Queen Gemma is a character who appears in the Disney Junior animated series, Miles from Tomorrowland. She is the sovereign ruler of the planet Dethalia, and the mother of Prince Rygan.
As a Dethalian, Queen Gemma lives up to her people's pre-eminent reputation. She is a strictly serious and mighty queen, and is not the kind of person who jokes around. Despite being strict, Queen Gemma has been known to show a friendly side of herself.