Naegino Sora
Sora´s parents took her to Kaleido Stage, when she was young. Although they died shortly thereafter, and Sora went to live with her aunt and uncle, Sora is inspired by this childhood memory to become a member of the Stage when she reaches adulthood. With her aunt and uncle's hesitant approval she travels to the United States to audition.
Layla Hamilton
Layla is an accomplished and seasoned performer. Layla is the daughter of Mr. Hamilton, a wealthy hotel chain owner. She loves the Kaleido Stage because she clearly remembers how her deceased mother enjoyed going there.
Fool
Fool is the mysterious spirit of the stage. He is about the size of an action figure, and appears as a type of jester or clown. Fool is invisible to everyone but those who are destined to do great things on the stage and/or whose heart is completely dedicated to the stage. He seems to be the spirit of a true jester who once was devoted to a princess who never smiled.
Wong May
May is an ex ice skater and new recruit who challenges Sora's position. May turns out to be exceptionally talented and becomes Leon's partner for the Dracula show. She is alos self confident and arrogant at times.
Leon Oswald
Leon is a very famous trapeze performer. He comes off as arrogant, refusing to perform with Sora because she is not skilled enough for him. His true desire, however, lies in a promise he made to his dying sister Sophie: to see the Angel's Act, an unrivaled and beautiful trapeze act they had developed, completed. He is a rival of Yuri Killian, whom he blames for the death of Sophie in an accident.