- Greg Eagles - Tarantula Shaman
- Robert Ochoa - Troll
- Noah Crawford - No-Beard
- Kevin M. Horton - Philbert Dingleberg
- Doug Brochu - Oogie
- Davis Cleveland - Chauncey
- Daniel Messier - King of Kincou
- Paul Costa - Roger
- Leslie-Anne Panaligan - Aerosol
- Madison Riley - Amazonia
- Ben Giroux - Pupaley
- Ted Rooney - Royal Tracker
- Leland Crooke - The Professor
- Christoph Sanders - Tristan
- Erik Betts - Tribesman
- Craig Dabbs - Red Beard
- Jack DePew - Captain
- Edward Fordham, Jr. - Wally
- Heather Cowles - Roberta
- Tai Urban - Pirate Boy Calico Jack Jr.
- Chris Wylde - Two Peg
- Chris Blasman - Hawk
- Bob Saldana - Garbage man
- Tichina Arnold - Nancy
- John Eric Bentley - Bill
- Matthew Willig - Tarantula Leader
- Edie McClurg - June
- Patrick Gallagher - Farhod the Fierce
- Tiffany Mulheron - Princess Iris
- Oliver Muirhead - King of Cornea
- Tyrel Jackson Williams - Hilo Tutuki
- Dalip Singh - Atog
- Adoni Maropis - The Oracle
- Jennifer Elise Cox - Lady of the Cave
- Michael Bailey Smith - Zadoc
- Robin Coleman - Hilda
- Debbie Lee Carrington - Squonk Queen
- Douglas Tait - Big Pupaley
- Douglas Tait - Mr. Boogey
- Vincent Pastore - Yamaguchi (voice)
- Vincent Pastore - Yamakoshi (voice)
- Mighty Mike Murga - Squonk
- Eve Sigall - Old Hag
- Eve Sigall - Old Hag Staffer
- John O'Hurley - Narrator
- Brian Drolet - Cave Dude
- Ron Fassler - Dale Davis
- Jillian Nelson - Cave Girl
- Kara Pacitto - Queen Hesta
- Katelyn Pacitto - Queen Desta
- John Hartmann - Rockhead
- Noshir Dalal - Jason Makoola
- Jillian Rose Reed - Tessa
- Clint Culp - P.E. Coach
- Gregory Pugliese - Rondo
- Edi Patterson - Charlotte
- Martin Klebba - Hibachi
- Matt Knudsen - Snowflake
- Sayeed Shahidi - Billy
- George Sharperson - Krinkle
- Walter Jones - Tough Poet
- Wesley Mann - Counselor
- Mikey Post - Dr. Micah
- Mikey Post - Sherpa Squonk
- Abbie Cobb - Ethel
- Emily Wilson - Gertrude
- Sinqua Walls - Pierce
- Skyler Vallo - Sabrina
- Matthew Florida - Biff
- Jennifer Stone - Priscilla
- Scott Anthony Leet - King Kalakai
- Robert R. Shafer - King Malakai
- Dwight Howard - The Cook
- James Hong - Head Elder
- James Hong - Timothy Kalooka-Khan
- James Hong - Judge
- James Hong - Shaman
- Brian R. Norris - Spatula Jones
- Kasey Wilson - Pitricia
- Eric Artell - Gil
- Alexandra Ella - Gilda
- Hayley Hasselhoff - Sasha
- Blaise Godbe Lipman - Morris
- Karan Brar - Tito
- Mike Mizanin - Damone
- Eden Sher - Billie
- Erin Sanders - Nannie
- Carlson Young - Chelsea
- Abigail Klein - Tiffany
- Wendy Worthington - Queen Oogli
- Jade Brandais - Sara
- Cooper Barnes - Tom
- Nick Stanner - Steve
- Abraham Benrubi - Silver Fox
- Joe Massingill - Tree Shaker
- Brittany Ross - Candis
- Robert Michael Morris - Howard Ritterstein
- Jonathan Adams - Mr. Dawson
- Logan Browning - Rebecca Dawson
- Denyse Tontz - Tarantula Girl
- Kenny Apel - Yeti
- Amir Arison - King Kunu
- Tara R. Cook - Queen Annabella
- Damion Poitier - Kaita
- Dan Cross
Edie McClurg interpreta a June en la serie.
Martin Klebba interpreta a Hibachi en la serie.
Doc Shaw hace el papel de Boome Parker.
Adam Hicks interpreta a Boz Parker en la serie.
Kelsey Asbille hace el papel de Mikayla Makoola.
Ryan Ochoa interpreta a Lanny Parker en la serie.
Geno Segers interpreta a Mason Makoola en la serie.
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