Actor / Actress
New Release
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]
Liam O'Brien is known for work in acting across film and television. New Release currently presents 25 verified screen credits connected to this profile.
Selected work includes Tale Gate (2026), The Mighty Nein (2025), LEGO Marvel Avengers: Strange Tails (2025), Weird Kids (2025), MOONWARD (2024), Fireside Chat (2024), Critical Role Abridged (2024), Critical Role Cooldown (2024). The recorded credits span 2009 to 2026, including 8 movies and 17 TV shows.
The filmography below lists available titles, release years and known roles. This profile is updated as additional verified information becomes available.
Profile details
Known forActing
Movies8
TV shows17
Active years represented2009–2026
Place of birthBelleville, New Jersey, USA
Also known as
Liam O'Brian · William Markham · Christopher Liam O'Brien · Liam Christopher O'Brien
Known for
TV ShowTale Gate
TV ShowThe Mighty Nein
TV ShowLEGO Marvel Avengers: Strange Tails
TV ShowWeird Kids
TV ShowMOONWARD
TV ShowFireside Chat
TV ShowCritical Role Abridged
TV ShowCritical Role Cooldown
MovieLEGO Marvel Avengers: Code Red
TV ShowCandela Obscura
TV Show4-Sided Dive
TV ShowThe Legend of Vox Machina
TV ShowNarrative Telephone
MovieCarmen Sandiego: To Steal or Not to Steal
TV ShowCarmen Sandiego
TV ShowAll Work No Play
TV ShowSagas of Sundry
MovieGinger & Snapper
MovieHulk: Where Monsters Dwell
TV ShowCritical Role
MovieIron Man & Hulk: Heroes United
MoviePhineas and Ferb: Mission Marvel
TV ShowGame On!
MoviePlanet Hulk
MovieAfro Samurai: Resurrection