Asguiaro Ebern is a male Arrancar affiliated with the Wandenreich, serving directly under Yhwach. He possesses a tall, slender frame with short red hair swept into peaked formations on both sides of his head. A fragment of his Hollow mask obscures his left eye, perforated by three distinct holes, while his right eyebrow angles sharply upward. His attire includes a long white double-breasted trench coat adorned with shoulder straps, cinched by a black belt featuring an ornate buckle, layered over white trousers and trench boots. Ebern exhibits pronounced arrogance and stubbornness, openly mocking Ichigo Kurosaki’s capabilities during their encounter and defiantly refusing to leave Ichigo’s bed. He sustains a volatile rivalry with fellow Arrancar Luders Friegen, marked by frequent clashes. Despite this pride, Ebern demonstrates unwavering subservience to Yhwach, renouncing his Hollow and Arrancar heritage to pledge allegiance to the Quincy empire while harboring profound dread of his leader. His narrative initiates with a sudden intrusion into Ichigo Kurosaki’s bedroom, where he announces himself before being violently expelled through a window. In combat, Ebern vehemently denies his Arrancar nature, proclaiming himself a Quincy. He conjures a crescent-shaped spirit weapon armed with four cannons using his Quincy cross, taunts Ichigo into activating Bankai, and attempts to steal it via a Wandenreich medallion. Reciting the incantation—"Aufreide. Meer eh wolken, wolken eh regen, regen eh nebel. Sieht balle eh um sieht ballen. Wir gut freude, Danach Vrund Dill Becher. Los!!!"—he partially immobilizes Ichigo. Ichigo ruptures the binding, strikes Ebern with Getsuga Tenshō, and moves to apprehend him. Ebern evades capture through shadow-based teleportation, proclaiming the ability exclusive to the "chosen ones." Upon returning to Silbern, Ebern reports to Yhwach and verbally clashes with Luders Friegen. Yhwach intervenes, severing Luders’ arm before later executing him for insubordination. Yhwach acknowledges Ebern’s success in delaying Ichigo but declares his purpose fulfilled. Yhwach then decapitates Ebern, identifying him as a "foundation of peace." Ebern’s abilities hybridize Arrancar and Quincy traits. He employs a Quincy cross to forge spirit weapons, notably his Reishi cannons. His Arrancar physiology grants Hierro for augmented durability, enabling him to withstand Ichigo’s Bankai-enhanced Getsuga Tenshō despite grave injuries. He utilizes Sonído for high-speed movement and absorbs ambient Reishi. His Quincy medallion necessitates an extended incantation for activation—a limitation absent in pure Quincy—and deactivates if the target breaks free swiftly. He also accesses the Wandenreich’s shadow teleportation. No concrete information exists regarding his background, development in spin-offs, or appearances in movies or OVAs.