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, 2020 to December 22, 2020. Funimation Entertainment is producing an English dub of the series, 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
- Elizabeth Maxwell - Queen Nemlis/Female Narrator
- Gianni Matragrano - Minotaur
- J. Michael Tatum - Great Red Siberian
- Jason Marnocha - Fire Venom Dragon
- Jim Foronda - Frankenzombie
- Kevin Thelwell - Poseidon
- Michele Knotz - Neo Alraune
- Mike Haimoto - Demon Cleric Leonard
- Morgan Lauré - Harpy
- Nicholas Andrew Louie - Dawner the Hero
- Ricco Fajardo - Castle Grunt Goblin
Minor Cast
- Aimee Smith - Teddy Demons
- Amber Lee Connors - Teddy Demons
- Andy Barnett - Elder (ep1)
- Anthony Sardinha - Scaly Reindeer (Ep1)
- Brendan Blaber - Gummy (ep1), Jester Soldier (ep3), Rotten Zombies, Two-Headed Dragon
- Brent Mukai - Rotten Zombies
- Bryce Papenbrook - Ghost Shroud
- Cedric Williams - Baddie Diamond (ep1)
- Christopher Guerrero - Tire Genie (ep4)
- Dani Chambers - Glow O' Wisp
- David Matranga - Rotten Zombies
- Howard Wang - Bigwig Penguin
- Ian Sinclair - Evil Tree Spirit (ep5), Ice Golem, Rocket Turtle (ep4)
- Jason Marnocha - Killer Clown (ep1)
- Justice Washington - Demi Polar Bear (ep4)
- Kamran Nikhad - Item Storage Guard
- Kent Williams - Rotten Zombies
- Kyle Igneczi - Scissors Sorcerer
- Marissa Lenti - Stamp Cat (ep2), Teddy Demons
- Mark Allen Jr. - Killer Snowman (ep4)
- Meli Grant - Sand Dragon, Waker
- Michael Sorich - Forest Elder (ep2), Rotten Zombies
- Michelle Marie - Eggplant Seal, Teddy Demons
- Mike Pollock - Minister (ep1), Monster Shroud
- Reagan Murdock - Red Siberian (ep6)
- Sarah Wiedenheft - Killer Rhino Beetle (ep2), Teddy Demons
- Steven Kelly - Kisho
- Suzie Yeung - Alazif, Teddy Demons