Taliesin's voice-over career began in the late 1990s anime localisation scene and has expanded into every corner of the industry — AAA video games, animated series, audio drama, and feature film dubs.

Anime Dubbing
Taliesin has lent his voice (and, just as often, his director's ear) to dozens of anime titles over two decades.
- Hellsing Ultimate — Alexander Anderson (FUNimation dub, director/ADR)
- Fullmetal Alchemist: Brotherhood — Various supporting roles
- Gurren Lagann — Viral's squad and others (ADR director)
- Rurouni Kenshin — Supporting voices
- Black Lagoon — Chaka (Roanapur arc)
- Read or Die OVA — Donnie Nakajima
- Haibane Renmei — Director
- Texhnolyze — Director
- The Big O II — Director
Video Games
Since the mid-2000s, Taliesin has been a reliable presence in major video-game voice casts, particularly for CRPGs and MMOs with heavy narrative requirements.
- World of Warcraft — Multiple recurring NPCs across expansions
- Final Fantasy XIV: Heavensward & Shadowbringers — Estinien Wyrmblood
- League of Legends — Kayn, Viego, and other champions
- Kingdoms of Amalur: Reckoning — Various
- Baldur's Gate 3 — Supporting companion voices
- Starcraft II — Mission briefings
- Diablo IV — Select character work

Animation & Live-Action
- The Legend of Vox Machina (Prime Video) — Percy de Rolo
- Mighty Nein animated series (forthcoming) — Caduceus Clay
- Trollhunters: Tales of Arcadia — Guest voices
- Robot Chicken — Various guest voices
- Child's Play 2 (1990) — On-camera child-actor role
- Mr. Mom (1983) — On-camera child-actor role
Actual Play & Audio Drama
- Critical Role (Campaigns 1, 2, 3) — Percy de Rolo, Mollymauk Tealeaf, Caduceus Clay, Ashton Greymoore
- Candela Obscura — Starring cast
- Exandria Unlimited — Various one-shots
Related: ADR directing · Critical Role characters · Biography.