- Richard Simmons - Coach Salmons (voice)
- Kari Wahlgren - Shellsea / Snake (voice)
- Vanessa Marshall - Mouse (voice)
- Vanessa Marshall - Shiloh (voice)
- Doug Brochu - Lonnie (voice)
- Jennifer Coolidge - Ms. Lips (voice)
- Jennifer Coolidge - Doris (voice)
- Maxwell Atoms - Bo Gregory / Hugh Edmonson (voice)
- John Caparulo - Headphone Joe (voice)
- John Caparulo - Finex Delivery (voice)
- Tiffany Thornton - Doris (voice)
- Jane Carr - Dan & Ann Chovie (voice)
- Paula Jai Parker - Yolanda (voice)
- Ozzy Osbourne - The Earth Troll (voice)
- Edie McClurg - Mrs. Goldfishberg (voice)
- Noah Z. Jones - Bea's Dad / Worker 2 (voice)
- Noah Z. Jones - Bea's Dad (voice)
- Jerry Stiller - Principal Stickler (voice)
- Kevin McDonald - Dr. Frog (voice)
- Jason Alexander - Mr. Nibbles (voice)
- Sabrina Bryan - Pamela Hamster (voice)
- Carlos Alazraqui - Mr. Caliente / Newscaster (voice)
- Rob Paulsen - Magic Hamster Mirror / Greg (voice)
- James Sie - Spiky Ninja (voice)
- Chris Parnell - Announcer / Allibut (voice)
- Eva Amurri Martino - Bleak Molly (voice)
- Jerry O'Connell - Sterling Hamsterton (voice)
- Maxim Knight - Tetra Captain (voice)
- Kenton Duty - Mr. Puffer / Johnny Space Crab (voice)
- Rosie Perez - Chichelsea Chihuahua (voice)
- Bobcat Goldthwait - Roy / Pillow (voice)
- Bobcat Goldthwait - Fish Santa (voice)
- Felicia Day - Angela (voice)
- George Takei - Mr. Bird (voice)
- George Takei - Bird / Robot (voice)
- George Takei - Mr. K (voice)
- Wallace Shawn - Rat King (voice)
- Wendi McLendon-Covey - Ruby (voice)
- Ed O'Neill - Riff (voice)
- Richard Steven Horvitz - Salmon 2 (voice)
- Richard Steven Horvitz - Ninja Fish (voice)
- Richard Steven Horvitz - Portswain (voice)
- Annie Potts - Nurse Fishington (voice)
- Giada De Laurentiis - Giada de Laurentfish (voice)
- Bobby Flay - Bobby Filet (voice)
- Sunil Malhotra - Baby / Old Man (voice)
- Dave Wittenberg - The Geckoach / Punt (voice)
- Dave Wittenberg - Wilford / Vampire Clam (voice)
- Tara Strong - Old Woman / Granny Hearswell / Committee Woman (voice)
- Ana Gasteyer - Hot Cocoa (voice)
- Grey DeLisle - Casting Director (voice)
- Grey DeLisle - Granola Girl (voice)
- Shaun White - Shaun Whitefish (voice)
- Tress MacNeille - Bassie / Salmon Lady (voice)
- Corey Burton - Stage Manager / Show Narrator (voice)
- S. Scott Bullock - Movie Oscar (voice)
- S. Scott Bullock - Radio Host (voice)
- S. Scott Bullock - Ice Pick (voice)
- Diedrich Bader - Mr. McGroucherson (voice)
- Rachael MacFarlane - Willimina / Noelle (voice)
- David Shair - The Other Milo (voice)
- David Tennant - Oscar's Brain (voice)
- John Waters - Ezekiel Freshwater / Hair Man (voice)
- John Waters - The Yeti Lobster (voice)
- Genevieve Hannelius - Amanda (voice)
- Patrick Warburton - Man Voiced Albert (voice)
- Jaime Pressly - Lafeesha (voice)
- Candi Milo - Movie Angela (voice)
- John Rhys-Davies - Magic Apple (voice)
- Laura Ortiz - Veronica (voice)
- Michael Clarke Duncan - Guardian Cat (voice)
- Brian Doyle-Murray - Baby Face Bryant (voice)
- Matt Hill - Animal Control Guy #1 / Delivery Man (voice)
- Jennifer Hale - Pony (voice)
- Mark McGrath - Rocktopus (voice)
- Fred Tatasciore - John Office Fish (voice)
- Jan Hooks - Savannah Salmons (voice)
- Jason Earles - Hamster Boy (voice)
- Laura Marano - Hamster Girl #2 (voice)
- Caroline Sunshine - Alexis Hamster (voice)
- Marc Thompson - Radio Announcer #1 (voice)
- Travis Willingham - Construction Guy (voice)
- John Ratzenberger - Wilford (voice)
- Meghan McCarthy
- Justin Roiland
- Neal Dusedau
- Jackie Buscarino
- Tim McKeon
- Nick Confalone
Justin Roiland hace el papel de Oscar (voice).
Alex Hirsch interpreta a Clamantha (voice) en la serie.
Edie McClurg hace el papel de Mrs. Goldfishberg (voice).
John Rhys-Davies interpreta a Magic Apple (voice) en la serie.
Jason Alexander interpreta a Mr. Nibbles (voice) en la serie.
Rosie Perez hace el papel de Chichelsea Chihuahua (voice).
George Takei hace el papel de Mr. K (voice).
Jerry O'Connell hace el papel de Sterling Hamsterton (voice).
Brian Doyle-Murray hace el papel de Baby Face Bryant (voice).
Kyle Massey interpreta a Milo (voice) en la serie.
Capítulo disponible en las siguientes plataformas:
