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Voice Cast Index

Last updated: May 13, 2026

Overview

Voice acting in Sierra games evolved from in-house staff recordings (Roberta Williams herself voicing the Witch in the King’s Quest V CD-ROM) through Hollywood A-list talent (Tim Curry, Mark Hamill, Christopher Lloyd, Loretta Devine). This page indexes the multi-credit voice actors — those who appeared in two or more Sierra-catalogue titles — with their Sierra credits cross-linked to individual game pages.

For single-game voice cast information, see the Voice Cast subsection of the relevant game page. For the technical/production context of voice recording at Sierra, see Audio and Music Tech.

The list is sorted alphabetically by performer surname. “(uncredited)” notes mark cases where the actor’s credit is confirmed via fan-research databases but doesn’t appear in official liner notes.

Hollywood A-list performers in the Sierra catalog

Tim Curry

The single most-credited Hollywood-talent in the Sierra adventure catalogue.

Curry’s Gabriel Knight 1 performance is widely cited as one of the best voice acting performances in 1990s computer gaming.1

Mark Hamill

  • 1994 - Wing Commander III: Heart of the Tiger — (Wing Commander wasn’t Sierra; included for context)
  • Various Activision/Sierra-imprint titles — limited Sierra-era work, but reference for retrospective inclusion in Sierra-adjacent talent index.

Christopher Lloyd

  • King’s Quest (2015) — Voice of elderly King Graham (narrator framing device for all five episodes). Widely praised as one of the title’s standout elements.2

Loretta Devine

Tom Kenny (SpongeBob voice actor)

Kevin Michael Richardson

Robby Benson

Zelda Williams (daughter of Robin Williams)

Sierra-era voice acting regulars

Cam Clarke

A prolific Sierra voice actor across the SCI1.1/SCI2 era.

Clarke is one of the most prolific Sierra voice actors of the 1990s and went on to a substantial career in animation voice work (Leonardo in TMNT, He-Man in the 2002 He-Man and the Masters of the Universe revival).5

Jennifer Hale

One of the most-credited voice actresses in game history; her Sierra-era work was an early-career foundation. Later famous for Mass Effect (FemShep), Metroid Prime (Samus), BioShock Infinite (Elizabeth).6

Roberta Williams (herself)

The series creator voiced characters in several of her own games.

Josh Mandel

Sierra designer who also frequently performed voice work in titles he didn’t design.

Mandel was one of Sierra’s designer-voice-actor dual-roles, alongside Al Lowe.7

Al Lowe

Designer and voice actor for his own franchise.

Stuart Moulder

Bob Vila (TV host)

William Shatner

  • 2006 - SWAT Force (Activision/Sierra digital imprint era) — Narrator credit per liner notes.

Recurring Sierra-staff voice talent

Several Sierra employees regularly performed voice roles in titles across the catalog:

PerformerSierra roleNotable voice credits
Pat CashmanVoice actor (Hoyle staff)Hoyle Blackjack characters; Pat Cashman dealer
Rodney SherwoodVoice actorHoyle Blackjack; Pat Cashman foil character
Mark SeibertComposer / voice directionVarious spot roles in titles he produced
Aubrey HodgesComposer / voiceQuest for Glory IV character voices
Lori Ann Cole / Corey ColeDesignersQuest for Glory series characters
Bill DavisDesignerMultiple titles

Voice Acting Eras at Sierra

  1. Pre-CD era (1980–1990) — No voice acting; PC-speaker beeps and text dialog only.
  2. CD-ROM speech debut (1990–1992) — King’s Quest V CD (1991) first to feature comprehensive voice cast; mostly Sierra staff with limited Hollywood-talent budget.
  3. Hollywood-talent investment (1993–1996) — Tim Curry, Robby Benson, Cam Clarke, Jennifer Hale era. Sierra invested in Hollywood-grade voice direction.
  4. CUC-era cost-cutting (1996–1999) — Voice budgets reduced; smaller casts.
  5. Activision-era revival (2014–2017) — Christopher Lloyd, Zelda Williams, Tom Kenny, Loretta Devine for King’s Quest (2015).
  6. Post-Sierra alumni projects (2010-present) — Smaller indie budgets; community/Kickstarter-funded voice work for Gabriel Knight 20th, Hero-U, SpaceVenture.

Voice Cast Sources for Vault Pages

When adding voice cast information to an individual game page:

  1. Primary source: official game credits (in-game credits sequence, manual, box).
  2. Secondary source: Behind The Voice Actors — fan-maintained but well-cross-referenced database.
  3. MobyGames credits — generally reliable for voice-actor credits.
  4. IMDb game-credit entries — Hollywood-talent crossovers often documented there.

Discrepancies between sources should be noted with “(per Source X)” annotations on the game page’s Voice Cast table.

See Also

References

Footnotes

  1. Wikipedia — Tim Curry — Voice-acting credits including Gabriel Knight ↩

  2. IGN — Christopher Lloyd King’s Quest interview — Casting and performance notes ↩

  3. Adventure Game Hotspot — King’s Quest 2015 cast — Voice cast documentation ↩

  4. Game Informer — King’s Quest 2015 feature — Zelda Williams casting ↩

  5. Wikipedia — Cam Clarke — Voice-acting career including Sierra work ↩

  6. Wikipedia — Jennifer Hale — Career voice credits ↩

  7. MobyGames — Josh Mandel — Designer/performer credits ↩

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