* Ellie: The protagonist, a young girl who discovers she can fly. She's kind, curious, and determined.
* Grandpa: Ellie's grandfather, who is wise and supportive of Ellie's unique abilities.
* Grandma: Ellie's grandmother, who is initially apprehensive about Ellie's flying but ultimately becomes a source of love and strength.
* Mr. Jones: Ellie's neighbor, a grumpy and suspicious man who doesn't believe in Ellie's powers.
* The Other Children: A group of children who are initially skeptical of Ellie's powers but eventually come to admire her.
There are also some secondary characters, such as Ellie's parents, who play smaller roles in the story.