Sleepy Princess in the Demon Castle is a 2020 anime based on the manga series by Kagiji Kumanomata. It ran in Japan from October 6 to December 22, 2020. Sound Cadence Studios is producing an English dub of the series for FUNimation Entertainment, which will premiere on the FunimationNow streaming service on February 22, 2021.
English Voice Cast
Main Cast
- Alejandro Saab - Twilight the Demon King
- Kira Buckland - Princess Syalis
Secondary Cast
- Ben Lepley - Quilladillo
- Christopher Guerrero - High-Rank Skeleton Soldier
- Christopher Wehkamp - Hades
- Daman Mills - Castle Grunt Goblin (eps3-4)
- Elizabeth Maxwell - Queen Nemlis/Female Narrator
- Gianni Matragrano - Minotaur
- J. Michael Tatum - Great Red Siberian
- Jason Marnocha - Fire Venom Dragon
- Jim Foronda - Frankenzombie
- Kevin D. Thelwell - Poseidon
- Michele Knotz - Neo Alraune
- Mike Haimoto - Demon Cleric Leonard
- Nicholas Andrew Louie - Dawner the Hero
- Ricco Fajardo - Castle Grunt Goblin
- Robbie Daymond - Hypnos
Minor Cast
- Aaron Dismuke - Cursed Dentist (ep8)
- Alexis Tipton - Ker (ep7), Woman (ep10)
- Amber Lee Connors - Maids (ep1)
- Andy Barnett - Elder (eps1, 13), Prisoner B (ep9)
- Anthony Sardinha - Scaly Reindeer
- Brendan Blaber - Jester Soldier (ep3), Two-Headed Dragon
- Brent Mukai - Prisoner A (ep9)
- Bryn Apprill - Dawner the Hero (Young)
- Dani Chambers - Glow O' Wisp
- Dawn M. Bennett - Ros (ep7)
- Edward Bosco - Evening Star the Paladin (ep12)
- Emily Frongillo - Bubble Soldier (ep6), Operator (ep9)
- Howard Wang - Bigwig Penguin
- Ian Sinclair - Evil Tree Spirit (ep5), Ice Golem
- Jād Saxton - Cubey
- Justice Washington - Demi Polar Bear (ep4)
- Kamran Nikhad - Item Storage Guard
- Kara Edwards - Ber (ep7)
- Kent Williams - Professor Gearbolt (ep6)
- Kieran Flitton - Bianco, Prisoner C (ep9)
- Kyle Igneczi - Scissors Sorcerer
- Marc Swint - Morgen the Paladin (ep12)
- Marissa Lenti - Stamp Cat (ep2)
- Mark Allen Jr. - Killer Snowman (ep4)
- Michael Sorich - Forest Elder (ep2)
- Mike Pollock - Monster Shroud
- Morgan Lauré - Harpy
- Sarah Wiedenheft - Killer Rhino Beetle (ep2)
- Suzie Yeung - Alazif (ep3), Maids (ep1)
- Xanthe Huynh - Florence
Additional Voices
- Aaron Campbell
- Aimee Smith
- Alejandro Saab
- Alexis Tipton
- Alyssa Dumas
- Amber Lee Connors
- Andy Barnett
- Anthony Sardinha
- Ben Lepley
- Brandon McInnis
- Brendan Blaber - Gummy (ep1), Additional Voices
- Brent Mukai - Doc Anteater (ep8), Additional Voices
- Bryce Papenbrook - Ghost Shroud, Additional Voices
- Caleb Morphy
- Cedric Williams - Baddie Diamond (ep1), Additional Voices
- Christopher Guerrero - Tire Genie (ep4), Additional Voices
- Daman Mills
- Dani Chambers
- David Matranga
- Devin Rochford
- Emily Frongillo - Biting Battery Pack (ep7), Additional Voices
- Gianni Matragrano
- Howard Wang
- Ian Sinclair - Rocket Turtle (ep4), Additional Voices
- Jād Saxton
- Jason Marnocha - Killer Clown (ep1), Additional Voices
- Jim Foronda
- Jonathan McInnis
- Justice Washington
- Kamran Nikhad
- Kent Williams
- Kieran Flitton
- Kira Buckland
- Kyle Igneczi
- Laurie Jackson
- Marc Swint
- Marissa Lenti
- Mark Allen Jr.
- Matt Corcoran
- Meli Grant - Sand Dragon, Waker
- Michael Sorich
- Michelle Marie - Eggplant Seal, Additional Voices
- Mike Pollock - Minister (ep1), Additional Voices
- Natalie Van Sistine
- Nicholas Andrew Louie
- Patrick Morphy
- Reagan Murdock
- Ricco Fajardo
- Sarah Wiedenheft
- Stacy Morphy
- Steven Kelly - Kisho
- Suzie Yeung
