- Lenny Venito - Uncle Chuck (voice)
- Michael-Leon Wooley - General (voice)
- Chris Parnell - Judge Blort Clooney (voice)
- Bruce Vilanch - Himself (voice)
- Brian Posehn - Beach Ball Grandpappy (voice)
- Pamela Adlon - Drab Lieutenant (voice)
- Harland Williams - Helper Hue (voice)
- Sigourney Weaver - Lady Starblaster (voice)
- Kate Micucci - Cute-ling General (voice)
- Kumail Nanjiani - Cute-ling Mayor (voice)
- Kenny Loggins - Montage Singer (voice)
- Garry Marshall - Soda Jerk (voice)
- Jeff Gordon - Wacky Bustgutty (voice)
- Jason Alexander - Coach Wallace (voice)
- Jane Kaczmarek - Coach Jackie (voice)
- John K. Anderson - Announcer Mike (voice)
- John Henson - Announcer Ron (voice)
- Maurice LaMarche - Fredericks (voice)
- Maurice LaMarche - Narrator (voice)
- Maurice LaMarche - Fredricks (voice)
- Maurice LaMarche - Unicorn Soldiers (voice)
- Maurice LaMarche - Troll (voice)
- Maurice LaMarche - Crispity Cockatoo (voice)
- Wanda Sykes - Shirley B. Awesome (voice)
- Yael Stone - General Bighorn (voice)
- Rena Strober - Hotel Reviewer (voice)
- Rena Strober - Orchid / Rootilda (voice)
- Rena Strober - Queen (voice)
- Rena Strober - Orchid (voice)
- Bill Nye - Bill Nye (voice)
- John DiMaggio - Hooded Pixie (voice)
- Peter Stormare - Rufus (voice)
- Jeff Bennett - Eight Ball (voice)
- Kari Wahlgren - Bowling Ball (voice)
- Pete Holmes - Ryan (voice)
- Dee Bradley Baker - Referee (voice)
- Dee Bradley Baker - Tony the Elephant (voice)
- Dee Bradley Baker - (voice)
- JB Blanc - Captain of the Guard (voice)
- Michelle Fairley - Queen Igneous (voice)
- Jennifer Veal - Princess Magma (voice)
- George Takei - Sylvester Kobayashi (voice)
- Maria Bamford - The President (voice)
- Maria Bamford - Mrs. Monkenfluffer (voice)
- Maria Bamford - Nug (voice)
- Maria Bamford - Mrs. Monkenfluffer / Matthews (voice)
- Maria Bamford - Land Shark (voice)
- Maria Bamford - Matthews (voice)
- Fred Tatasciore - Grinkon (voice)
- Fred Tatasciore - Mr. Egsgard (voice)
- Fred Tatasciore - Coach Egsgard (voice)
- Lauren Tom - Tia Kobayashi (voice)
- Kevin Michael Richardson - Dr. Hissy (voice)
- Kevin Michael Richardson - Mountain Beast (voice)
- Jess Harnell - Vocalist (voice)
- Jess Harnell - Old Man Middleberg (voice)
- Hynden Walch - Yumi (voice)
- Michael Chandler - Arata (voice)
- Roger Craig Smith - Hideo (voice)
- Steve Blum - Snow Monkey Bus (voice)
- Judith Light - Mrs. Wright (voice)
- Reginald VelJohnson - Flannigan (voice)
- Brad Kane - "Handsome" Grinkon (voice)
- Paul Reubens - The Milkman (voice)
- Paul Reubens - The Butterman (voice)
- Neil Kaplan - Club Owner (voice)
- Cree Summer - The Merchant (voice)
- Adam West - Captain Super Captain (voice)
- Adam West - Captain Super Captain / Professor Evil Professor (voice)
- Brandon Scott - Alex (voice)
- Fiona Shaw - Hedwin (voice)
- Vince Gilligan - Axalon (voice)
- Alex Kingston - Vlurgen (voice)
- Mark Hamill - Adam Tom-Kat Badawy (voice)
- Olivia Holt - Amber Briggs (voice)
- Beau Bridges - Sheriff Scaley Briggs (voice)
- Sean Astin - Blaze (voice)
- Blake Anderson - Hogarth (voice)
- Paul Alborough - Mayor Direginald Hindenburg (voice)
- Curtis Armstrong - Super Amazing Bouncy Ball (voice)
- James Hong - Windmill Monster (voice)
- Elizabeth Henstridge - Princess Argelbleccht Blunkenthorthph (voice)
- Yvette Nicole Brown - Boat Maria (voice)
- Sonequa Martin-Green - Pirate Maria (voice)
- Henry Winkler - The Snowman (voice)
- Diana Rigg - Mayor Pink Panda (voice)
- Jeff Ross - Sonny (voice)
- Marc Maron - Piv (voice)
- Lauren Lapkus - Matilda (voice)
- Tress MacNeille - General Talon (voice)
- Jared Bush
- Philip Cohen
- Sam Levine
- Beau Black
Mark Hamill interpreta a Adam Tom-Kat Badawy (voice) en la serie.
Sean Astin interpreta a Blaze (voice) en la serie.
Peter Stormare hace el papel de Rufus (voice).
Sam Levine interpreta a Phyllis (voice) en la serie.
Beau Bridges hace el papel de Sheriff Scaley Briggs (voice).
Garry Marshall interpreta a Soda Jerk (voice) en la serie.
Jason Alexander hace el papel de Coach Wallace (voice).
George Takei interpreta a Sylvester Kobayashi (voice) en la serie.
Thomas Middleditch interpreta a Penn Zero (voice) en la serie.
Tania Gunadi interpreta a Sashi Kobayashi (voice) en la serie.
Capítulo disponible en las siguientes plataformas:
