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Liam O'Brien

Biography

Liam O'Brien

Actor Creator Producer Writer

Born
May 28, 1976
Age
50 years old
Place of birth
Belleville, New Jersey, USA
Years active
2000 – present
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53

Credits

19

Movies

30

TV series

26

Years active

7.2

Avg. rating

0

Awards won

The life and career of Liam O'Brien

Our editorial guide is being prepared

An original, in-depth guide to Liam O'Brien is being written and fact-checked. In the meantime, all details, cast and streaming options are listed on this page.

Career timeline

  1. 1976 · Born

    Born in Belleville, New Jersey, USA

  2. 2000 · Screen debut

    Descendants of Darkness (TV)

  3. 2007 · Breakthrough

    Phineas and Ferb (TV)

  4. 2022 · Writing debut

    The Legend of Vox Machina (TV)

  5. 2025 · Latest release

    The Mighty Nein (TV)

Career in numbers

Titles per decade
Most frequent genres
  • Animation31
  • Sci-Fi & Fantasy20
  • Action & Adventure18
  • Science Fiction11
  • Family10
  • Comedy10
Highest-rated title Regular Show 2010 8.6 Most popular title Phineas and Ferb 2007 7.9

Known for

Frequent collaborators

People who appear most often alongside Liam O'Brien in our catalogue.

Filmography

  1. — The Dragon King Upcoming TV
  2. 2025 The Mighty Nein as Caleb (voice) TV
  3. 2025 LEGO Marvel Avengers: Strange Tails as Doctor Strange / Red Skull (voice) TV
  4. 2025 Critical Role Live: Jester and Fjord's Wedding as Caleb Widogast Movie
  5. 2025 Critical Role Live: Oaths & Ash as Orym, of the Air Ashari Movie
  6. 2025 Critical Role Live: Tag Team at the Teeth – Beyond the Shroud as Orym, of the Air Ashari Movie
  7. 2025 Critical Role Live: Tag Team at the Teeth – The Misty Ascent as Caleb Widogast Movie
  8. 2025 Age of Umbra as Skreev TV
  9. 2025 Weird Kids as McTuff (voice) TV
  10. 2024 Daggerheart as Xarlo Grandall TV
  11. 2024 MOONWARD as Walden Orlock TV
  12. 2024 Critical Role Abridged as Orym, of the Air Ashari TV
  13. 2023 LEGO Marvel Avengers: Code Red as Red Skull / Hydra Goon 2 (voice) Movie
  14. 2023 Candela Obscura as Cosmo Grimm TV
  15. 2023 Star Wars: Young Jedi Adventures as Master Estala Maru (voice) TV
  16. 2022 The Legend of Vox Machina as Vax'ildan (voice) TV
  17. 2021 Exandria Unlimited as Orym, of the Air Ashari TV
  18. 2021 Star Wars: The Bad Batch as Bolo / Captured Falleen / Raney (voice) TV
  19. 2021 DOTA: Dragon's Blood as Nikdo / Bandit #1 / Bandit #4 (voice) TV
  20. 2020 Crit Recap Animated as Orym, of the Air Ashari (voice) TV
  21. 2020 Carmen Sandiego: To Steal or Not to Steal as Professor Maelstrom / Diplomat / Guard 2 (voice) Movie
  22. 2019 Carmen Sandiego as Professor Maelstrom / Vlad / Boris / Others (voice) TV
  23. 2018 Um, Actually... as Self - Contestant TV
  24. 2018 LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda as Doctor Strange (voice) Movie
  25. 2017 Sagas of Sundry as Emmett Markham TV
  26. 2016 Ginger & Snapper as Snapper (voice) Movie
  27. 2016 Hulk: Where Monsters Dwell as Doctor Strange (voice) Movie
  28. 2015 Everstar as Paxley (voice) Movie
  29. 2015 CelebriD&D as Vax'ildan TV
  30. 2015 The Phoenix Incident as Jacob Reynolds Movie
  31. 2015 Critical Role as Vax'ildan Vessar TV
  32. 2014 Star Wars Rebels as Deck Officer / Imperial Tech / Lieutenant Lyste (voice) TV
  33. 2014 Star Wars Rebels: Spark of Rebellion as Yogar Lyste/ Morad Sumar/ Vendor 1 Movie
  34. 2014 Iron Man & Captain America: Heroes United as The Red Skull (voice) Movie
  35. 2014 JLA Adventures: Trapped in Time as Aquaman / Batwing Computer (voice) Movie
  36. 2013 Iron Man & Hulk: Heroes United as The Red Skull (voice) Movie
  37. 2013 Phineas and Ferb: Mission Marvel as Red Skull (voice) Movie
  38. 2013 Marvel's Avengers as Red Skull / Commuter (voice) TV
  39. 2013 Sofia the First as Boswell (voice) TV
  40. 2010 G.I. Joe: Renegades as Captain Anatoly Krimov/Red Star/German CEO (voice) TV
  41. 2010 Regular Show as Tango (voice) TV
  42. 2010 Planet Hulk as Hiroim (voice) Movie
  43. 2010 Wolverine and the X-Men: Fate of the Future as Kurt Wagner / Nightcrawler (voice) (archive footage) Movie
  44. 2009 Afro Samurai: Resurrection as Shichogoro (voice) Movie
  45. 2009 Wolverine and the X-Men as Kurt Wagner (voice) TV
  46. 2007 Phineas and Ferb as Red Skull (voice) TV
  47. 2000 Descendants of Darkness as (voice) TV
  1. 2024 Critical Role Cooldown TV
  2. 2018 All Work No Play TV
  3. 2015 Critical Role TV
  1. 2025 The Mighty Nein TV
  2. 2022 The Legend of Vox Machina TV
  1. 2022 The Legend of Vox Machina TV

Quick facts

How old is Liam O'Brien?

Liam O'Brien is 50 years old, born on May 28, 1976.

Where was Liam O'Brien born?

Liam O'Brien was born in Belleville, New Jersey, USA.

What was Liam O'Brien’s first screen role?

The earliest title in our catalogue featuring Liam O'Brien is Descendants of Darkness (2000).

How many movies and series has Liam O'Brien made?

Our catalogue lists 49 titles for Liam O'Brien: 19 movies and 30 TV series.

What is Liam O'Brien’s highest-rated title?

Among titles with enough votes, Regular Show has the highest audience rating, with 8.6/10 on TMDB.

Also born on May 28

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