Deathbird

Cal'syee Neramani is a Shi'ar mutant who was born with avian features including a full set of wings. The eldest child of the royal house of the Shi'ar Empire, Cal'syee's name and title were stripped from her after she murdered her mother and sister in a fit of rage. Exiled from the Shi'ar, Cal'syee took the name Deathbird and plotted her return to power. However, her sister Lilandra had assumed the role of Majestrix of the Shi'ar, leading to an intense rivalry between the two women.[10] While trapped on Earth, Deathbird initially battled the superhero Ms Marvel.[11][12] However, after allying with the alien Brood, Deathbird returned to Chandilar and usurped the throne from her sister.[13] Her rule was short-lived, as Lilandra quickly returned to take back the throne from Deathbird.[14] Over the years, Deathbird frequently fought the X-Men, who often assisted Lilandra in defending her empire. However, after several years of animosity, Deathbird reluctantly agreed to serve as advisor to the daughter of the late Lilandra, Empress Xandra.[5] She now stands as an uneasy ally to the X-Men, with her priorities first and foremost to defend Xandra from harm.[15]