- Curtis Armstrong - Scooter (voice)
- Kurtwood Smith - General Galapagos (voice)
- Brad Garrett - Zoltar / Thuggo (voice)
- Jason Priestley - Bo Diddly Squat (voice)
- Elinor Donahue - Mom (voice)
- Corey Feldman - Bo Diddly Squat (voice)
- Kirk R. Thatcher - Klutter (voice)
- Kathy Ireland - Andrea (voice)
- David Silverman - John (voice)
- Sandy Fox - Sandee (voice)
- Don Cornelius - Don Corneilus (voice)
- Bobcat Goldthwait - Blitzen (voice)
- Phil Hartman - Psycho Bunny (voice)
- Kimberley Kates - Witch (voice)
- Tim Curry - Narrator (voice)
- Dee Snider - Dee Snidersaur (voice)
- John Walsh - John Walsh (voice)
- 'Weird Al' Yankovic - 'Weird Al' Yankovic (voice)
- William Shatner - Santa Claus (voice)
- William Shatner - Commander Berzerk (voice)
- Margaret Loesch - Margaret Loesch (voice)
- Cynthia Rothrock - Cynthia Rothrock (voice)
- Fabio - Fabio (voice)
- David Duchovny - Fox Mulder (voice)
- Gillian Anderson - Dana Scully (voice)
- John Landis - John Landis (voice)
- Mr. T - Mr. T-Rex (voice)
- Heather Locklear - Alice (voice)
- Buck Henry - Cupid (voice)
- Kati Rocky - Kati Rocky (voice)
- Nathan Wang - Nate the Dragon (voice)
- Savage Steve Holland
- Patrick Loubert
- Clive A. Smith
- Michael Hirsh
Dan Castellaneta interpreta a Mittens (voice) en la serie.
William Shatner interpreta a Commander Berzerk (voice) en la serie.
Karen Haber interpreta a Annabelle (voice) en la serie.
Cam Clarke interpreta a Puffy / Wuz Wuz / Ryan (voice) en la serie.
Charlie Adler interpreta a J.B. / Bill (voice) en la serie.
Elizabeth Daily interpreta a Wendy / Kozy (voice) en la serie.
John Kassir interpreta a Mittens (voice) en la serie.
Curtis Armstrong interpreta a Scooter (voice) en la serie.
Kurtwood Smith interpreta a General Galapagos (voice) en la serie.
Brad Garrett interpreta a Zoltar / Thuggo (voice) en la serie.
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