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James Whitmore as Mark Twain (voice) |
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Michele Mariana as Becky Thatcher / The Mysterious Stranger / Girl in Crowd (voice) |
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Gary Krug as Huck Finn (voice) |
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Chris Ritchie as Tom Sawyer (voice) |
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John Morrison as Adam (voice) |
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Carol Edelman as Eve (voice) |
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Dal McKennon as Jim Smiley / Newspaper Boy (voice) |
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Herb Smith as The Stranger (voice) |
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Marley Stone as Aunt Polly (voice) |
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Wilbur Vincent as The Mysterious Stranger (voice) |
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Wally Newman as Captain Stormfield (voice) |
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Tim Conner as Three-Headed Alien / Mud People (voice) |
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Todd Tolces as Saint Peter (voice) |
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Billy Scream as The Indexivator / Animal (voice) |
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Bob Griggs as First Heckler (voice) |
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Coward Wholesale as Second Heckler (voice) |
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Tom Gasek as Homer / Man in Crowd / Calaveras Miner / Mud People (voice) |
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Sally Sopwith as Woman in Crowd (voice) |
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Will Vinton as Dan'l Webster (voice) |
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Andrew Edwards as First Miner (voice) |
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Harvey Brown as Second Miner (voice) |
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Craig Bartlett as Calaveras Miner (voice) |
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Mark Gustafson as Calaveras Miner (voice) |
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Bruce McKean as Calaveras Miner (voice) |
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Billy Victor as God (voice) |
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Compton Downs as Injun Joe (voice) |
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Nell Suza as Animal / Mud People (voice) |
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Tim Kahn as Animal (voice) |
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Stashu Beencof as Animal (voice) |
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Gary Thompson as Baby Cain (voice) |
| Sound | Kelley Baker | Sound Effects Editor |
| Sound | Kelley Baker | Sound Effects Designer |
| Editing | Kelley Baker | Negative Cutter |
| Editing | Kelley Baker | Editor |
| Writing | Susan Shadburne | Writer |
| Directing | Will Vinton | Director |
| Art | Joan C. Gratz | Set Designer |
| Visual Effects | Bill Feisterman | Animation |
| Art | Don Merkt | Set Designer |
| Visual Effects | Mark Gustafson | Animation |
| Visual Effects | Barry Bruce | Animation |
| Visual Effects | Barry Bruce | Character Designer |
| Visual Effects | Tom Gasek | Animation |
| Visual Effects | Don Merkt | Animation |
| Visual Effects | Bruce McKean | Animation |
| Visual Effects | Will Vinton | Animation |
| Visual Effects | Matt Wuerker | Animation |
| Visual Effects | Craig Bartlett | Animation |
| Sound | Billy Scream | Original Music Composer |
| Production | Hugh Kennedy Tirrell | Executive Producer |
| Writing | Mark Twain | Author |
| Sound | Luther Greene | Foley Artist |
