serenity born from a fallen angel Selene who fell in love with the human who she's supposed to be his guardian angel. she was cast out of grace and realised too late a angel got no business in being with a human she left him and got used to being on earth but found out she was pregnant she kept her baby and named her serenity

Athanasia is the fairy of life and death.she is Stella half sister. she had been born years before Stella mother Luna married king radius. she's Luna illigitimate daughter who disappeared years ago and now has just return.she had been born with white hair that symbolize the part life and pitch black hallow with slightly violet eyes that symbolize death.this story takes place during season 3.she's been bought over by valtor who wanted something to destroy the Winx and help him complete his plans .Athanasia has grudges on her mother no one knows about Athanasia existence as it been cleaned up.Athanasia had a twin brother but he died from circumstances.