She has blue hair, blue eyes and blue eyelashes. She has pale blue skin and a pink shell on her forehead. She wears a blue and pink shell shaped top and has a blue tail. She has a pink ribbon on her tail and on her right arm.
She is first seen in Sirenix, when Bloom asks her about a riddle. She tells her exactly what the riddle tells, without a meaning. Bloom figures it out and she tells that they have to go to the place were they started. Then, she is seen with the other guardians to give the power of Sirenix to the Winx.
Bloom's Guardian of Sirenix is seen in Inspiration of Sirenix along with the other guardians, helping the Winx help Daphne restore her confidence to fight the Beast of the Depths. After discussing how to help Daphne with the other Guardians, she tells the Winx they must find the Inspiration of Sirenix.