"This Thumb Double Feature includes exclusive special appearances by The Thumbersons."
Steve Oedekerk
as Loke Groundrunner / Dad / Jake / 'We've Been Hit' (voice)
Mary Jo Keenen
as Geranium / Old Geranium (voice)
Paul Greenberg
as Prissypeo / The Captain / 'Lovely Ship' Steward (voice)
Rob Paulsen
as Oobedoob Benubi / Mr. Prickle / Thumbtrooper (voice)
Jim Jackman
as Dentist / Boiler Room Guy #1 / Crunchy / Lieutenant (voice)
Mark DeCarlo
as Black Helmet Man / The Interviewer / TV Anchor (voice)
Jim Hope
as Commander Cuticle / Effeminate Thumb / Instructor (voice)
David Floyd
as Baldie the Thumb Wrestler / Uncle Soondead / Fighter (voice)
Megan Cavanagh
as Fighter Pilot #2 / Geranium's Servant (voice)
Ross Shafer
as Hand Duet (voice) (as Ross Schaefer)
Andrea Fears
as Princess Bunhead (voice)
Matthew Aufdenspring
as We're Sinking! (voice)
Mary Mares
as No We Can't Be Sinking (voice)
John Laus
as Baby Buyer / Piano Man (voice)
Tim Tarkinan
as It's a Big Ship (voice)
Heidi Fugeman
as Ship Must go on for Miles (voice)
Joe Liss
as It's a Big Ship!' / Bedwetter / 'I Wet Myself (voice)
Jenny Rose
as What a Lovely Big Ship!' / 'We're Going Down! (voice)
Eric Trueheart
as All Aboard Steward / Good Gravy What a Ship! (voice)
Tony Pyle
as Submarine Pilot / Excited One-Eyed Thumb / Lookout #3 (voice)
Director
Todd Portugal
