Deathbird was born Cal'syee Neramani to the ruling house of the Shi'ar Imperium on the Aerie (now known as Chandilar), native world of the Shi'ar. Her name was stripped from her after it was
prophesied that she was destined to commit great evil. She was exiled after murdering her mother and an unnamed sister. During this exile, Deathbird travels to Earth and becomes an associate of
MODOK and
Advanced Idea Mechanics. Following AIM's orders, she battles
Carol Danvers in New York. The skirmish is interrupted after Deathbird severely injures Carol, who had been distracted trying to save the lives of two small children. The X-Men defeat Deathbird and her allies, but are infected by the Brood. They are ultimately cured thanks to the efforts of Ms. Marvel and the
Acanti Soulsinger. Deathbird later succeeds in deposing Lilandra with the aid of the Brood and takes the throne for herself. Some time later,
War Skrulls impersonating
Professor X and the
Starjammers aid Lilandra in deposing Deathbird and restoring her to the throne. Deathbird allows Lilandra to take the throne, having grown bored of the bureaucracy. Deathbird is granted dominion over the conquered
Kree empire as
viceroy, and also made praetor (leader) of the Kree
Starforce.
Romance with Bishop When the Shi'ar ask for the X-Men's help against the invading
Phalanx, who had already reached their throne-world Chandilar, the X-Men ally with Deathbird. They manage to fend off a Phalanx assault on the Shi'ar, and during the conflict, Deathbird and the X-Man
Bishop forge a warrior's respect for each other. Deathbird is amazed that Bishop shows no fear and stands up to her, and they also seem attracted to each other. Eventually, the two become romantically involved. Bishop and Deathbird are accidentally transported to an alternate future Earth ruled by Alanna, the daughter of Lilandra and
Charles Xavier. Bishop and Deathbird help the rebels in opposing Alanna, ultimately defeating her in a duel. Deathbird has the chance to kill Alanna, but allows her to live. The heroes of the liberated Earth help Bishop and Deathbird return to their own time.
Betrayal and theorized heritage and
Art Thibert. Eventually, Bishop and Deathbird return to the Solar System and encounter the inert planetary mass of the
Living Monolith on their way to Terra Firma. Curious, the two land their craft and investigate. Suddenly, Deathbird betrays Bishop to a cadre of Skrulls and he is returned to Earth to implement the plans of
Apocalypse. Deathbird is herself betrayed and transformed by Apocalypse into one of the
Horsemen of Apocalypse. After Apocalypse is defeated, Deathbird and the Horsemen scatter. Sometime later, a globetrotting X-Men team led by Storm exile themselves from their home and teammates to find
Destiny's thirteen diaries since none like the idea of having their destinies defined. This team recruits new members
Heather Cameron and her brother
Davis. During a mission to infiltrate the ship of the intergalactic warlord Khan, Heather's appearance changes to resemble the Shi'ar, and it is theorized that she and Davis have Shi'ar heritage.
Jean Grey notes that Heather's cranial markings and feathered crest indicate that she is descended from the royal Shi'ar. It is implied that Deathbird may be Heather's mother.
The Rise and Fall of the Shi'ar Empire During his quest for vengeance against the Shi'ar,
Vulcan is captured and held in the same prison as Deathbird. Vulcan is released by a member of a secret order that wishes D'Ken to lead the Shi'ar once more; Vulcan releases Deathbird. Vulcan is enthralled by Deathbird, and they become romantically involved. He promises to put his quest for vengeance on hold. Deathbird convinces Vulcan to finish the healing process that the Shi'ar members of the secret order had begun on D'Ken, who remained in a coma since the
M'Kraan Crystal incident. When D'Ken discerns Vulcan's feelings for Deathbird, he invokes an ancient Shi'ar custom and invites Vulcan to marry Deathbird. During Vulcan and Deathbird's wedding, the X-Men, Lilandra, the Starjammers, and the Shi'ar loyal to Lilandra attack. During the chaos that ensues, Vulcan kills D'Ken and becomes the emperor of the Shi'ar, with Deathbird as his empress. ==Powers and abilities==