Mask De Masculine, a Quincy within the Wandenreich’s Sternritter, holds the title “S: The Superstar.” His towering 200 cm frame, muscular build, and flamboyant luchador mask—adorned with a star on the forehead, exposing his cleft chin and nose—command attention. Clad in the standard Sternritter uniform, he accents it with red gloves, boots, and a wrestler’s championship belt bearing the Wandenreich insignia. Blonde hair, a matching mustache, and brown eyes complete his striking visage. A theatrical self-styled hero, Mask radiates zealous confidence, branding foes as villains and striking wrestling poses mid-battle. Though his bravado often borders on naivety, he adapts strategically, as when shattering his eardrums to negate sonic illusions. His strength surges through cheers from James, his devoted assistant, whose fervent support heals injuries and fuels power boosts. Yet Mask callously disregards James’s safety, revealing a ruthless core beneath his performative heroism. During the Wandenreich’s initial Soul Society invasion, he scoffs at Renji Abarai and Byakuya Kuchiki, dismissing non-captains’ Bankai prowess. In the second assault, he crushes lieutenants Ikkaku, Yumichika, and Shūhei before overpowering captains Kensei and Rōjūrō by exploiting weaknesses amplified by James’s chants. Facing Renji again, Mask’s repeated invocations resurrect James, triggering successive power escalations that unlock his Quincy: Vollständig—a winged form enhancing energy projection. Renji’s evolved Bankai, Sōō Zabimaru, ultimately obliterates him. “The Superstar” channels fan adoration into physical augmentation and regeneration. Combat techniques blend brute force with spectacle: energy beams (Star Flash) erupt from his mask, while wrestling-inspired strikes like the Star Eagle Kick pummel foes. The Sanrei Belt enables Vollständig, though his true weakness lies in his symbiotic bond with James—the actual Sternritter, with Mask serving as a manifestation of James’s power. Post-defeat, Mask disintegrates, and Yhwach absorbs James’s essence, underscoring their intertwined existence—a narrative thread weaving reliance on external validation into the fabric of Mask’s identity.