Liam O'Brien Photo

Liam O'Brien

Acting

10.9 Popularity May 28, 1976 (49 years old) Belleville, New Jersey, USA

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]

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Known For

Regular Show
Regular Show
2010 as Tango (voice)
Phineas and Ferb
Phineas and Ferb
2007 as Red Skull (voice)
The Legend of Vox Machina
The Legend of Vox Machina
2022 as Vax'ildan (voice)
Star Wars Rebels
Star Wars Rebels
2014 as Commander (voice)
Star Wars Rebels
Star Wars Rebels
2014 as Lt. Lyste / Stormtrooper Squad Leader (voice)
Star Wars Rebels
Star Wars Rebels
2014 as Lt. Lyste / Morad Sumar (voice)
Iron Man & Captain America: Heroes United
Iron Man & Captain America: Heroes United
2014 as The Red Skull (voice)
Planet Hulk
Planet Hulk
2010 as Hiroim (voice)

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]

Filmography 76

2025
The Mighty Nein TV

as Caleb Widogast (voice)

2025
The Mighty Nein TV

Executive Producer

2025
Critical Role Live: NYC Radio City Music Hall Movie

as Caleb Widogast

2025
Critical Role: Oaths & Ash Movie

as Orym

2025
Critical Role Live: Tag Team at the Teeth – Beyond the Shroud Movie

as Orym

2025
Critical Role Live: Tag Team at the Teeth – The Misty Ascent Movie

as Caleb Widogast

2025
Age of Umbra TV

as Skreev

2024
Daggerheart TV

as Xarlo Grandall

2024
MOONWARD TV

as Walden Orlock

2024
Critical Role Cooldown TV

as Self

2024
Critical Role Abridged TV

as Orym

2024
Critical Role Cooldown TV

Creator

2023
LEGO Marvel Avengers: Code Red Movie

as Red Skull / Hydra Goon 2 (voice)

2023
Candela Obscura TV

as Cosmo Grimm

2023
Candela Obscura TV

as Game Master

2023
Star Wars: Young Jedi Adventures TV

as Master Estala Maru (voice)

2023
Star Wars: Young Jedi Adventures TV

as Onderrs (voice)

2023
Adventure Never Ends: A Tabletop Saga Movie

as Self

2022
Dirty Laundry TV

as Self - Guest

2022
4-Sided Dive TV

as Self

Photos 1

Liam O'Brien Photo

Personal Details

Known For Acting
Gender Not specified
Birthday May 28, 1976 (49 years old)
Place of Birth Belleville, New Jersey, USA
Also Known As Liam O'Brian, William Markham, Christopher Liam O'Brien and 1 more
Years Active 1990 - 2025
Popularity 10.9
Social Links
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Career Stats
76 Total Credits
23 Movie Roles
47 TV Roles
1 Photos