Kevin Murphy
Tom Servo (voice) (163 eps)
Michael J. Nelson
Mike Nelson (130 eps)
Trace Beaulieu
Crow T. Robot (voice) / Dr. Clayton Forrester (128 eps)
Jim Mallon
Gypsy (voice) (117 eps)
Frank Conniff
TV's Frank (110 eps)
Joel Hodgson
Joel Robinson (99 eps)
Mary Jo Pehl
Pearl Forrester (62 eps)
Patrick Brantseg
Gypsy (voice) (52 eps)
Bill Corbett
Crow T. Robot (voice) / Observer (48 eps)
Paul Chaplin
Observer #1 (31 eps)
Bridget Jones Nelson
Darlene (17 eps)
J. Elvis Weinstein
Tom Servo (voice) / Dr. Laurence Erhardt (13 eps)
Beez McKeever
Octavia (11 eps)
Peter Rudrud
TV Announcer (6 eps)
James Smith
Jerry (2 eps)
Bradley J. Keely
Little Boy (2 eps)
Robert Smith
Howard (1 eps)
Leonard Maltin
Self (1 eps)
Jack Beaulieu
Aged Dr. Forrester (1 eps)
Mike Dodge
Bob the A-Bomb (1 eps)
Robert Czech
Sylvia (1 eps)
David Sussman
The Power Steves Accordion Player (1 eps)
Tim Paulson
Party Goer (1 eps)
Tim Johnson
Mike Down (1 eps)
Barbara Tebben
Friendly Phone Representative (voice) (1 eps)
Faye Burkholder
Studio Assistant (1 eps)