This is the list of the voice actor at the Castle Series. It's all revealed here: Click here!
- Ryan McCormack (Also known as Frogs) as Etrius
- Dave McElfatrick as Beecher
- Robert Denbleyker as Lloyd & The General
- Harry Calverley (Also Known as Tawl) as Boomer
- Oscar Johannson as Dr. Romanov
- Various Castle Series Maker Staff as Soldiers
- Aleksander Vinter as Evolved Creatures and Common Creatures