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Janice Karman as Theodore Seville / Brittany / Jeanette / Eleanor (voice) |
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Ross Bagdasarian Jr. as David 'Dave' Seville / Alvin Seville / Simon Seville (voice) |
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June Foray as Vinny (voice) |
| Production | Ken Spears | Executive Producer |
| Production | Joe Ruby | Executive Producer |
| Writing | Janice Karman | Writer |
| Production | Janice Karman | Producer |
| Production | Larry Huber | Associate Producer |
| Writing | Elana Lesser | Co-Writer |
| Writing | Cliff Ruby | Co-Writer |
| Directing | Charles August Nichols | Director |
| Writing | Ross Bagdasarian Jr. | Writer |
| Production | Ross Bagdasarian Jr. | Producer |
