Saber Alter, also known as Artoria Alter, is the corrupted, dark side of Artoria Pendragon, the legendary King Arthur. Her appearance reflects the taint of darkness within her. She retains the elegant features of her original form—piercing golden eyes and pale-blonde hair, styled in her signature braid—but her eyes now carry a fierce, icy gaze, glowing with an unsettling intensity. Her once shining silver armor has become blackened, with intricate crimson and dark silver markings etched across the surface, exuding a menacing aura. She wields her blade, Excalibur Morgan, a corrupted version of her holy sword Excalibur. Its sinister red glow radiates a foreboding power, emphasizing her transformation from a noble king to a merciless, dark warrior. Saber Alter’s entire demeanor reflects this change, projecting an aura of silent, unapproachable authority that holds an unsettling gravity.