- Jasper Randall - Background Vocal Contractor (voice)
- Jasper Randall - Background Singer (voice)
- Amanda McCann - Exposition Leaves (voice)
- Jamie Cullum - Sunfish Merguy (voice)
- Donna Lynne Champlin - Prairiedogtaur (voice)
- Fred Armisen - Splendib / Malandrew / Message Bird (voice)
- Fred Armisen - Splendib / Bimbam (voice)
- Fred Armisen - Splendib / Kittentaur / Malandrew (voice)
- Fred Armisen - Message Bird (voice)
- Fred Armisen - Malandrew (voice)
- Fred Armisen - Splendib / Message Bird / Teacher Birdtaur (voice)
- Fred Armisen - Splendib / Guard / Human Man (voice)
- Tony Hale - Durpletoot (voice)
- Tony Hale - Tony Durpleton (voice)
- Tony Hale - Durpletoot / Tony Durpleton (voice)
- Dee Bradley Baker - Baydenbeast / Minotaur (voice)
- Dee Bradley Baker - Stabby / Puffintaur (voice)
- Dee Bradley Baker - Stabby / Baydenbeast / Bisi-That-Guy / Minotaur / Man (voice)
- Dee Bradley Baker - Stabby / Cockroachtaur / Rataur (voice)
- Dee Bradley Baker - Stabby / Gophertaur 2 / Wormtaur (voice)
- Dee Bradley Baker - Stabby / Bird / Deer / Muskoxtaur (voice)
- Dee Bradley Baker - Stabby / Muskoxtaur / Puffintaur / Minotaur (voice)
- Dee Bradley Baker - Stabby / Muskoxtaur / Puffintaur (voice)
- Grey DeLisle - Message Bird / Bayden / Old Man / Hanglydangly (voice)
- Grey DeLisle - Bayden / Lone Survivor (voice)
- Carl Faruolo - Gebbrey (voice)
- Carl Faruolo - Gebbrey / Worker Man / Henchman 1 (voice)
- Carl Faruolo - Gebbrey / Barnus (voice)
- Carl Faruolo - Gebbrey / Message Bird (voice)
- Carl Faruolo - Barnus (voice)
- Isabella Russo - Young Glendale (voice)
- Andy Walken - Young Durpleton (voice)
- Flula Borg - Comfortable Doug (voice)
- Flula Borg - Message Bird (voice)
- Flula Borg - Comfortable Doug / Gary (voice)
- Maria Bamford - Malangella / Maitre D / Opposumtaur (voice)
- Maria Bamford - Malangella (voice)
- Allie Feder - Background Singer (voice)
- Allie Feder - Background Singers (voice)
- Paul F. Tompkins - Tail (voice)
- Paul F. Tompkins - Tail / Human Tail / Yaktaur / Trashtaur (voice)
- Colleen Ballinger - Crandy / Message Bird (voice)
- Colleen Ballinger - Crandy (voice)
- Colleen Ballinger - Crandy / Basket Woman (voice)
- Randy Crenshaw - Background Singer (voice)
- Randy Crenshaw - Background Singers (voice)
- Fletcher Sheridan - Background Singer (voice)
- Fletcher Sheridan - Background Singers (voice)
- Baraka May - Background Singer (voice)
- Baraka May - Background Singers (voice)
- Brian Stokes Mitchell - Nowhere King (voice)
- Brian Stokes Mitchell - Nowhere King / Elk / Henchman 2 (voice)
- Toby Chu - Background Singer (voice)
- Toby Chu - Background Singers (voice)
- Renée Elise Goldsberry - Waterbaby (voice)
- Renée Elise Goldsberry - Waterbaby / Medic (voice)
- Wendie Malick - Gurple Durpleton (voice)
- Lea Salonga - Woman (voice)
- Brian d'Arcy James - The General (voice)
- David Johansen - Beartaur (voice)
- Rosalie Craig - Whaletaur Shaman (voice)
- Klara Söderberg - Big Tree (voice)
- Johanna Söderberg - Little Tree (voice)
- Scott Hoying - Mouthpiece (voice)
- Fred Tatasciore - Badgertaur (voice)
- Taron Egerton - Pigeontaur / Albatrosstaur (voice)
- Nate Torrence - Figure 1 (voice)
- Katie Shanahan
- Kiki Manrique
- Megan Nicole Dong
- Jen Bennett
- Jeremy Polgar
- Amalia Levari
- Minty Lewis
- Jessie Wong
- Ryan Harer
- Jen Bardekoff
- Aminder Dhaliwal
- Linda LaMontagne
- Toby Chu
- Andy Walken
Kimiko Glenn hace el papel de Horse (voice).
Jessie Mueller interpreta a Rider (voice) en la serie.
Megan Hilty hace el papel de Wammawink (voice).
Parvesh Cheena interpreta a Zulius (voice) en la serie.
Josh Radnor hace el papel de Durpleton (voice).
Chris Diamantopoulos hace el papel de Ched (voice).
Capítulo disponible en las siguientes plataformas:
