James Whitmore
Mark Twain (voice)
Michele Mariana
Becky Thatcher / The Mysterious Stranger / Girl in Crowd (voice)
Gary Krug
Huck Finn (voice)
Chris Ritchie
Tom Sawyer (voice)
John Morrison
Adam (voice)
Carol Edelman
Eve (voice)
Dal McKennon
Jim Smiley / Newspaper Boy (voice)
Herb Smith
The Stranger (voice)
Marley Stone
Aunt Polly (voice)
Wilbur Vincent
The Mysterious Stranger (voice)
Wally Newman
Captain Stormfield (voice)
Tim Conner
Three-Headed Alien / Mud People (voice)
Todd Tolces
Saint Peter (voice)
Billy Scream
The Indexivator / Animal (voice)
Bob Griggs
First Heckler (voice)
Coward Wholesale
Second Heckler (voice)
Tom Gasek
Homer / Man in Crowd / Calaveras Miner / Mud People (voice)
Sally Sopwith
Woman in Crowd (voice)
Will Vinton
Dan'l Webster (voice)
Andrew Edwards
First Miner (voice)
Harvey Brown
Second Miner (voice)
Craig Bartlett
Calaveras Miner (voice)
Mark Gustafson
Calaveras Miner (voice)
Bruce McKean
Calaveras Miner (voice)
Billy Victor
God (voice)
Compton Downs
Injun Joe (voice)
Nell Suza
Animal / Mud People (voice)
Tim Kahn
Animal (voice)
Stashu Beencof
Animal (voice)
Gary Thompson
Baby Cain (voice)