Giselle is a 14 year old Gallaxharian with fair skin, brown hair, blue eyes and cheeks. She wears a light green tight zentai suit, pale green wristbands with a green heart on both, sleeveless green knee-length dress with a pale green heart, pale green cap sleeves and a pale green belt with a bright green heart in it and green boots with a green heart on both. Her magic powers has green hearts in it. She is the friends and her signature color is green.
In the movie, Giselle is very determined, smart, beautiful, lovely, cheerful, friendly, sunny, and bright and is the leader of the Galactic Girls, and she is the eldest of the friends. She also has a crush on Gene.