Billy West

Ren / Stimpy (voice)

Michael Kohler

TV Announcer (voice) / Mr. Horse (voice) / Audience Member 3 (voice) / Giraffe / Human (voice) / Mr. Horse / Operator / Tough Guy 1 (voice) / Wröng Co Announcer (voice) / Other Hair (voice) / Kid Roaches / Italian Cockroach / Irish Cockroach / Cockroach 2 (voice) / Bus Driver (voice)

Debra Wilson

Crowd Member #1 / Singer (voice) / Cow's Udder / Cow (voice) / Jimmy / Mother / Iguana (voice) / Clear Toilet Woman (voice) / Landlord / Child Cockroach (voice) / Townsperson 1 (voice) / Child (voice)

James Adomian

Mailman / Robbie Stumps (voice) / Man 1 (voice) / Truck Driver / Walrus (voice) / Davis / Otter / Capybara (voice) / Badger / Crocodile (voice) / Vlad / Walrus (voice) / Walrus Boss / Spa Worker / Leader Bug (voice)

H. Michael Croner

Serious Announcer (voice) / TV Announcer / Zealous Hair (voice) / Cheery Narrator (voice) / Radio DJ (voice) / Narrator (voice)

David Kaye

Roachard / Chet (voice) / Kids (voice) / Powdered Toast Man (voice) / Dad Cockroach / Roachard / Cockroach 3 (voice) / Don (voice)

Sam Richardson

Announcer (voice) / Log Announcer / Chipper Bro-Dude (voice) / Cockroach Father (voice) / Satan (voice)

Jenny Jaffe

Audience Member 1 (voice) / Demon (voice) / Interviewer (voice) / Pregnant Cockroach / Kid Roaches / Newsboy / Old Cockroach Woman / Cockroach 1 (voice)

Cheryl Chase

Mother Hair / Hair 1 (voice) / Girl (voice) / Kid / Haunted Dolls (voice) / Fish 2 (voice)

Harris Peet

Kowalski / Fire Chief (voice) / Muddy Mudskipper (voice) / Fire Chief / Townsperson 2 / Turtle (voice)

Patti Harrison

Courtney Nature (voice) / Woman (voice) / Roachel (voice)

Natalie Palamides

Kid (voice) / Child Hair (voice) / Amanda Radiostation (voice)