Whit Allgood: The protagonist, a young wizard who is also the seventh son of a seventh son, and has special powers
Wisty Allgood: Whit's sister, a strong and independent witch
Jonesy: Whit's best friend, a boy whose family has been cursed by the witch Malificient
Aunt Lily: Whit and Wisty's aunt, a powerful witch
Uncle Ned: Whit and Wisty's uncle, a kind and gentle wizard
Miss Edwards: The Allgood children's strict but fair-minded teacher
Malificient: An evil witch who is the main antagonist of the series
Grimalkin: Malificient's cat and familiar, who is also evil
Mr. Monday: A mysterious man who may be an ally of the Allgood children or a threat to them
Dr. Dee: A scientist who is experimenting on witches and wizards