Born in a different universe on Earth-1365. Black swan. Real name Yabbat Ummon Tarru. is a cold, pragmatic, and fanatically devoted woman from A Hidden City on Earth-1365 before her home world was destroyed. Who has the ability of Optic Blasts from her eyes that are strong enough to hurt Captain marvel, Superhuman Strength, Telepathy, Flight, Force Fields, Genius intelligence, and Holograms. Yabbat was born a princess into the royal family of the Hidden City on Earth-1365, alongside her older brother, Dadingra. Dadingra was entrusted with a special key to the Library of Worlds—a pocket dimension and interdimensional hub created by the Beyonders. When Yabbat was four years old, a reality incursion caused her home universe to collide with another. The hive-mind Black Priests descended on her world and massacred her entire family. Yabbat fled to the Library of Worlds just as her world was destroyed, making her the sole survivor of Earth-1365. Inside the library, she was taken in by a group of female multiversal travelers known as the Black Swans (or Great Ladies). They raised and trained her as one of their own, dedicating their lives to a mysterious deity/prophet named Rabum Alal The Black Swans traveled across the multiverse to destroy the "Molecule Man" of various realities in a failed attempt to stop the collapse of existence. It was later revealed that Rabum Alal was actually Doctor Doom, who had assumed the identity after realizing the multiverse was dying and orchestrating a massive contingency plan. Yabbat eventually crossed paths with Earth-616's Illuminati, served in Thanos's Black Order, and joined Namor's Cabal as worlds collided toward Secret Wars. Black Swan can speak at least High Sumerian and English. While in captivity, she also began learning Latin. She later displayed knowledge of Swedish. She is a member of the black swans (Aka the great ladies). A collective of female multiversal travelers and priestesses from various destroyed realities who operate out of the Library of Worlds. While individual names for all of them are largely unnamed in-universe aside from Yabbat, they function as a sisterhood dedicated to Doctor Doom's mission of tracking and eliminating Molecule Men across the multiverse. And their leader Doctor Doom (Rabum Alal). Black Swan is a young, mature adult woman. 5 feet 11 inches tall and Weighs 145 lbs (65 kg). And has Long, straight, flowing Black hair, typically kept open or parted neatly. With Black Eyes (her eyes turn glowing red when she uses her powers or detects a multiversal incursion). and Chalk-white/Pale skin/complexion. Lean, athletic, and statuesque body type. And speaks in a cold, haughty, calculated, and ominous tone. Black swan wears a minimalist, black strapless bandeau or bra-style top with structured cups that form a slight sweetheart neckline. High-waisted, glossy black leggings or trousers that feature integrated tactical hardware. Heavy, circular metallic holsters or mechanical tech hubs are strapped securely around her right thigh and left hip area. Separate, long opera-length black arm sleeves that extend past her elbows. They cover her forearms with sectional paneling and end in fingerless gauntlets or hand wraps. dramatic black fabric tendrils or cape like banners trail from the backs of her gloves, extending out and downwards to frame her silhouette. And has black eyeliner and black lipstick. She also has Antimatter Injection System, and Incursion Detection Device which lets her possess a device in her eyes allowing her to detect an incoming reality incursion before it happens. Before it was destroyed she lived on Earth-1365. On her earth the planet's sun had been swallowed by a cosmic anomaly, leaving the entire world plunged into eternal night and severe climate disruption. A royal settlement where the local civilization lived, ruled by a royal family that included Princess Yabbat Ummon Tarru (Black Swan) and her older brother, Crown Prince Dadingra. Located directly inside the Hidden City was a mystical gateway leading into the Library of Worlds, a pocket dimension and multiversal nexus sitting on a separate cosmic axis. An artifact allegedly gifted to the royal family by the Ivory Kings (Sinnu Sarrum) which gave them access to the door of the Library. When Earth-1365 suffered an incursion (a fatal collision with a parallel universe), the hive-mind Black Priests descended upon the planet and massacred its inhabitants to try and stop the collision. The entire world was destroyed.