Liam O'Brien

16 credits across 7 shows

Edit this person or suggest a correction — much of this is imported from fan wikis, and imports get things wrong

Credits

2015–2025Critical Role Productions · network · hybrid

Season	Role	Character	System	Provenance
Season 1 — Campaign 1: Vox Machina	player	Vax'ildan	Dungeons & Dragons5th Edition (2014)	community single source
Season 2 — Campaign 2: The Mighty Nein	player	Caleb Widogast	Dungeons & Dragons5th Edition (2014)	reference work ×4 source source source source
Season 3 — Campaign 3: Bells Hells	player	Orym / Caleb / Lieve'tel / Vax	Dungeons & Dragons5th Edition (2014)	community single source
Season 4 — Campaign Four	player	Halandil "Hal" Fang	Dungeons & Dragons5th Edition (2024)	official ×2 source source

2021Critical Role Productions · network · hybrid

Season	Role	Character	System	Provenance
Season 1 — Exandria Unlimited	player		Dungeons & Dragons5th Edition (2014)	reference work ×4 source source source source
Season 4 — Exandria Unlimited Prime	player	Orym of the Air Ashari	Dungeons & Dragons5th Edition (2014)	reference work ×4 source source source source
Season 5 — Exandria Unlimited: Divergence	player	Alex Ward	Dungeons & Dragons5th Edition (2014)	community single source

Critical Role Productions · network · hybrid

Season	Role	System	Provenance
Season 3 — Circle of Tide and Bone	player	Candela ObscuraIlluminated Worlds (1st Edition)	reference work ×2 source source
Season 4 — Circle of the Crimson Mirror	GM/DM	Candela ObscuraIlluminated Worlds (1st Edition)	reference work ×3 source source source
Credited as "Game Master" per the show's own cast table; distinct from Taliesin Jaffe's recurring "Lightkeeper" host/narrator role.
Season 5 — Circle of the Silver Screen	guest player	Candela ObscuraIlluminated Worlds (1st Edition)	reference work ×2 source source
Listed as a guest player for this season; specific episodes not identified.

Nerdist · network, Geek & Sundry · network · video

Season	Role	Character	System	Provenance
Season 1S1E3: CelebriD&D with Game of Thrones' John Bradley (3 August 2017)	guest player	Vax'ildan	Dungeons & Dragons5th Edition (2014)	reference work ×2 source source

Critical Role Productions · network · hybrid

Season	Role	System	Provenance
Season 3 — Age of Umbra	player	Daggerheart1st Edition	community single source
Season 5 — The Re-Slayer's Take	guest player	Dungeons & Dragons5th Edition (2014)	community single source
Listed as a guest player for this season; specific episodes not identified.
Season 8 — Moonward	player	Dungeons & Dragons5th Edition (2014)	community single source

Geek & Sundry · network · video

Season	Role	Character	System	Provenance
Season 1	player		Dungeons & Dragons5th Edition (2014)	reference work single source

Geek & Sundry · network · video

Season	Role	Character	System	Provenance
Season 1	player	Emmett	Dread1st Edition	official ×4 source source source source
IMDb had this filed under the generic "sagas-of-sundry" catch-all, which bundles several distinct one-shots (Dread, Madness, Goblin Mode) under one playlist. Retargeted to the specific one-shot its own cast list names.