Liam O'Brien

Regular Show

2010 · ★ 8.6 · Tango (voice)

Phineas and Ferb

2007 · ★ 7.9 · Red Skull (voice)

Critical Role

2015 · Vax'ildan Vessar, Caleb Widogast

The Legend of Vox Machina

2022 · ★ 8.2 · Vax'ildan (voice), Executive Producer

Star Wars Rebels

2014 · ★ 7.7 · Commander (voice), Lt. Lyste / Stormtrooper Squad Leader (voice)

Sofia the First

2013 · ★ 7.2 · Boswell (voice)

Star Wars: The Bad Batch

2021 · ★ 8.2 · Bolo / Captured Falleen / Raney (voice), Bolo / Tactical Droid (voice)

WIRED's Autocomplete Interviews

2016 · Self - Guest

Marvel's Avengers

2013 · ★ 7.5 · Red Skull / Commuter (voice), Doctor Strange (voice)

Star Wars: Young Jedi Adventures

2023 · Master Estala Maru (voice), Onderrs (voice)

DOTA: Dragon's Blood

2021 · ★ 7.7 · Nikdo / Bandit #1 / Bandit #4 (voice)

The Mighty Nein

2025 · ★ 8.2 · Caleb (voice), Executive Producer

Critical Role Cooldown

2024 · Self, Creator

Critical Role: The Mighty Nein

2018 · Caleb Widogast, Creator

Um, Actually...

2018 · Self - Contestant

Carmen Sandiego

2019 · ★ 7.9 · Professor Maelstrom / Vlad / Boris / Others (voice)

Critical Role Abridged

2024 · Orym, of the Air Ashari

G.I. Joe: Renegades

2010 · Captain Anatoly Krimov/Red Star/German CEO (voice)

Daggerheart

2024 · Xarlo Grandall

LEGO Marvel Avengers: Strange Tails

2025 · Doctor Strange / Red Skull (voice)

Dirty Laundry

2022 · Self - Guest

Narrative Telephone

2020 · Self, Self - Storyteller

Planet Hulk

2010 · ★ 7.1 · Hiroim (voice)

4-Sided Dive

2022 · Self

Phineas and Ferb: Mission Marvel

2013 · ★ 6.6 · Red Skull (voice)

Exandria Unlimited

2021 · Orym, of the Air Ashari, Erro Mordaurum

Age of Umbra

2025 · Skreev

Iron Man & Hulk: Heroes United

2013 · ★ 6.0 · The Red Skull (voice)

Descendants of Darkness

2000 · (voice)

LEGO Marvel Avengers: Code Red

2023 · ★ 6.5 · Red Skull / Hydra Goon 2 (voice)

Weird Kids

2025 · McTuff (voice)

Wolverine and the X-Men

2009 · ★ 7.5 · Kurt Wagner (voice)

Fireside Chat

2024 · Self

Iron Man & Captain America: Heroes United

2014 · ★ 6.5 · The Red Skull (voice)

Candela Obscura

2023 · Cosmo Grimm, Game Master

JLA Adventures: Trapped in Time

2014 · ★ 6.6 · Aquaman / Batwing Computer (voice)

Afro Samurai: Resurrection

2009 · ★ 6.9 · Shichogoro (voice)

Hulk: Where Monsters Dwell

2016 · ★ 6.7 · Doctor Strange (voice)

Critical Role Live: Oaths & Ash

2025 · Orym, of the Air Ashari

Game On!

2012 · Self - Guest

CelebriD&D

2015 · Vax'ildan

Ginger & Snapper

2016 · Snapper (voice)

Crit Recap Animated

2020 · Caleb Widowgast (voice), Orym, of the Air Ashari (voice)

Sagas of Sundry

2017 · Emmett Markham

Between the Sheets

2018 · Self

Star Wars Rebels: Spark of Rebellion

2014 · ★ 7.3 · Yogar Lyste/ Morad Sumar/ Vendor 1

The Dragon King

Tale Gate

2026 · Self

LEGO Marvel Super Heroes: Black Panther - Trouble in Wakanda

2018 · ★ 6.0 · Doctor Strange (voice)

MOONWARD

2024 · Walden Orlock

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

2025 · Caleb Widogast

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

2025 · Orym, of the Air Ashari

Carmen Sandiego: To Steal or Not to Steal

2020 · Professor Maelstrom / Diplomat / Guard 2 (voice)

Adventures in Voice Acting

2008 · Self

The Phoenix Incident

2015 · ★ 5.1 · Jacob Reynolds

Critical Role Live: Jester and Fjord's Wedding

2025 · Caleb Widogast

Wolverine and the X-Men: Fate of the Future

2010 · Kurt Wagner / Nightcrawler (voice) (archive footage)

Adventure Never Ends: A Tabletop Saga

2023 · Self

Everstar

2015 · Paxley (voice)