Cal'syee Neramani, called Deathbird -- enemy of all Shi'ar, traitorous sister to Majestor D'ken -- was a cruel usurper who valued noting above her own ambitions. If there was warmth or beauty within her, it was buried beneath an arsenal of cold razors and ugly jealousies. 
History
Deathbird's history is presumably similar to her Earth-616 counterpart's. She attempted to usurp the throne of the Shi'ar Empire from her brother D'ken, but her plan was thwarted by the Imperial Guard.[1] What became of her afterward is unrevealed.