Princess Holly Thistle is the main protagonist in the series alongside Ben Elf, who is her best friend. She is princess of the Little Kingdom and likes to use magic despite the risk of things going wrong.
She resides in the Little Castle with her parents and younger sisters.
She wears a pink dress, pink shoes, has blonde hair, violet eyes and a small crown. She carries a pink wand.
She has two parents; King and Queen Thistle, who both care for everyone and take the role of the King and Queen of the Little Kingdom.
She has two younger twin sisters named Daisy and Poppy. They are both very mischievous when their wands and magic are involved between them. The only time when they behave properly is when their mother, Queen Thistle is around, who has the capability of confiscating their wands from them.
She has a best friend, who is Ben Elf. He is an elf of the same age as her. He is sometimes unsure about fairy magic but encourages Holly to use magic, especially in urgent and desperate situations.
Nanny Plum is the Little Castle's maid. She is very close to Holly as she is known to be her 'babysitter'. She always has the enthusiasm of using magic spells, and doesn't really have a clue about how magic can always lead to wrong results. She is caring to other people, especially Holly, but can be fairly strict during appropriate times.