty Nein
as Caleb Widogast
2017 ·
Sagas of Sundry
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
as Vax'ildan
2015 ·
The Phoenix Incident
as Jacob Reynolds
2015 ·
Critical Role
as Orym
2015 ·
Critical Role
as Vax'ildan Vessar
2015 ·
Critical Role
as Caleb Widogast
2015 ·
Critical Role
as
2014 ·
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 (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
as Doctor Strange (voice)
2013 ·
Marvel's Avengers
as Red Skull / Commuter (voice)
2010 ·
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)
2009 ·
Afro Samurai: Resurrection
as Shichogoro (voice)
2009 ·
Wolverine and the X-Men
as Kurt Wagner (voice)
2008 ·
Adventures in Voice Acting
as Self
2007 ·
Phineas and Ferb
as Red Skull (voice)
2006 ·
Brave Story
as Ishioka Young Bishop (English version, voice)
2000 ·
Descendants of Darkness
as (voice)
1990 ·
The Spirit of '76
as Rodney Snodgrass
2025 ·
The Dragon King
as