| Episode credited cast: |
 | Janice Karman | - | Theodore Seville / Brittany / Jeanette / Eleanor (voice) |
 | Ross Bagdasarian Jr. | - | David 'Dave' Seville / Alvin Seville / Simon Seville (voice) (as Ross Bagdasarian) |
| Rest of cast listed alphabetically: |
 | Derek Barton | - | (voice) |
 | Nancy Cartwright | - | Additional Voices (voice) |
 | Peter Cullen | - | (voice) |
 | Jack Enyart | - | (voice) |
 | Pat Fraley | - | (voice) |
 | Johnny Haymer | - | (voice) |
 | Katie Leigh | - | (voice) |
 | Kerrigan Mahan | - | (voice) |
 | Julie McWhirter | - | (voice) (as Julie Dees) |
| Doreen Murphy | - | (voice) |
 | Frank Welker | - | Additional Voices (voice) |
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