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Liam O'Brien
AKA: Liam O'Brian · William Markham · Christopher Liam O'Brien · Liam Christopher O'Brien
Acting
Born: 1976
Belleville, New Jersey, USA
29 Global Credits
🔥 0.6 Popularity
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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
Tale Gate
Self
2026 · US
The Mighty Nein
Caleb (voice)
2025 · US
LEGO Marvel Avengers: Strange Tails
Doctor Strange / Red Skull (voice)
2025 · CA
Age of Umbra
Skreev
2025 · US
Daggerheart
Xarlo Grandall
2024 · US
MOONWARD
Walden Orlock
2024 · US
Fireside Chat
Self
2024 · US
Critical Role Abridged
Orym, of the Air Ashari
2024 · US
Full Credits
| Show / Title | Year | Credit / Role |
|---|---|---|
| Tale Gate | 2026 | Self |
| The Mighty Nein | 2025 | Caleb (voice) |
| The Mighty Nein | 2025 | Executive Producer |
| LEGO Marvel Avengers: Strange Tails | 2025 | Doctor Strange / Red Skull (voice) |
| Age of Umbra | 2025 | Skreev |
| Daggerheart | 2024 | Xarlo Grandall |
| MOONWARD | 2024 | Walden Orlock |
| Fireside Chat | 2024 | Self |
| Critical Role Abridged | 2024 | Orym, of the Air Ashari |
| Critical Role Cooldown | 2024 | Self |
| Candela Obscura | 2023 | Game Master |
| Star Wars: Young Jedi Adventures | 2023 | Master Estala Maru (voice) |
| 4-Sided Dive | 2022 | Self |
| Exandria Unlimited | 2021 | Orym, of the Air Ashari |
| Star Wars: The Bad Batch | 2021 | Bolo (voice) |
| DOTA: Dragon's Blood | 2021 | Nikdo / Bandit #1 / Bandit #4 (voice) |
| Crit Recap Animated | 2020 | Caleb Widowgast (voice) |
| Narrative Telephone | 2020 | Self |
| Um, Actually... | 2018 | Self - Contestant |
| Between the Sheets | 2018 | Self |
| Critical Role: The Mighty Nein | 2018 | Caleb Widogast |
| CelebriD&D | 2015 | Vax'ildan |
| Star Wars Rebels | 2014 | Commander (voice) |
| Marvel's Avengers | 2013 | Red Skull / Commuter (voice) |
| Sofia the First | 2013 | Boswell (voice) |
| G.I. Joe: Renegades | 2010 | Captain Anatoly Krimov/Red Star/German CEO (voice) |
| Regular Show | 2010 | Tango (voice) |
| Phineas and Ferb | 2007 | Red Skull (voice) |
| Descendants of Darkness | 2000 | (voice) |